Tag Archives: electric-bike-motor - Page 2

Request of info about your hub motors

Posted by on January 15, 2022 Comments Off on Request of info about your hub motors

Q:I’m planning to start a small production of electric vehicles and I’m evaluating your products.
I would like you to clarify the following details:
1) I read the performance data of HBL motor 24V/300W-36V/750W-48V/1000W, are these data referring to the same physical motor ?
2) What are the physical differencies between HBL-36F1 / HBL-36F2 / HBL-48F ? I noticed that the weight is the same, is the gauge of the coil wires and/or the turns number of the coils different for each motor ?
3) Are HBL motors equipped with internal position sensors ?
4) Besides 14/16/18″ can you supply also 20″ aluminium casted rims for HBL motors ?

A:Thank you for you are interested in our electric bike motor.You are very professional.
About the first and the second question,you are right,these performance datas come from the same motor.No difference.
About the third question,HBL is brushless gearless motor with internal hall sensor.
About the fourth question,in past we had this 20″ aluminium casted rims for HBL motors.
Now no body use this 20″ hub motor,so we don’t manufacture this kind of motor.
HBL-36F1/HBL-F2/HBL-48F these three kinds of motor,if they have differences that come from the gauge of the coil wires and/or the turns number of the coils.

BTW,if you hope get other performance about this hub motor,for example:faster,slower,more power at the highest efficiency point.We can customize according as your order.

No differences between hub motor and electric bike motor

Posted by on January 15, 2022 Comments Off on No differences between hub motor and electric bike motor

Q:You wrote me that there are no differences between HBL-36F1/HBL-F2/HBL-48F hub motor, so the different prices listed on your website are just for commercial reasons ?
I’m glad to hear you can supply customized products, is this possible even for small numbers ? (We are starting this type of business and at the beginning we will need just a few pieces).
I really appreciate your hub motors mainly for the technical
specifications provided rarely present for this type of product.
I would be interested in testing the following electric bike motor:
– HBM-Rear (diam.=145mm)
– HBL-Rear (diam.=243mm)
(No rims, no spokes, no custom products at this time)
However I would like to know if disc brakes can be mounted on these
motors and, as I have to make some particular tests, if you can supply both motors with a 12 (or 14) tooth fixed sprocket mounted on (I mean just a single fixed sprocket, not the classic freewheel gear).
A:Our HBM-Rear and HBL-Rear can both be installed disc brake and freewheel are fit for standard 135mm rear fork.
Please review picture”Disk-6in”.Does your Disk brake with this threaded adapter?If have,your disc brake can mounted on our motor.
If you this disc brake doesn’t have this threaded adapter,we will offer you this part.

AC traction bike hub motor

Posted by on January 1, 2022 Comments Off on AC traction bike hub motor

July 21, will service the Shenzhen Metro Line 5 of the urban rail train, in the CSR Zhuzhou Electric Locomotive Co., Ltd. (hereinafter referred to as “CSR bike motor“) success off the assembly line. According to technical personnel, the Shenzhen subway train is the first time the use of domestic market traction electric bike motor, equipped with a CSR Zhuzhou bike hub motor Co., Ltd. successfully developed independently of the traction bike hub motor products. Reportedly, the bike hub motor than similar foreign products, cost 20% less cost.

Construction cost of about 80 percent of foreign imports

CSR bike hub motor propaganda minister Zhu Jianfei told reporters the South, according to a long, high-strength technology validation test, the company’s traction electric bicycle hub motor of the technical indicators and very similar products imported, the cost is equivalent to the latter 80% follow-up maintenance costs only about 50% of the latter.

As a subway train the “heart”, traction bike hub motor is the core technology elements of the train, the train is pushing the cost of acquisition and maintenance of key components. According to the CSR bike hub motor to the source, every subway train by a total of 16 installed traction bike hub motor calculations, the cost of similar imported products equivalent to 80% of the standard means cost savings for each train at least 30 million, saving maintenance cost of $ 1.6 million. The Shenzhen Metro Line 5 quantities of eight trains, the subway operator side in one fell swoop to save the purchase and maintenance cost of more than 15 million yuan.

“China-made new subway excellent traction bike hub motor design, the technical indicators have reached international level of similar products, and by virtue of small size, light weight, excellent insulation properties, etc., more cost-effective than the international product.” CSR bike hub motor Publicity Minister Zhu Jianfei told reporters.

It is understood that the Shenzhen line 5 using Y Q-190-5-type asynchronous traction bike hub motor developed in November last year. “Our bike hub motor to meet the environmental climatic conditions in Shenzhen and lines, power supply and gauge conditions, reached the world advanced technology level.” Zhu Jianfei said. In addition to the quality of clearance, CSR bike hub motor with similar products, compared with a clear price advantage, is expected to slightly better in terms of competition.

Break the international monopoly of imported brands

Since 1984, successfully developed China’s first YQD -300 electric locomotive with AC traction bike hub motor has CSR bike hub motor in the year to promote technological breakthroughs in recent years, metro bike hub motor to speed up the localization process. And Shenzhen Metro Line 5 electric bicycle hub motor of similar products YQ -190-3 type bike hub motor landing in Beijing in December last year Fangshan Line subway. This year, the CSR Zhuzhou bike hub motor to provide traction electric bicycle hub motor project as well as Shanghai Metro Line 1, Shenyang Metro Line 2, Chongqing and Guangzhou Subway Line 6, 1,2,8 subway line.

“This year also includes the first major breakthrough into the European market, Izmir, Turkey to sign the light rail project, and volume manufacturing to 16, which is representative of the South China car bike hub motor bike hub motor subway traction vehicle with the European debut . “CSR bike hub motor to the reporter concerned. In addition, exports of CSR electric bicycle hub motor vehicles to maintain Singapore’s subway project supporting the development of electric bicycle hub motor, has achieved mass production, breaking the foreign giants for high-end metro and light rail traction system monopoly.

According to reports, South car sales this year expected to reach last year’s 2.5 times. And gradually replaced by a single manufacturer to create a combination of physical transformation and investment.

How to disconnect the bldc hub motor for electric bike?

Posted by on January 1, 2022 Comments Off on How to disconnect the bldc hub motor for electric bike?

Spring come,nice days to ride e-bikes.But when you take out of your old e-bