2012年10月25日星期四
Electric Hub Motor | E-Bike Conversion Kit™: Electric hub motor and brushless dc controller inf...
Electric Hub Motor | E-Bike Conversion Kit™: Electric hub motor and brushless dc controller inf...: Q: We are interested in using your bike conversion kit in this project, however, due to specific project requests, we have the following q...
Electric hub motor and brushless dc controller information
Q: We are interested in using your bike conversion kit in this project, however, due to specific project requests, we have the following questions.
First question: Do you have any brushless DC controller which allows hub motor rotation inversion?
Second question: Could you send us some documentation containing information about the brushless DC controller for the 48V/1000W bike conversion kit ? (i.e. pin description)
Third question: We have found two hub motor models over 1000W of output power (BLW-16B and BLW-20B) in your leaf motor website. However, in the performance datasheet of the BLW-16B, the maximum output power mentioned is 1037.32W. Is there any motor with output power of 2000W (we need to reach 60 Km/h)? Do you have a different brushless DC controller for these electric bike motors?
Fourth question: We would like to use your LCD in our project. Is the LCD independent of the brushless DC controller? What are the inputs necessary to the LCD to display the information (speed, voltage, mileage etc.)?
A: We have 24V 250w, 36V 250w.36v 750w‚ and 48V 1000w LCD controllers to drive our brushless electric bike motors.
If you need 48v 1000w motor for e-bike. Generally, choice HBL motor.
That BLW-16B and BLW-20B are used for e-motorcycle, e-tricycle.
The power can reach 2000W, Speed:>60km/h
The performance data you saw show Max 1037.32W.Because we test this BLW-16B through 48V 25A 9-MOSFET controller.
This hub motor had better to use 48V 15 MOSFET or 18 MOSFET controller to test.
Now we have 48V 15MOSFET BLDC motor controller to drive this hub motor, but no led.
BLW-16B and BLW-20B are the same hub motor, the difference between them is casted hub.
BLW-16B is 10 inch casted hub and uses 16 - 4.00 inch tire..
BLW-20B is 12 inch casted hub and uses 20 - 4.00 inch tire.
Our LCD must work with our BLDC controller, don't input anything. There is a signal wire to test speed. Just set the size of wheel.
When electric bike kit system works, LCD will display speed, battery gauge, mileage..
Q: Probably we are going to use the BLW-20B hub motor. We are designing an e-tricycle which should allow the driver to move back and forward. It means that we need a BLDC controller which allows the motor to rotate in two directions. Do you have a controller like this? In case you do not have, we are interested in using your LCD to a different controller (we have already found a controller that allows two direction rotation). Is that possible?
A: We have 48V 15-MOSFET brushless controller that can forward and reverse (two direction rotation),but No LCD now.
Now 48V 12-MOSFET can work with LCD, but it's hard to drive this BLW-20B when power more than 1000w hub motor.
Now few customers order this 48V 15MOSFET controller for bike conversion kit.
2012年9月23日星期日
2012年9月15日星期六
New 20 inch 48V 1000W front hub motor electric bike conversion kit
https://www.leafbike.com/
The conversion kit combines the full E-bike technology: direct drive Brushless Gearless high torque hub Motor to change almost every bicycle into a personal electric bike. Save energy, protect environment and save money with a lot of fun.
Main Features:
Rim : 20" Alloy ( tire : 20 × 1.5 “ , 20 × 1.75" , 20 × 1.95" )
Hub motor: brushless gearless dc motor
Controller: LCD display
Speed: 20.5 miles / hour
Mechanical brake: Disk-brake / V-brake
Install: spacing of 100mm fork
Package Content:
1 x 20" New 48V 1000W front hub motor wheel No tire
1 x 48V 1000W 12-MOSFET motor controller
1 x LCD ( display speed, mileage, battery gauge.. )
1 x Twist throttle No battery gauge
1 x Brake lever
1 x Three button switches
Net weight: 10.5Kg / 23 lbs
Package Size: 52cm L x 22cm W x 51cm H / 20.5" L x 8.7" W x 20" H
Package Type: Cardboard Box
20 inch 48V 52V 1000W hub motor electric bike kit - front wheel
The conversion kit combines the full E-bike technology: direct drive Brushless Gearless high torque hub Motor to change almost every bicycle into a personal electric bike. Save energy, protect environment and save money with a lot of fun.
Main Features:
Rim : 20" Alloy ( tire : 20 × 1.5 “ , 20 × 1.75" , 20 × 1.95" )
Hub motor: brushless gearless dc motor
Controller: LCD display
Speed: 20.5 miles / hour
Mechanical brake: Disk-brake / V-brake
Install: spacing of 100mm fork
Package Content:
1 x 20" New 48V 1000W front hub motor wheel No tire
1 x 48V 1000W 12-MOSFET motor controller
1 x LCD ( display speed, mileage, battery gauge.. )
1 x Twist throttle No battery gauge
1 x Brake lever
1 x Three button switches
Net weight: 10.5Kg / 23 lbs
Package Size: 52cm L x 22cm W x 51cm H / 20.5" L x 8.7" W x 20" H
Package Type: Cardboard Box
20 inch 48V 52V 1000W hub motor electric bike kit - front wheel
2012年8月31日星期五
Electric Hub Motor | E-Bike Conversion Kit™: How to connect wires with leaf 1000W hub motor ele...
Electric Hub Motor | E-Bike Conversion Kit™: How to connect wires with leaf 1000W hub motor ele...: I have wired up some items to my bike, but I am unsure how to wire certain things up. Please view the pictures to see what I mean: Attachme...
How to connect wires with leaf 1000W hub motor electric bike conversion kit
I have wired up some items to my bike, but I am unsure how to wire certain things up.
Please view the pictures to see what I mean: Attachment called - Controller Wires - Which color to which color of the hub motor do I connect to ?
There are three thick wires on the BLDC Motor Controller that look like connectors to they connect to the motor. Unfortunately, I do not know what color to map them to. I did connect blue to blue and green to green, but the wheel responded briefly, then the LCD screen shut off.. I would have to switch the power off and on again for it to come back. I have not gone any further
as it gave me the impression I could do some damage if I continued.
Attachment called - Bike Motor - Which colors connect to the colored wires of the brushless hub motor Controller
This is the connectors on the hub I need you to identify for the Controller, which wire connects to what? Connecting the green to green, black to black, there is another yellowish/greenish wire on the motor that has no equivalent colored wire on the controller. The controller has a black think wire - does this yellow/green wire connect to the black?
Attachment called - Light Switch & wire
I do not know what this is and what it is used for - I presume a light to work from the battery. Where do I wire this to? Does it connect to the BLDC motor controller? if so, where.
I found your video's quite difficult to follow as it is difficult to work out what is connected to what and how and I do not see anyone triggering anything to start the electric bike motor wheel when it starts working.
Would you be able to send me some diagrams or written instructions on setting this up from scratch?
See attachment ‘BLDC Motor Controller Wires’: The green and blue wires are present on your diagram, but the thick black one isn’t – where is it supposed to go?
The other attachment ‘Motor Wires’: There is a Dark green wire, Dark Blue wire and a Yellowish Wire (I say yellowish as it seems to have a hint of green in it – in other words it is not too clear).. The green and blue I can match to the green and blue on the brushless hub motor controller, but what about the Yellow/green wire?
I have attached these wires in various combinations, with the power coming on and empowering everything other than the wheel. The electric bike motor wheel will ‘shudder’ when I slightly twist the throttle but the whole thing will shutdown and I will have to turn off and on again to get it back. I did this a few times with the same result. I rearranged the wires again, with all items turning on, but the bike motor wheel did not respond. I eventually realised the controller wire heating up and turned everything off. I have left it for a while, but when I tried it again the power did not come on any device.
2012年8月17日星期五
2012年8月15日星期三
2012年8月13日星期一
2012年8月2日星期四
2012年7月29日星期日
2012年7月24日星期二
20 inch hub motor conversion kit for electric bike
Q: I have looked at your leaf motor and want to buy one bike kit includes hub motor wheel, BLDC motor controller and twist grip throttle. I am looking at a 20 inch wheel with 1000 Watt hub motor, but I think that one may not be enough to handle the load. I am looking to build a three wheeled vehicle and look at the possibility that I may need to power
2 or all 3 of the BLDC hub motor wheels to achieve my goals. I am thinking of building two or three of these three wheeled vehicles. What can you do to help?
A: Thanks for you are interested in electric bike conversion kit . For my personal idea, use a 20" 1000w brushless hub motor to convert a front wheel, front drive is much better. If possible, order two sets of 20" 1000w BLDC hub motors with one high power brushless motor controller to convert two rear wheels - rear drive. It’s no problem with forward and reverse. But when you turn left or turn right, you will get a little trouble. Only under much lower speed can turn left or right.
Convert two wheels that is enough. If you always ride on flat road, only convert one front wheel.
Q: I was thinking the 20 inch 1000 Watt bike conversion kit as exampled.
What I had vision was to use 3 BLDC motor controllers, but using one on front and one larger for the 2 rear hub motor wheels may make things easier.
For turning it is easy to not worry about differential control on the rear wheels, such as turn radius larger than 5 M differential on the rear wheels is not consequential as centerline width is app 720 mm.
It would be very easy to turn the inside wheel off by disconnect, or turn the rear drive off all together and let the front wheel do the deep turning.
So what I need is real pricing for three sets of bike conversion kits includes three BLDC hub motors, two BLDC motor controllers. One 1000 W for front, and the other 2000 W for the two rear hub motor, or what is possible to have one 3000 watt drive to run three brushless hub motors?
Please note that the vehicle will need a lot of power to traverse some of the steep ramps and terrain.
It seems that the 1000 W hub motor seems to have app 17 Nm torque and that would mean that three would have just enough torque to carry the load.
A: We suggest you order below bike conversion kits :
1.3 sets of 20" 48V 1000W hub motors (one for front, the other two for rear hub motor)
2.1 set of 48V 1000W LCD BLDC motor controller to drive front wheel, LCD display speed, battery gauge.
3.1 set of 48V 2000W brushless motor controller to drive two rear wheel
4.2 set of thumb throttle, one of left side to control front wheel, the other on right side to control right wheel(when turning, loose right side throttle, just twist left side thumb throttle)
5.1 set of brake lever to control three controller, when press lever, all of three controller will cut off power
6.1 set of three button switch used to control reverse, horn, lights
Hub motor, BLDC motor, bike kit, bike conversion kit supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
2012年6月25日星期一
12 inch BLDC hub motor for electric bike ?
I'm in need of a simple installation electric bike motor for a special application. The subject BLDC motor look that will perfect fit our needs.
I am ready to order the first to complete the prototype, but will appreciate your advice if will work properly under the following conditions:
1. Max torque 15 Kg-m
2. Speed 0 to 10 Km/ h
3. Distance between charge batteries 5 Km
Important is smooth start motion (no shaking)
I understand the HBL-12" 24V 250W hub motor is good for the working conditions
On your internet site for this size electric bike motor there is technical performance for the 36 V model only. I need only 5 Km range between battery charges.But very important is the star movement from stop (0 Km/h) very smooth, slowly start to move otherwise possible damage of the airplane nose wheel if start move quickly and shaking.
Then the question, will 36 V brushless hub motor be better than 24 V ?Since 36 V have smaller currents I have the feeling will perhaps be better starting to move more smooth and slowly...
Will be great the customized low speed.
But please note that this special application, not yet a commercial product, then in the last phase of development. Will you customize low speed electric bike motor at the present stage of just one unit ?
Looking all your products, the choice was your Model:HBL-12" 24V 250W hub motor because so simply installation. But also, although is not our preferred solution because much more complicated installation, could be your Stepper DLDC motor, which in this case the speed can be defined by the ratio of the gears, and the diameter of the wheel (which in our case is important to be small since the device shall be below the airplane... Max 12 inches but smaller is better...)
Maybe the Stepper DLDC motor have the advantage of very smooth start motion ? It is our concern to have a very slow and smooth start motion...
Actually from your specifications you give for the max torque of 16000 (the point we are most interested) 243 rpm at 18 Amps, which is for a 12 inch wheel about 14 Km/h, then is very near our 10 Km/h.
We believe, if we do not read wrong your performance data for the 36 V HBL 12 inch electric bike motor as it is specified is OK...
Please correct me if wrong. The fact that the motor will be capable of much high speed we believe should be not a trouble, we can easily put a limitation of the speed.
Still extremely important is the smooth and slow increase speed from 0 Km/h (stop) with no shacking,but we understand this is related to the BLDC motor controller, which we will test but feel should be not a problem.
We need as precise as possible to control smoothly the speed from stop 0Km/h to max 10 to 15 Km/h... with slow increasing speed and keep low speed 2 to 5 Km/h .Then NOT AT ALL "on" and "off" !
Another important issue is the torque. We need minimum 15 Kg-m torque, better if 20 Kg-m... ( 147 to 196 Newton meter)- Here is a big doubt with the numbers on your performance data since indicated mN.m 16000.0 ? if lower figures could be difficult start motion when in surfaces as grass.
Then I need to order not only the hub motor but also the relevant BLDC motor controller and electric bike battery. When you say 36 Volts make no difference but preferred in Europe. I choice 36 Volts... as you say... but if 24 Volts is better, off course we change to 24 Volts... we need the better solution.
Normally the device speed shall be about 5 to 8 Km/h... for safety reasons... and torque between 147 to 196 Newton meter at 0 Km/h to start motion.
Hub motor, BLDC motor, bike motor, electric bike motor supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com/
2012年6月17日星期日
2000w electric bike hub motor kit for e-motorcycle
2000w electric bike hub motor kit for e-motorcycle
Q: I am going to build an electric motorcycle prototype in Russia , I am looking for electric bike kit parts with bike motor and lithium battery.
A: How many motorcycle motors would you like? If just need 1-2 sets of hub motor sample. The shipping fee to Russia by air or express is too expensive.
Q: I first need one set of hub motor kit for test. It’s okay for the shipping price. I also can arrange the shipping. I need bike motor controller. What’s the top speed of 20 inch 48V 2000W hub motor and 24 – MOSFET bike motor controller? What’s the peak watts for this hub motor? What’s the peak ampere current for this 24 – MOSFET bike motor controller? What’s the FOB price for 200 sets of bike kit (hub motor & bike motor controller)? What’s the warranty time?
A: 20" 2000w bike kit (48V 2000W hub motor with 24-MOSFET bike motor controller)
1. Top speed:70km/h
2. Peak watts for this hub motor:2500W (Work at 48V,bike motor controller is limited current:60A)
3. This 24-MOSFET bike motor controller, peak ampere:60A
4. $380USD/set (ONLY this hub motor with 4.00-12" tire and controller) FOB Shanghai.
5. ONE Year warranty.
The price for 1 set of sample (hub motor & bike motor controller) is 693USD, not including shipping fee. About hub motor performance and bike motor controller, we can customize as your order.
Q: Could you make custom this hub motor and bike motor controller peak current 100a-120a? Is the wheel of this hub motor is 20 inch? What is the hub motor speed on 1000W?
A: Customize 120a bike motor controller is okay. But it cost more. After install 4.00-12” tire, the diameter of hub motor tire is 51cm. That’s 20 inch wheel. Hub motor speed is about 58km/h on 1000w. After packing this bike kit ( hub motor + bike motor controller + throttle + brake lever + switch ) is 18.7kgs.
Q: This hub motor on 2000W: the 2000w is the continuous watts power? What’s the peak watts power for this hub motor? Could this hub motor be installed 180mm disc brake?
A: Peak watts for this hub motor: 2500W (Work at 48V, bike motor controller is limited current:60A)If work at 48V 100A bike motor controller, it can reach max 3000W. This hub motor can work at 48V-72V. We can make this hub motor with disc brake. But maybe only 200mm disc brake for this hub motor.
Hub motor, bike kit, bike motor supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
2012年6月10日星期日
issue about electric bike kit battery
We purchased an electric bike kit including motor controller, hub motor wheel, throttle, brake lever and with 36V 10AH bottle style Lithium Ion electric bike battery that used for testing 36V solar charger from one supplier, not from leaf motor. After charging this electric bike battery for 10 hours by better solar power, full charged, we rode the bike, but hub motor wheel only run about 8km. Then we use 110-230Ac charger to charge this electric bike battery and full charged it. After test, we found this hub motor wheel is still lasted for around 8km.
We use a ampere meter in series to electric bike kit system, powered on and rode it. We got the current is about 5A. The RPM is 257RM.We use 26” hub motor wheel.
We calculate the speed is about 32Km/per hour.
See below formula:
（3.14×26”×0.0254）× 257RPM × 60 minutes ÷ 1000 (m-Km)=32km
If this is 10Ah battery, per hour lost 8ah.We can use 1.25 hours.
See below formula:
10Ah ÷ 8ah/per hour= 1.25hours
We think full charge this electric bike battery per time, the hub motor wheel can run about max 40 km. 32km/per hour × 1.25 hours = 40 km
There is definitely a problem with this electric bike battery, I’m not sure whether electric bike kit is because of the solar charging or our testing, or if it has a fault. But I need a replacement electric bike battery asap, because we don’t have any more 36v electric bike battery, and we sold 1 set of electric bike kit with li battery last week. I think BMS inside this electric bike battery no problem. The problem comes from the li battery cells. Maybe this electric bike battery had stayed in warehouse for a long time and haven’t charged it. It will make the electric bike battery cut down the achieve distances and use life.
So if solve this problem and let my hub motor to work asap, only replace all cells or replace new electric bike battery.
We are angry with our supplier, sent them many emails and no any reply.
Thank you, leaf motor. Help us found the electric bike battery ‘s problem. We are going to order leaf’s products in near future.
Hub motor, electric bike battery, electric bike kit supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com/
2012年6月8日星期五
The hall sensor is a transducer that varies its output voltage in response to a magnetic field. Hall sensors are used for proximity switching, positioning, speed detection, and current sensing applications. Three phase BLDC motor has three hall sensors inside that are used for electric bike widely.
36V 250W brushless geared motor is popular in Europe, but in North America, people like 36V 750W hub motor more. More and more people order and enjoy these two types of DC hub motors that are called classic electric bike motors. Now they have received by most of customers because of good quality.
But when ride this hub motor bike and climb hill for a long time. Sometimes over current or over head will break motor controller's MOSFET or hall sensor.
Hall sensor is broken. The hub motor can't work. Unless your controller can drive sensor-less motor. Buy a new motor, cost more.
Replace hall sensor, cost less. Below we first instruct one type of 750w electric bike motor .
If hall sensor is broken, power on battery, you will find battery gauge works, horn works, lights work, everything is good, except when you turn your throttle, the hub motor wheel can't run.
Step 1:
Retest this hub motor and make sure it does be broken. Do you have voltmeter?
Still connect all wires and power on.
First measure 6-pin hall sensor plug, the voltage as below:
1.The voltage of red and black is about 4.5V;
2.The voltage of yellow and black is about 4.5V or 0V;(use hand to turn hub motor, the voltage will change from 0V-4.5V)
3.The voltage of green and black is about 4.5V or 0V;(use hand to turn hub motor, the voltage will change from 0V-4.5V)
4.The voltage of blue and black is about 0V or 4.5(use hand to turn hub motor, the voltage will change from 4.5V-0V)
If you can get above data it's no problem with bike conversion kit system. If the voltage of Item 2 (yellow and black wires)can't change from 0V-4.5V,Please replace this hall has a yellow wire connect.
You should prepare some tools and material:
1.Hexagon wrench (Necessary)
2.Hammer (Necessary)
3.Screwdriver
4.electric iron
5.A-B glue
6.insulated paper, insulated wire
7.scissors
8.New hall sensor
Step 2:
Take off nuts and gasket on axis and use hexagon wrench to loose 16 screws.
Step 3:
Make the electric bike motor stand and cable is bent inside. Left hand hold the hub motor and use hammer to knock the axis.
Step 4:
After some knock, the cover will take off hub.
Step 5:
Use the same way to knock the other axis, the other cover will also take off hub.
Step 6:
When both side covers are off hub, next we should take out the rotor-winding. Make the axis stands on the ground, both hands press hub motor, the rotor-winding will out of hub.
Step 7:
There are three hall sensor in three grooves around the rotor.
Use scissors to remove insulated wire and insulated paper. You will find 9-pin(three hall sensor)connect to PCB on rotor-winding. Each hall has three pin: 1:+ , 2:- ; 3:signal
For example:
Hall A: 1:+ , 2:- ; 3:Yellow wire
Hall B: 1:+ , 2:- ; 3:Blue wire
Hall C: 1:+ , 2:- ; 3:Green wire
Step 8:
Just now had known yellow wire hall sensor was broken. Please use electric iron to remove Hall A and use A-B glue to fix new hall sensor. Use insulated paper, insulated wire to fix PCB. Then re-build this hub motor.
Step 9:
Test as step 1.If can get the data from each hall sensor. Congratulate.
Power on battery, the hub motor wheel works.
Hub motor, BLDC motor, electric bike motor supplier: Leaf Motor Technology Co., Ltd
Website: https://www.leafmotor.com/
36V 250W brushless geared motor is popular in Europe, but in North America, people like 36V 750W hub motor more. More and more people order and enjoy these two types of DC hub motors that are called classic electric bike motors. Now they have received by most of customers because of good quality.
But when ride this hub motor bike and climb hill for a long time. Sometimes over current or over head will break motor controller's MOSFET or hall sensor.
Hall sensor is broken. The hub motor can't work. Unless your controller can drive sensor-less motor. Buy a new motor, cost more.
Replace hall sensor, cost less. Below we first instruct one type of 750w electric bike motor .
If hall sensor is broken, power on battery, you will find battery gauge works, horn works, lights work, everything is good, except when you turn your throttle, the hub motor wheel can't run.
Step 1:
Retest this hub motor and make sure it does be broken. Do you have voltmeter?
Still connect all wires and power on.
First measure 6-pin hall sensor plug, the voltage as below:
1.The voltage of red and black is about 4.5V;
2.The voltage of yellow and black is about 4.5V or 0V;(use hand to turn hub motor, the voltage will change from 0V-4.5V)
3.The voltage of green and black is about 4.5V or 0V;(use hand to turn hub motor, the voltage will change from 0V-4.5V)
4.The voltage of blue and black is about 0V or 4.5(use hand to turn hub motor, the voltage will change from 4.5V-0V)
If you can get above data it's no problem with bike conversion kit system. If the voltage of Item 2 (yellow and black wires)can't change from 0V-4.5V,Please replace this hall has a yellow wire connect.
You should prepare some tools and material:
1.Hexagon wrench (Necessary)
2.Hammer (Necessary)
3.Screwdriver
4.electric iron
5.A-B glue
6.insulated paper, insulated wire
7.scissors
8.New hall sensor
Step 2:
Take off nuts and gasket on axis and use hexagon wrench to loose 16 screws.
Step 3:
Make the electric bike motor stand and cable is bent inside. Left hand hold the hub motor and use hammer to knock the axis.
Step 4:
After some knock, the cover will take off hub.
Step 5:
Use the same way to knock the other axis, the other cover will also take off hub.
Step 6:
When both side covers are off hub, next we should take out the rotor-winding. Make the axis stands on the ground, both hands press hub motor, the rotor-winding will out of hub.
Step 7:
There are three hall sensor in three grooves around the rotor.
Use scissors to remove insulated wire and insulated paper. You will find 9-pin(three hall sensor)connect to PCB on rotor-winding. Each hall has three pin: 1:+ , 2:- ; 3:signal
For example:
Hall A: 1:+ , 2:- ; 3:Yellow wire
Hall B: 1:+ , 2:- ; 3:Blue wire
Hall C: 1:+ , 2:- ; 3:Green wire
Step 8:
Just now had known yellow wire hall sensor was broken. Please use electric iron to remove Hall A and use A-B glue to fix new hall sensor. Use insulated paper, insulated wire to fix PCB. Then re-build this hub motor.
Step 9:
Test as step 1.If can get the data from each hall sensor. Congratulate.
Power on battery, the hub motor wheel works.
Hub motor, BLDC motor, electric bike motor supplier: Leaf Motor Technology Co., Ltd
Website: https://www.leafmotor.com/
2012年6月4日星期一
Electric Hub Motor | E-Bike Conversion Kit™: Spokes for hub motor bike conversion kit
Electric Hub Motor | E-Bike Conversion Kit™: Spokes for hub motor bike conversion kit: Q: I ordered a 750W hub motor last month. Now I am going to fix a 20 inch bike motor wheel. Are there standard spokes with nipples I can ...
Electric Hub Motor | E-Bike Conversion Kit™: electric bike conversion kit battery
https://www.leafmotor.com/
Electric Hub Motor | E-Bike Conversion Kit™: electric bike conversion kit battery: Q: After order hub motor wheel bike conversion kit with battery. When could you ship this electric bike battery . Is it only one blue pac...
Electric Hub Motor | E-Bike Conversion Kit™: electric bike conversion kit battery: Q: After order hub motor wheel bike conversion kit with battery. When could you ship this electric bike battery . Is it only one blue pac...
electric bike conversion kit battery
Q: After order hub motor wheel bike conversion kit with battery. When could you ship this electric bike battery . Is it only one blue packing plastic battery like the one you send me a picture of that one fix on to my frame I just need to hold it with zip ties. Dose this electric bike battery have a on and off switch. or is it a pack with like 2 battery's in a bag?
A: This blue packing plastic battery doesn't have ON/OFF switch. Only frog/bottle style battery has this key or ON/OFF switch.
If you need 36V bike kit system, You can order frog/bottle battery.
Frog battery is easy to hold on your seat-post, don't need to drill two holes on your frame.
We sell lithium battery, it's lighter."2 battery's in a bag" that is 24V sealed lead acid battery. It's very heavy and cheap.
Q: I didn't read the last sentence I don't want batteries In a bag because it is to big then I need the rack I don't like racks. I sent it from my IPod I drop it and catched it and I press the send bottle. So I was saying I don't like the rack, but with the blue packing plastic battery 48v 10ah is it one pack or 2 pack that comes with the kit, and Connect to the controller. The one you Send is just one, it has 2 wires on each side is that the one that comes with the kit. and how can I turn it off and on the bottle battery is to big and long.
A: 48V 10Ah is one pack that is made up of many cells with BMS.
If we order our hub motor bike conversion kit and electric bike battery. We first to ship bike conversion kit in 24 hours. Any lithium battery should be customized as order. Because electric bike battery is different from other goods. It has use life. It takes about 7 days to customize.
There are one positive wire, one negative wire and one plug for a charger. Turn off should disconnect wires. Sure, also can connect a switch to control it(ON/OFF)
Q: There isn't the pass used for how hard you pedal, if you pedal hard hub motor will go faster. what about if I don't install the pas and I pedal will it go faster or will it go at the same speed, also if I install the pas can I still go fast with out pedaling, or do I need to keep on pedaling to go fast with the pas up hills.
A: Our hub motor bike conversion kit can work with throttle/pas.
If both install throttle and pas.
1.If you pedal it, don't use throttle, pedal faster, hub motor wheel run faster.
2.If you twist throttle, don't pedal.Twsit more, hub motor wheel faster.
3.If you twist throttle and pedal together, only one decide speed.
When you ride on the road or up hills, most of time use throttle, don't need to pedal. Sure, if you need to do exercise. Please pedal more.
Bike conversion kit, hub motor, electric bike battery supplier: Leaf Motor Technology Co., Ltd
Website: https://www.leafmotor.com/
A: This blue packing plastic battery doesn't have ON/OFF switch. Only frog/bottle style battery has this key or ON/OFF switch.
If you need 36V bike kit system, You can order frog/bottle battery.
Frog battery is easy to hold on your seat-post, don't need to drill two holes on your frame.
We sell lithium battery, it's lighter."2 battery's in a bag" that is 24V sealed lead acid battery. It's very heavy and cheap.
Q: I didn't read the last sentence I don't want batteries In a bag because it is to big then I need the rack I don't like racks. I sent it from my IPod I drop it and catched it and I press the send bottle. So I was saying I don't like the rack, but with the blue packing plastic battery 48v 10ah is it one pack or 2 pack that comes with the kit, and Connect to the controller. The one you Send is just one, it has 2 wires on each side is that the one that comes with the kit. and how can I turn it off and on the bottle battery is to big and long.
A: 48V 10Ah is one pack that is made up of many cells with BMS.
If we order our hub motor bike conversion kit and electric bike battery. We first to ship bike conversion kit in 24 hours. Any lithium battery should be customized as order. Because electric bike battery is different from other goods. It has use life. It takes about 7 days to customize.
There are one positive wire, one negative wire and one plug for a charger. Turn off should disconnect wires. Sure, also can connect a switch to control it(ON/OFF)
Q: There isn't the pass used for how hard you pedal, if you pedal hard hub motor will go faster. what about if I don't install the pas and I pedal will it go faster or will it go at the same speed, also if I install the pas can I still go fast with out pedaling, or do I need to keep on pedaling to go fast with the pas up hills.
A: Our hub motor bike conversion kit can work with throttle/pas.
If both install throttle and pas.
1.If you pedal it, don't use throttle, pedal faster, hub motor wheel run faster.
2.If you twist throttle, don't pedal.Twsit more, hub motor wheel faster.
3.If you twist throttle and pedal together, only one decide speed.
When you ride on the road or up hills, most of time use throttle, don't need to pedal. Sure, if you need to do exercise. Please pedal more.
Bike conversion kit, hub motor, electric bike battery supplier: Leaf Motor Technology Co., Ltd
Website: https://www.leafmotor.com/
2012年5月26日星期六
Spokes for hub motor bike conversion kit
Q: I ordered a 750W hub motor last month. Now I am going to fix a 20 inch bike motor wheel. Are there standard spokes with nipples I can order on leaf motor online anywhere as order bike conversion kit ? If so- where ( what ’s the standard, exact measurements ) ?
If I order from you, what would be the price?
A: It's very difficult to replace spokes for hub motor ,there are not standard ones.
The length of spoke is lie on the dia.of hub motor and bike rim.
Ours are double alloy rims,20" rim: eyelet to eyelet is 360mm.
If you order rim and spokes with nipples,just costs $30USD,but the shipment costs $100USD
Because the vol. of bike rim is very large.
If you don't order bike rim, just order spokes with nipple, it’s very hard to done your bike kit. Why not order bike conversion kit directly ?
Another way, you order 20 inch bike motor wheel with rim and hub. But without rotor winding. When you receive this hub wheel, you should disconnect your hub motor, take the rotor winding out of your hub, and put into this 20 inch wheel. This is the best choice. Cost less, easier to solve your issue.
Q: I tried to take out a spoke and I was successful. I then tried to put the spoke back into the bike rim and I succeeded again. So I would like to order a set of spokes without the rim. How much would it cost?
A: The price of 1 set of spokes is $10USD;
The price of shipment by EMS is $50USD (USA or Europe)
Total price:$60USD
Q: Yes, I'd like to go ahead and purchase it.
To double check :
- Are nipples included?
- Spoke (nipples) are for 20" rim (750W motor)?
- How can I pay for it – PayPal ? What's PayPal ID (email)?
A: I am not sure you can install them. We will send you a set of spokes (more than 36 pieces with
nipples) You could pay on our website directly. www.leafmotor.com
Q: I just sent you $60USD directly via PayPal (Transaction ID#28L39717XW247817D,date 25-May-2012)I couldn't do it from your website, so you will only see PayPal payment (may not see any order)
A: Could you tell me your correct address and telephone that for shipment.
We are going to ship out your products in 24 hours.
You will receive below goods:
1.36 pcs spokes with nipples for 20" 750w hub motor bike conversion kit
Bike conversion kit, hub motor, bike motor supplier: Leaf Motor Technology Co., Ltd
20 inch hub motor electric bike conversion kit
Q: Do I need to drill holes in my bike？I don't want holes in my bike that bike is expensive now I want the pedal assist will it come with bike conversion kit .
A: If you do need our bottle style electric bike battery, you should drill two holes on your bike frame then can install this lithium battery. If you order our bike conversion kit, we can offer you 1 set of pedal assist for free.
Q: Can I return it if it doesn't fit? I meant the 20'' rim with the hub motor .The bottle style lithium battery doesn't fit. The 48v 10ah electric bike battery fits. I am going to use zip ties. I downloaded the drawing but dimensions doesn't say inches or mm. Can you please tell me what are they inches or milliliters?
A: We aren’t agree with return after we shipped electric bike kit . Because the shipping fee is too expensive, we will update these data with inch. What type of drawing did you download,20 inch rim or hub motor ? We can note more dimensions on this drawing.
1 inch=2.54cm 1cm=10mm 1 gallon=3.785 liters 1 liter=1000 milliliters
Q: Also you didn't answer my question about the pas, will it come with the bike kit if I click pedal assist on your website. Or do I need to buy it separate. If I do how much does it cost? I downloaded the drawing the one you send me. I don't understand that because it doesn't say inches or milliliters. When are you guys going to update the hub motor ′s drawing. The rear electric bike kit tire has a coaster brake with a thick silk tire that's what the tire says on it and it has a thick hub on it. I think a 20'' electric rim with hub motor wont fit on it. Can you send me a picture of a 20'' electric rim with hub motor. I am going to print the picture and show it to the bike mechanic where I bought my bike to see if the 20'' front hub motor or the 20'' rear electric bike kit will fit my bike. Everything fits on my bike what I am worried about is the rims with the hub motor.
A: If you order bike kit, we can offer you a pas for free. Your rear frame fork can't install our 20" rear hub motor. Because the spacing of your rear frame fork is 120mm (4.7") or 125mm(4.9").If install standard rear hub motor, the spacing must be 135mm(5.3").All dimension on our drawing should be "mm". We have all pictures and drawings about hub motor, electric bike conversion kit. But we only send your drawings. If you do want to convert your bike, you must convert 20 inch front wheel. That is best choice.
Q: I am going to order bike conversion kit in the summer. Are you sure the front 20'' rim casting hub motor will fit my fork, how long will the electric bike battery take to be delivered to my house. That's it no more questions if I have another question ill email you thank you it was pleasure talking to you.
A: It's no problem. We are sure our 20" front rim casting hub motor that can fit your fork and also only convert 20inch front bike kit.
If we ship goods on Monday, Tuesday and EMS express doesn't delay. It takes about three days to deliver. Electric bike battery should take about 7 days to customize and deliver it takes about 3-5 days.
Bike conversion kit, hub motor, electric bike kit, bike kit supplier: Leaf Motor Technology Co., Ltd
Website: https://www.leafmotor.com
2012年5月15日星期二
18 inch hub motor bike kit
Q: Are these dimensions inches or centimeters about hub motor ? Can I pedal with this bike kit . What about the torque arm? Does it come in the conversion bike kit . These pictures are from my bike do you think that everything that need to go on the handle bars will fit, including the twist throttle, it looks small my handle bars they are thick. Do you think the 18" bike motor rim will fit on this tire, does the torque arm come with the bike conversion kit. Do you think it will fit on the tire. Do you think the battery will fit on the frame . If I order the LEP-4810 48v 10AH+charger that's the battery blue plastic packing I am going to get. if I buy the bike conversion kit everything I need comes with the bike kit I don’t need to buy something separate if for some reason I doesn't fit can I return it and get a 20'' front hub motor wheel kit how many years of warranty do I get and what does it cover. Sorry for so many questions I just need to find the right bike kit. What are the dimensions of the controller long, wide and height.
A: We have rack. If possible, controller and battery can be put on this rack.
It takes about 10s to install this rack. Your tire is fit for our 18" hub motor. Install front bike motor is easy. It takes about 2 minutes to install. Your handle bars are thick, but can't control speed. We can offer you a pas for free, when pedal, it will work. How to install this pas? Don't worry, everything you buy will be fit for your frame.20" front wheel can't be install on your front fork. Install 18inch wheel is the best choice. Can I get a question, img22mm enclosed? What size of your aluminum tubes,φ22 or φ25? Standard dia. is φ22.It's install our throttle, brake levers..
Q: But I don't like the rack is there a way do put the battery and the controller on to the frame. My friend told me I need carbon fiber stands. How can I tell if the handle bars are 22s or 25s. I measured them but it’s hard to get the actual thickness they are round. I think they are 22s, but still can you help me figure it out. Does the bike kit have a warranty. Do I need the pass how do I install it do I take off the pedal then I put in, what about the torque arm does it come with the kit, that is important, also how fast do I pedal or I just twist the throttle and it goes. What are the dimensions of the rim with the bike motor, I just need the thickness to see if it is ok. Does the battery and the controller heat up do they need to breathe, because I don't like the rack I’m thinking of mounting the battery and the controller with duct tape, I don't want to burn them they are expensive.
Website: https://www.leafmotor.com
2012年5月13日星期日
How to build a geared hub motor for bike kit
These days 250w hub motor wheels are popular with European. Nearly all of hub bike motor are brushless geared. Because there are several gears inside hub. It has more powerful than 250w brushless geared motor.
Order 1 set 12" 14" 16" 18" 20" 24" 26" 700c 28" inch hub motor bike kit , convert your common bike to e-bike is so easy. Directly front or rear drive your bike.
The important part is an engine -hub motor. How to build this? There are some differences with brushless gearless hub motor.
Step 1: winding
Calculate motor power, speed RPM and confirm what type of copper wire would you use, wind copper wires by handwork or machine, each notch should be separated by insulating paper so that not shot circuit between the coil. It takes about 1 hour to done it by handwork. And should use rubberized fabric to wrap your fingers. Nipping copper wires will break your fingers.
Step 2: fix axis into motor
Put axis into rotor winding and use a key to fix axis. Use A-B glue to paste three hall sensors on hub motor rotor, put 9-pin (three pin/each hall) into PCB and use insulated wire to fix it. Put 8-pin cable inside the axis and heavy yellow, blue, green wires to connect the three copper wires(Phase A,B,C) separately. Thin red, black wires are be weld to PCB + and - .
Step 3:soak paint
After winding should soak paint in order to be insulated. Use brush to put the insulated paint on the winding and make sure be soaked everywhere. It takes about 24 hours.
Step 4:press gear into hub
Use presser to press steel 90-gear into hub. This hub with one side cover.
Step 5:fix three gears
Use retainer ring and key to fix three white nylon gears on one steel 21-gear.
Step 6:fix magnet
Fix magnet inside the hoops.
Step 7:install rotor winding into this magnet hoops.
Step 8:install there gears on the axis of this rotor winding and put inside of hub with 90-gears.
Step 9:install the other cover.
Use screw driver to tight screw nuts. Done it.
Power on battery and use bldc motor controller to drive this hub motor. If no any strange noise. It's okay.Then according as the size of your bike to fit this geared spoke hub motor to 20" 24" 26" 700c 28" inch bike kit wheel.
Hub motor, bike kit, bike motor supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
2012年4月27日星期五
How to build spokes on hub motor for electric bike ?
DIY electric bike conversion kit and convert your bike is funny. Sometimes we prefer to purchase spoke hub motor , bike rim and spokes. And build spokes on electric bike motor by ourselves.
If we want to convert 26inch front wheel, we should purchase 1 set of front spokes hub motor, 26inch rim and 36pcs of spokes. We can purchase them from leaf bike motor shop online.
Received goods and check them:
1. How many spokes you received. Generally we need 36 pcs spokes to built on hub motor and 12 gauge spokes for electric bike. 13, 14 gauge spokes are too thin, just for common bike.
2. There are 36 eyelet on bike rim and hub motor.
3. Check nipple and the dia. of eyelet on rim, make sure the nipple can put into eyelet.
Calculate the length of spoke :
If you use 205 leaf front hub motor, the eyelet to eyelet of rim is 511mm that is 26inch rim, spokes should be 155mm length.
You need below tools to install spokes on hub motor.
1.iron shelf
2.slotted screwdriver
3.nipple wrench
4.magnet
5.rubber hammer
6.tape measure
7.calipers
Done check, everything is okay. But we found the dia. of nipple is 4.5mm and the rim is also 4.5mm. These eyelets are too small. See pictures.
Get an electric drill and 4.8mm aiguille. Drill 36 pcs of eyelets on bike rim first. Adjust the iron shelf so that the dia. is 100mm. Because standard front fork is 100mm. Then put the rim inside the iron shelf, hold on the hub motor. Make the first spoke wear into hub from left side, the next from right side. One by one from left side to right side. Done install all 36 pcs of spokes, please check them whether correct. See pictures.
If no problem, we should hold spokes on rim by nipples First hold one spoke on left side, then cross to fix another spoke on left side. Next step, cross two spokes on rights side and fix them. Left side, right side, a group of four spokes. See pictures.
Fix all spokes, we should use wrench to tight spokes a little, please don’t be too tight. Use hand to turn wheel, make sure there is no noise from friction of rim and nipple. Use rubber hammer to knock rim when the wheel is running so that the rim will be not jumping up and down. Still to tight spokes a little. See pictures.
Turn wheel, you will find the rim from left side to right side. In order to make the wheel running in the middle. We use calipers to measure and get the data. Then use a magnet to hold a pin. See pictures. If rim to the left, we tight right side spokes or loose left side spokes. See pictures.
It takes about 1 hour to build an wheel.
If we want to convert 26inch front wheel, we should purchase 1 set of front spokes hub motor, 26inch rim and 36pcs of spokes. We can purchase them from leaf bike motor shop online.
Received goods and check them:
1. How many spokes you received. Generally we need 36 pcs spokes to built on hub motor and 12 gauge spokes for electric bike. 13, 14 gauge spokes are too thin, just for common bike.
2. There are 36 eyelet on bike rim and hub motor.
3. Check nipple and the dia. of eyelet on rim, make sure the nipple can put into eyelet.
Calculate the length of spoke :
If you use 205 leaf front hub motor, the eyelet to eyelet of rim is 511mm that is 26inch rim, spokes should be 155mm length.
You need below tools to install spokes on hub motor.
1.iron shelf
2.slotted screwdriver
3.nipple wrench
4.magnet
5.rubber hammer
6.tape measure
7.calipers
Done check, everything is okay. But we found the dia. of nipple is 4.5mm and the rim is also 4.5mm. These eyelets are too small. See pictures.
Get an electric drill and 4.8mm aiguille. Drill 36 pcs of eyelets on bike rim first. Adjust the iron shelf so that the dia. is 100mm. Because standard front fork is 100mm. Then put the rim inside the iron shelf, hold on the hub motor. Make the first spoke wear into hub from left side, the next from right side. One by one from left side to right side. Done install all 36 pcs of spokes, please check them whether correct. See pictures.
If no problem, we should hold spokes on rim by nipples First hold one spoke on left side, then cross to fix another spoke on left side. Next step, cross two spokes on rights side and fix them. Left side, right side, a group of four spokes. See pictures.
Fix all spokes, we should use wrench to tight spokes a little, please don’t be too tight. Use hand to turn wheel, make sure there is no noise from friction of rim and nipple. Use rubber hammer to knock rim when the wheel is running so that the rim will be not jumping up and down. Still to tight spokes a little. See pictures.
Turn wheel, you will find the rim from left side to right side. In order to make the wheel running in the middle. We use calipers to measure and get the data. Then use a magnet to hold a pin. See pictures. If rim to the left, we tight right side spokes or loose left side spokes. See pictures.
It takes about 1 hour to build an wheel.
2012年4月14日星期六
The Displayer Operating Manual for LCD motor controller
When you received leaf motor 's bike motor kit with the LCD motor controller .Don’t know how to handle it.
For example: 36V LCD motor controller
1. Power switch
Supply battery, press power switch once, the LCD panel will display total mileage, speed , battery capacity and the time (time will be recounted once the power is on).
Voltage ≥ 36V four cells
36V > Voltage ≥ 34.5V two cells
33V > Voltage ≥ 31.5V one cell (flash every 0.5 second)
Voltage < 31.5V no cells (flash every 0.5 second)
2. → Next button
Users may adjust freely between different levels of assistant functions by this button.
3. Set button
3.1 Press set button once, “KM” light is on. At this status, the single mileage will be shown in this area. You may reset it by → button.;
3.2 Press “SET” one time under the status of single mileage, total mileage will be shown. Press it again , it will display single mileage;
3.3 Press “SET” for 5 seconds, the light is on. At this status, you may set with → the size of wheel diameter from 10inch to 30inch in speed display area.
3.4 Fault code
Eight status of fault instruction from 01~05, 07~09 will be displayed in speed area when the light is flashing.
01: Abnormal connection between displayer and controller;
02: Excessive current is detected in controller. If the status remains the same after restarting, it is certain that something is wrong with the controller internal power devices.
03: Motor three-phase power lines are fallen off, or motor is stocked for more than 2 seconds. If the status remains the same after restarting, it is caused by undesirable contact of three-phase lines.
04: Battery is at the status of voltage protection;
05: Hall cables are not connected, or incorrectly connected.
07: It is wrong with the brake lever cable when system is running.
08: The controller internal current will detect if the circuit element is damaged. The status will be displayed if it is abnormal.
09: The battery voltage is measured all the time under the working state. If it is > 47V，the system will enter into high-voltage protection mode, stop working.
Bike motor, motor controller supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com/
For example: 36V LCD motor controller
1. Power switch
Supply battery, press power switch once, the LCD panel will display total mileage, speed , battery capacity and the time (time will be recounted once the power is on).
Voltage ≥ 36V four cells
36V > Voltage ≥ 34.5V two cells
33V > Voltage ≥ 31.5V one cell (flash every 0.5 second)
Voltage < 31.5V no cells (flash every 0.5 second)
2. → Next button
Users may adjust freely between different levels of assistant functions by this button.
3. Set button
3.1 Press set button once, “KM” light is on. At this status, the single mileage will be shown in this area. You may reset it by → button.;
3.2 Press “SET” one time under the status of single mileage, total mileage will be shown. Press it again , it will display single mileage;
3.3 Press “SET” for 5 seconds, the light is on. At this status, you may set with → the size of wheel diameter from 10inch to 30inch in speed display area.
3.4 Fault code
Eight status of fault instruction from 01~05, 07~09 will be displayed in speed area when the light is flashing.
01: Abnormal connection between displayer and controller;
02: Excessive current is detected in controller. If the status remains the same after restarting, it is certain that something is wrong with the controller internal power devices.
03: Motor three-phase power lines are fallen off, or motor is stocked for more than 2 seconds. If the status remains the same after restarting, it is caused by undesirable contact of three-phase lines.
04: Battery is at the status of voltage protection;
05: Hall cables are not connected, or incorrectly connected.
07: It is wrong with the brake lever cable when system is running.
08: The controller internal current will detect if the circuit element is damaged. The status will be displayed if it is abnormal.
09: The battery voltage is measured all the time under the working state. If it is > 47V，the system will enter into high-voltage protection mode, stop working.
Bike motor, motor controller supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com/
2012年4月10日星期二
How-to-build-a-hub-electric-bike-motor
These days hub electric bike motor wheels are used for e-bikes widely. Nearly all of hub bike motor are brushless gearless. Because of low noise, high efficiency, long life are popular with riders.
Order 1 set 12" 14" 16" 18" 20" 24" 26" 700c 28" inch hub motor kit, convert your common bike to e-bike is so easy. Directly front or rear drive your bike.
The important part is an engine -hub motor. How to build this electric bike motor?
Step 1: winding
Calculate motor power, speed RPM and confirm what type of copper wire would you use. Next is fix a rotor on the steel shelf, wind copper wires by handwork or machine. It takes about 1 hour to done it by handwork. And should use rubberized fabric to wrap your fingers. Nipping copper wires will break your fingers.
Step 2:soak paint
After winding should soak paint in order to be insulated. Use brush to put the insulated paint on the winding and make sure be soaked everywhere. It takes about 24 hours.
Step 3:press axis into rotor
Put axis into rotor winding and use a key to fix axis. Use A-B glue to paste three hall sensors on hub motor rotor, put 9-pin (three pin/each hall) into PCB and use insulated wire to fix it. Put 8-pin cable inside the axis and heavy yellow, blue, green wires to connect the three copper wires(Phase A,B,C) separately. Thin red, black wires are be weld to PCB + and - .
Step 4:paste magnet
Paste magnet inside hub, one N pole, next S pole ..one by one. More magnet, higher torque, more power. The height of our magnet is 30mm,6mm higher than other hub motor. In market,24mm high magnet only build max 500w electric bike motor. So our bike motor works at 36V can reach 750w.
Put the rotor winding inside the magnet hub, be careful hand. It has powerful magnetism.
Step 6:install two covers
Before installing both covers, we should press bearing into cover. Use hexagon wrench to tight screw nuts. When you hear "poop" from electric bike motor. That means install correctly. Done it.
Power on battery and use bldc motor controller to drive this hub motor. If no any strange noise. It's okay.
Hub motor, electric bike motor, bike motor supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
Order 1 set 12" 14" 16" 18" 20" 24" 26" 700c 28" inch hub motor kit, convert your common bike to e-bike is so easy. Directly front or rear drive your bike.
The important part is an engine -hub motor. How to build this electric bike motor?
Step 1: winding
Calculate motor power, speed RPM and confirm what type of copper wire would you use. Next is fix a rotor on the steel shelf, wind copper wires by handwork or machine. It takes about 1 hour to done it by handwork. And should use rubberized fabric to wrap your fingers. Nipping copper wires will break your fingers.
Step 2:soak paint
After winding should soak paint in order to be insulated. Use brush to put the insulated paint on the winding and make sure be soaked everywhere. It takes about 24 hours.
Step 3:press axis into rotor
Put axis into rotor winding and use a key to fix axis. Use A-B glue to paste three hall sensors on hub motor rotor, put 9-pin (three pin/each hall) into PCB and use insulated wire to fix it. Put 8-pin cable inside the axis and heavy yellow, blue, green wires to connect the three copper wires(Phase A,B,C) separately. Thin red, black wires are be weld to PCB + and - .
Step 4:paste magnet
Paste magnet inside hub, one N pole, next S pole ..one by one. More magnet, higher torque, more power. The height of our magnet is 30mm,6mm higher than other hub motor. In market,24mm high magnet only build max 500w electric bike motor. So our bike motor works at 36V can reach 750w.
Put the rotor winding inside the magnet hub, be careful hand. It has powerful magnetism.
Step 6:install two covers
Before installing both covers, we should press bearing into cover. Use hexagon wrench to tight screw nuts. When you hear "poop" from electric bike motor. That means install correctly. Done it.
Power on battery and use bldc motor controller to drive this hub motor. If no any strange noise. It's okay.
Hub motor, electric bike motor, bike motor supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
2012年4月8日星期日
Check your hub motor wheel - electric bike kit
Order 1 set of electric bike kit from manufacturer-leaf motor and convert your bike to e-bike is a fun. But sometimes when we receive packages and don't know how to hanle it. Follow us:
Before install electric bike kit, we should test it first.
Step 1: Deliver your package
Spent some days on Internet, at last found leaf motor 's electric bike kit is the best. Ordered it and paid by paypal. Waiting for... About 3 days later, post officer knocked my door (EMS) and sign in it.
Check packing box first ,if it's okay. Pls disconnect electric bike kit box.
Step 2: Check all goods in package
Take out 26" hub motor rear wheel, bldc motor controller, lcd, throttle, brake lever, three button switches, speed signal wire and some connectors from packing box. Check each goods and make sure everything doesn't have fault.
Step 3: hold on 26" hub motor wheel
Put the hub motor wheel on your frame fork and tight both screw nuts.
Step 4: install magnet detector
Step 5: connect wires
1.Plug male 6-pin hall wires from hub motor cable to female connector from bldc motor controller;
2.Connect heavy yellow, green, blue from hub motor cable to heavy yellow, green, blue from bldc motor controller, color to color;
3.Two grey wires: connect these two wires/half speed; disconnect them/full speed;
4.Throttle connector is 3-pin that is easy to identify. Red: +4.5V, black: GND, green: Signal
5.Brake lever connector is white 2-pin.When hub motor is working, press brake lever is to cut off power;
6.Signal wire is black three pin plug that should be connected to white three pin female connector.
7.The other three pin connector from bldc motor controller is used for PAS;
8.Connect four pin lcd plug.
Make sure each wire is connected correctly. Power on battery.(Heavy red wire: +, black wire: - )Be careful,36V controller must work at 36V battery, if supply 48V DC, it will break the bldc motor controller at once.
Power on battery and press ON/OFF button on LCD one time, the LCD will light. Twist your throttle,hub motor starts to run. No strange noise...Press brake lever, electric bike kit system stops, loose it,the hub motor runs.
Pls watch video .
https://www.youtube.com/watch?v=SrwYae6zOMA
By test electric bike kit system, we found hub motor wheel, bldc motor controller, throttle.. everything is good. Next step is that we start to convert them on bike.
Hub motor, electric bike kit supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
Before install electric bike kit, we should test it first.
Step 1: Deliver your package
Spent some days on Internet, at last found leaf motor 's electric bike kit is the best. Ordered it and paid by paypal. Waiting for... About 3 days later, post officer knocked my door (EMS) and sign in it.
Check packing box first ,if it's okay. Pls disconnect electric bike kit box.
Step 2: Check all goods in package
Take out 26" hub motor rear wheel, bldc motor controller, lcd, throttle, brake lever, three button switches, speed signal wire and some connectors from packing box. Check each goods and make sure everything doesn't have fault.
Step 3: hold on 26" hub motor wheel
Put the hub motor wheel on your frame fork and tight both screw nuts.
Step 4: install magnet detector
Step 5: connect wires
1.Plug male 6-pin hall wires from hub motor cable to female connector from bldc motor controller;
2.Connect heavy yellow, green, blue from hub motor cable to heavy yellow, green, blue from bldc motor controller, color to color;
3.Two grey wires: connect these two wires/half speed; disconnect them/full speed;
4.Throttle connector is 3-pin that is easy to identify. Red: +4.5V, black: GND, green: Signal
5.Brake lever connector is white 2-pin.When hub motor is working, press brake lever is to cut off power;
6.Signal wire is black three pin plug that should be connected to white three pin female connector.
7.The other three pin connector from bldc motor controller is used for PAS;
8.Connect four pin lcd plug.
Make sure each wire is connected correctly. Power on battery.(Heavy red wire: +, black wire: - )Be careful,36V controller must work at 36V battery, if supply 48V DC, it will break the bldc motor controller at once.
Power on battery and press ON/OFF button on LCD one time, the LCD will light. Twist your throttle,hub motor starts to run. No strange noise...Press brake lever, electric bike kit system stops, loose it,the hub motor runs.
Pls watch video .
https://www.youtube.com/watch?v=SrwYae6zOMA
By test electric bike kit system, we found hub motor wheel, bldc motor controller, throttle.. everything is good. Next step is that we start to convert them on bike.
Hub motor, electric bike kit supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
2012年4月6日星期五
Hub motor was very sluggish
Question:While trying to get the hub motor up and running here we have run in to some problems. After installing the hub motor wheel in the fork it was very sluggish to turn and took quite a bit of effort, not freewheeling at all. The first time we plugged the battery (fully charged 48V 12AH LiFePo4 at 52.9V) in to hub motor (without the throttle connected to the controller cable) the hub motor beeped three times. When we hooked up the controller cable black and yellow pin connectors to the corresponding ones on the throttle there was no response from the electric bike motor , but the battery level lights did light up. We tried both throttles sent with the same results.
As it was the weekend I went to the forum and looked there for assistance. I received some good feedback that the 3 beeps we heard were a signal that the throttle was not functionable which is what we found as soon as we hooked up the throttle. We have checked all the leads for correct amperage as per his instructions with positive results.
I am assuming that electric bike kit is bench tested before it leave there? The packaging was undamaged upon delivery and all seemed in good order upon receipt. If you could please advise us on what to do to get this resolved we would appreciate it as we want to get on with our trials here to be able to get out product to market by summer.
I have checked my throttle and hub motor controller wires against your PDF diagram and there seems to be some discrepancy? I wish my camera was working but I will describe my findings. Diagram Throttle Black 3 pin shows: Red? perhaps Orange?/White/Blue Our Throttle Black 3 pin has:
Orange/White/Black from core with black jump to yellow 2 pin Diagram Controller Black 3 pin has: Red? perhaps Orange?/black/Yellow Hub Motor Controller Black 3 pin has: Rust from Core with Red Jumper to PAS White three pin/White/Black from core with Black jumper to yellow 2 pin
I checked the 8 pin connector again and can’t see that it isn’t making good contact. No bent pins or obstructions.Electric Bike Motor still beeps three times upon connecting to full battery as described with and without full connections of cables.
Yes jumping the two holes as indicated does make the electric bike kit run. It seemed like at first that by moving the controller wire that the electric bike motor would stop and start as if there was a short right at the junction and we thought that might be the problem. We hooked up the cable but I still am not getting any response from either throttle when hooked up to the black two pin connector even if I move the cable at the junction and now using the jumper the short method that issues seems to have gone away?
We are trying hard to make this electric bike kit work here but I have to admit we are getting a bit frustrated. The throttle cable while hooked up shows 5.0 amps on the red wire and from .8 amps at rest and 3.8 amps on the white wire when at full throttle like it should? Without the black pin connector together there are 5.0 amps at the red wire and .1 amps at the white wire if that is any useful information.
Hub motor,electric bike motor,electric bike kit supplier: Leaf Motor Technology Co.,Ltd
Source:https://www.leafmotor.com
As it was the weekend I went to the forum and looked there for assistance. I received some good feedback that the 3 beeps we heard were a signal that the throttle was not functionable which is what we found as soon as we hooked up the throttle. We have checked all the leads for correct amperage as per his instructions with positive results.
I am assuming that electric bike kit is bench tested before it leave there? The packaging was undamaged upon delivery and all seemed in good order upon receipt. If you could please advise us on what to do to get this resolved we would appreciate it as we want to get on with our trials here to be able to get out product to market by summer.
I have checked my throttle and hub motor controller wires against your PDF diagram and there seems to be some discrepancy? I wish my camera was working but I will describe my findings. Diagram Throttle Black 3 pin shows: Red? perhaps Orange?/White/Blue Our Throttle Black 3 pin has:
Orange/White/Black from core with black jump to yellow 2 pin Diagram Controller Black 3 pin has: Red? perhaps Orange?/black/Yellow Hub Motor Controller Black 3 pin has: Rust from Core with Red Jumper to PAS White three pin/White/Black from core with Black jumper to yellow 2 pin
I checked the 8 pin connector again and can’t see that it isn’t making good contact. No bent pins or obstructions.Electric Bike Motor still beeps three times upon connecting to full battery as described with and without full connections of cables.
Yes jumping the two holes as indicated does make the electric bike kit run. It seemed like at first that by moving the controller wire that the electric bike motor would stop and start as if there was a short right at the junction and we thought that might be the problem. We hooked up the cable but I still am not getting any response from either throttle when hooked up to the black two pin connector even if I move the cable at the junction and now using the jumper the short method that issues seems to have gone away?
We are trying hard to make this electric bike kit work here but I have to admit we are getting a bit frustrated. The throttle cable while hooked up shows 5.0 amps on the red wire and from .8 amps at rest and 3.8 amps on the white wire when at full throttle like it should? Without the black pin connector together there are 5.0 amps at the red wire and .1 amps at the white wire if that is any useful information.
Hub motor,electric bike motor,electric bike kit supplier: Leaf Motor Technology Co.,Ltd
Source:https://www.leafmotor.com
Hub motor kit ceased to function
On February 8th we ordered your 26” 48V 1000W front electric bike kit (1 set of 26” 48 1000W hub motor wheel with lcd bldc motor controller,twist throttle,brake levers,48V li battery) which was delivered to us on February 13th.Shipment is very fast.But the packing box is broken,we disconnect it and found the left brake lever was defective and I e-mailed you about getting a replacement set of levers. You told me that the parts would be sent. They never were received. I disconnected the lever plugs and have been using the bike for the past 1 month without them being hooked up.
Last week the bike ceased to function. I have 50+ volts going to the bldc motor controller connection but when I plug in the hub motor controller, the voltage drops to 1.8V and nothing happens. When I disconnect the hub motor connection, the voltage remains at 1.8V. As soon as I disconnect the battery, the electric bike battery shows full voltage of 50+ volts. The voltage indicator lights do not light up at all. So I have good voltage going to the controller but nothing works. I disassembled the controller to see if there was a broken connection or burned out part but can find nothing visibly wrong – when I connect a tester to the board the voltage shows 1.8 when should be 50 at the input connection. Something is wrong internally and I now need the hub motor controller to be replaced. I am relying on the electric bike kit to get to and from work so time is very important to me.
Please send me a new hub motor controller as soon aspossible. Also send me the previously promised brake lever set replacement at the same time (as long as it does not slow down the shipment of the hub motor controller). I would also appreciate it.
Hub motor,bldc motor,electric bike kit supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
Last week the bike ceased to function. I have 50+ volts going to the bldc motor controller connection but when I plug in the hub motor controller, the voltage drops to 1.8V and nothing happens. When I disconnect the hub motor connection, the voltage remains at 1.8V. As soon as I disconnect the battery, the electric bike battery shows full voltage of 50+ volts. The voltage indicator lights do not light up at all. So I have good voltage going to the controller but nothing works. I disassembled the controller to see if there was a broken connection or burned out part but can find nothing visibly wrong – when I connect a tester to the board the voltage shows 1.8 when should be 50 at the input connection. Something is wrong internally and I now need the hub motor controller to be replaced. I am relying on the electric bike kit to get to and from work so time is very important to me.
Please send me a new hub motor controller as soon aspossible. Also send me the previously promised brake lever set replacement at the same time (as long as it does not slow down the shipment of the hub motor controller). I would also appreciate it.
Hub motor,bldc motor,electric bike kit supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
Problem with electric bike hub motor kit
Good day.I have bought from you 1 set of 48V 1000W rear electric bike kit that includes 48V 12Ah li battery,48v lcd brushless motor controller,twist throttle,brake levers with 26” 1000w hub motor rear wheel.Received all things.The order number lf283218U578679K. Shipment was fast and packing box was not broken.
But since I had installed hub motor wheel,motor controller,throttle..everything, I had following problems: Twist throttle was sometimes hard to begin electric bike motor uphill, with even slightest elevation.Electric bike kit either stops unintentionally, while I begin to accelerate hub motor, or doesn’t start at all. Usually it takes several amperes to start throttling.Electric bike motor never gets hot, only a little bit warm.
Electric bike kit (regenerative) brakes almost didn’t work at all. It is possible to stop with them only from the lowest speed of 5km/h approximately. If the speed is more than this, brakes just let the hub motor to freewheel. I don’t know if they are converting electrical energy.
When I tried to use USB cable to see, if it is because of lcd hub motor controller settings, I couldn’t connect to it. Software starts, when I choose “Connect” nothing happens with the program itself, only the electric bike motor starts to beep constantly. “Get settings” didn’t load any, changing parameters and saving them seems to have no effect on the electric bike motor behaviour. Only “Disconnect” button worked, but somehow it says that “Get settings” is complete, and any changes in parameters reset to their initial state. After approximately 360km, “Cruise control” button stopped to work. I opened hub motor and checked electrical connection to the motor controller itself, the button itself and wires are functioning properly. But I have absolutely no voltage reading on the button’s wires.
Read article from blog and forum,I doubt the problem comes from electric bike battery.It as said,there is a BMS inside li battery.Some cells would be dead because of overcharge or overdischarge.If dead,can’t charge li battery.Even if charge it,green led on charger will light at once.It looks like full charge,actually no any electrical energy inside battery.So when I ride my hub motor electric bike,the electric bike motor will stop in short time.
Please, help me to resolve those electric bike kit problems, especially, with “Cruise control” button.
Hub motor,electric bike motor,electric bike kit supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
But since I had installed hub motor wheel,motor controller,throttle..everything, I had following problems: Twist throttle was sometimes hard to begin electric bike motor uphill, with even slightest elevation.Electric bike kit either stops unintentionally, while I begin to accelerate hub motor, or doesn’t start at all. Usually it takes several amperes to start throttling.Electric bike motor never gets hot, only a little bit warm.
Electric bike kit (regenerative) brakes almost didn’t work at all. It is possible to stop with them only from the lowest speed of 5km/h approximately. If the speed is more than this, brakes just let the hub motor to freewheel. I don’t know if they are converting electrical energy.
When I tried to use USB cable to see, if it is because of lcd hub motor controller settings, I couldn’t connect to it. Software starts, when I choose “Connect” nothing happens with the program itself, only the electric bike motor starts to beep constantly. “Get settings” didn’t load any, changing parameters and saving them seems to have no effect on the electric bike motor behaviour. Only “Disconnect” button worked, but somehow it says that “Get settings” is complete, and any changes in parameters reset to their initial state. After approximately 360km, “Cruise control” button stopped to work. I opened hub motor and checked electrical connection to the motor controller itself, the button itself and wires are functioning properly. But I have absolutely no voltage reading on the button’s wires.
Read article from blog and forum,I doubt the problem comes from electric bike battery.It as said,there is a BMS inside li battery.Some cells would be dead because of overcharge or overdischarge.If dead,can’t charge li battery.Even if charge it,green led on charger will light at once.It looks like full charge,actually no any electrical energy inside battery.So when I ride my hub motor electric bike,the electric bike motor will stop in short time.
Please, help me to resolve those electric bike kit problems, especially, with “Cruise control” button.
Hub motor,electric bike motor,electric bike kit supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
2012年3月26日星期一
The basic principles of the permanent magnet BLDC motor
We talk about one type of permanent magnet bldc motor for electric bike. It’s a bldc electric bike motor , sometimes we also call it brushless dc hub motor .
The permanent magnet bldc motor and the bldc motor driver is a typical product for e-bike recently.
Generally the electric bike motor ’s stator windings is made of a three phase star connection, with the three-phase asynchronous AC bldc motor is very similar. The hub motor rotor has been magnetized permanent magnet, in order to detect the polarity of the hub motor, there are three halls sensors on the rotor.
The bldc motor driver is made by the power electronic devices and integrated circuits, its function is to receive electric bike motor ’s start, stop and brake signal so that control the hub motor to start, stop and brake; receive the position sensor signals and reversing signal, used to control the inverse power tube change the bridge off to produce a continuous torque; receive the speed command and speed feedback signal used to control and adjust the speed; provide protection and display
The main circuit is a typical voltage-type AC – DC – AC circuit, inverter and other pieces of alternating square wave frequency of 5-26KHZ modulation wave symmetry.
Permanent magnet NS alternating exchange, the position sensor phase difference of 120 ° U, V, W, square wave, combined with the six-state encoding signal forward / reverse signal generator: 101,100,110,010,011,001, through processing logic components to produce conduction of T1-T4, T1-T6 turns on, the T3-T6 conduction, T3-T2 turn-on, turn-T5-T2, T5,-T4 conduction, which means that the DC bus voltage is incremented A + B-, A + C-, B + C-, B + A-, C + A-, C + B-, so that the rotor turned a pair of NS pole, T1-T6 power tube fixed into six states followed by conduction. Each state, only two phase windings are energized in order to change a state, the axis of the magnetic field generated by the stator windings 60 ° electrical angle of rotation in space, the rotor follows the stator magnetic field rotation is equivalent to the space of 60 ° electrical angle position, the rotor in a new location so the position sensor U, V, W to produce a new set of coding according to the agreement, the new coding and changed the power tube combination of conduction, the magnetic field generated by the stator winding shaft forward 60 ° electrical angle, and so on, permanent magnet electric bike motor produces continuous torque, drag the load for a continuous rotation. Permanent magnet DC motor commutation is itself, rather than forced by the inverter commutation, also known as controlled synchronous hub motor.
Hub motor, bldc motor, electric bike motor supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
The permanent magnet bldc motor and the bldc motor driver is a typical product for e-bike recently.
Generally the electric bike motor ’s stator windings is made of a three phase star connection, with the three-phase asynchronous AC bldc motor is very similar. The hub motor rotor has been magnetized permanent magnet, in order to detect the polarity of the hub motor, there are three halls sensors on the rotor.
The bldc motor driver is made by the power electronic devices and integrated circuits, its function is to receive electric bike motor ’s start, stop and brake signal so that control the hub motor to start, stop and brake; receive the position sensor signals and reversing signal, used to control the inverse power tube change the bridge off to produce a continuous torque; receive the speed command and speed feedback signal used to control and adjust the speed; provide protection and display
The main circuit is a typical voltage-type AC – DC – AC circuit, inverter and other pieces of alternating square wave frequency of 5-26KHZ modulation wave symmetry.
Permanent magnet NS alternating exchange, the position sensor phase difference of 120 ° U, V, W, square wave, combined with the six-state encoding signal forward / reverse signal generator: 101,100,110,010,011,001, through processing logic components to produce conduction of T1-T4, T1-T6 turns on, the T3-T6 conduction, T3-T2 turn-on, turn-T5-T2, T5,-T4 conduction, which means that the DC bus voltage is incremented A + B-, A + C-, B + C-, B + A-, C + A-, C + B-, so that the rotor turned a pair of NS pole, T1-T6 power tube fixed into six states followed by conduction. Each state, only two phase windings are energized in order to change a state, the axis of the magnetic field generated by the stator windings 60 ° electrical angle of rotation in space, the rotor follows the stator magnetic field rotation is equivalent to the space of 60 ° electrical angle position, the rotor in a new location so the position sensor U, V, W to produce a new set of coding according to the agreement, the new coding and changed the power tube combination of conduction, the magnetic field generated by the stator winding shaft forward 60 ° electrical angle, and so on, permanent magnet electric bike motor produces continuous torque, drag the load for a continuous rotation. Permanent magnet DC motor commutation is itself, rather than forced by the inverter commutation, also known as controlled synchronous hub motor.
Hub motor, bldc motor, electric bike motor supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
2012年3月23日星期五
LCD bldc motor controller for e-bike
There are two types of hub motor wheels are used for e-bikes. One type is hub bldc motor , the other is brushed hub motor. Because the brushed motor had some disadvantage of high noise, shorter-use life, low efficiency..
These days hub bldc motor wheels are used for electric bikes widely and had replaced brushed hub motor.
So more and more motor controller are showed in market. For example: cruise brushless controller , regen brushless controller, programmable brushless controller, lcd bldc motor controller…
Convert a bike to an e-bike, we should choose a hub bldc motor wheel with brushless controller and throttle, brake lever,on/off switches,disk brake,front&rear lights,horn..etc accessories
European like 250w hub bldc motor and North America prefer 750w / 1000w bldc motor. How to purchase a good brushless controller to drive this bldc motor .
Generally 250w bldc motor need to be driven by 6-MOSFET brushless controller, and a 9-MOSFET motor controller dirves a 750w bldc motor,a 12-MOSFET brushless controller dirves a 1000w bldc motor.
Now nearly all types of brushless controller for e-bikes have cruise, alert, reverse, limited speed..etc. function.
If you buy 1 set 48V DIY kit, you had better to choose 48V 12-MOSFET/15-MOSFET brushless controller. Please don’t order 9-MOSFET motor controller to drive your 1000W brushless controller, it’s the heart of e-bike. 1000W bldc motor will bring larger current and high temperature, 9-MOSFET can’t afford.
For the bulk .of motor controller, larger, better. Larger bulk has better cool system.
In past, there was a guy sold regen motor controller, but nearly all sold regen controllers were broken in 30 days. Because when you brake, this regen controller will bring twice current to stop your e-bike, thus larger current would break MOSFET directly.
Now programmable controller is still showed in market. This brushless controller seem has nice face, but its head is small, can’t stuff more MOSFET. Use this brushless controller to drive 750w / 1000w bike system and break this nice face controller is normal. Don’t be arrest by programmable. You will find nothing for actual use when you use.
We have LCD cruise controller, more MOSFET, don’t worry your motor controller will be broken.
LCD bldc motor brushless controller for e-bike.
Bldc motor, motor controller , brushless controller supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
These days hub bldc motor wheels are used for electric bikes widely and had replaced brushed hub motor.
So more and more motor controller are showed in market. For example: cruise brushless controller , regen brushless controller, programmable brushless controller, lcd bldc motor controller…
Convert a bike to an e-bike, we should choose a hub bldc motor wheel with brushless controller and throttle, brake lever,on/off switches,disk brake,front&rear lights,horn..etc accessories
European like 250w hub bldc motor and North America prefer 750w / 1000w bldc motor. How to purchase a good brushless controller to drive this bldc motor .
Generally 250w bldc motor need to be driven by 6-MOSFET brushless controller, and a 9-MOSFET motor controller dirves a 750w bldc motor,a 12-MOSFET brushless controller dirves a 1000w bldc motor.
Now nearly all types of brushless controller for e-bikes have cruise, alert, reverse, limited speed..etc. function.
If you buy 1 set 48V DIY kit, you had better to choose 48V 12-MOSFET/15-MOSFET brushless controller. Please don’t order 9-MOSFET motor controller to drive your 1000W brushless controller, it’s the heart of e-bike. 1000W bldc motor will bring larger current and high temperature, 9-MOSFET can’t afford.
For the bulk .of motor controller, larger, better. Larger bulk has better cool system.
In past, there was a guy sold regen motor controller, but nearly all sold regen controllers were broken in 30 days. Because when you brake, this regen controller will bring twice current to stop your e-bike, thus larger current would break MOSFET directly.
Now programmable controller is still showed in market. This brushless controller seem has nice face, but its head is small, can’t stuff more MOSFET. Use this brushless controller to drive 750w / 1000w bike system and break this nice face controller is normal. Don’t be arrest by programmable. You will find nothing for actual use when you use.
We have LCD cruise controller, more MOSFET, don’t worry your motor controller will be broken.
LCD bldc motor brushless controller for e-bike.
Bldc motor, motor controller , brushless controller supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
2012年3月22日星期四
The issue about 250W hub motor electric bike kit
Bought 1 set of electric bike kit from one supplier in China
When I was riding my electric bike three weeks ago, the 250w mini front hub motor suddenly started to make a strange and strong noise. If I try to turn the twist throttle on when the e-bike doesn’t have any load, I keep the hub motor wheel in the air. The electric bike motor works fine and electric bike kit does not make any noise.
However, if I try riding my electric bike and turning the throttle on, the electric bike motor starts making a strong and continuous noise. I tried to riding my bike keeping the brakes continuously pressed and any noise appears so it seems to be some electric problem. It is very strange and I am so much worried.
I took off electric bike kit wheel and used screwdriver to disconnect six screw nuts, took apart hub motor cover and found there was a rotor-winding, two bearings, three sets of 42-gear, 1 set of 21-gear on the axis, 1 set of 81-gear on the hub. There wasn’t any impurity inside the hub motor. Re-install and test electric bike motor wheel, still have the same problem. Don’t know what’s the problem.
Contact my supplier many times and can’t get any reply. I looked for answers by google, yahoo and bike forums, still can’t find the correct answer. Yesterday I got a message from my US
Surprisingly just half an hour past, leafmotor replied me and asked me to check the bearings. How to check hub motor bearing? Take off two bearings from axis, and use little finger to hold inside of bearing, the other hand to turn bearing, faster, better. If you can hear some noise from bearing that can confirm the problem comes from electric bike motor ‘s bearing. At last, I found there was a bearing was broken. According as the bearing model, I bought two new ones in market and replaced them.
Test electric bike kit wheel in the air, no noise. Brake hub motor wheel, still no noise. Nice, Have sloved it.
I should thank leaf motor that help me and I found fun throught repairing electric bike motor. Now I decide to buy leaf ‘s electric bike kit if I have need and will recommend my friends to order leafmotor’s electric bike motor, bike kit…
Though I haven’t ordered any goods from leafmotor by now. But they are very professional, has best service and believe they have high quality products.
Hub motor, electric bike motor, electric bike kit supplier: Leaf Motor Technology Co.,Ltd
Website:https://www.leafmotor.com
2012年3月21日星期三
power on the electric bike hub motor was gone
Electric bike hub motor kit was gone, how to solve it?
Received my electric bike kit .Product list:
1.26” 36V 250W front brushless geared hub motor wheel
2.36V 6-MOSFET brushless motor controller working with LCD(display speed,mileage,battery gauge..)
3.standard black twist throttle with battery gauge
4.brake lever with low voltage to brake
5.three button-ON/OFF switches that are used for control front&rear lights,cruise,horn…
Check rim whether in the middle of fork and the direction of hub motor runs.Then I have installed everything on my bicycle according as instruction manual and the electric bike kit worked fine.
I was running e-bike about 25km and then I stopped the electric bike motor . Charged the electric bike battery because I was staying there for some hours. Started on the way home and after some heavy hills (about 3 km)it was completely dead. The electric bike kit system was running like normal up to this, but suddenly all power on the electric bike motor wheel was gone.
Those three led lights on twist throttle for electric bike battery were still lit. I tried to turn e-bike off and on again, but same result.
Today the electric bike kit is still dead.
Do you have any idea? Measured 0,1 Ohm between the electric bike motor(hub motor phase wire: yellow, green, blue).Infinity between hub motor cable and hub motor cover. So it does not look like it is burned. The electric bike motor controller has 41,8 Volt input.
Measure the hub motor hall sensor:
Red, black, yellow, blue, green wires.
1.The voltage between red and black is 4.5V;
2.The voltage between yellow and black is 4.2V or 0V,(When use hand to turn hub motor, the voltage will change from 0~4.5V~0~4.5V)
3.The voltage between blue and black is 0.2V; (When use hand to turn hub motor, the voltage could not change)
4.The voltage between green and black is 0.1V. (When use hand to turn hub motor, the voltage could not change)
From above test data, I doubt there were two hall sensor inside the electric bike motor that were broken.
Electric bike hub motor kit was gone, how to solve it?
Hub motor, electric bike motor, electric bike kit supplier: Leaf Motor Technology Co., Ltd
Website:https://www.leafmotor.com
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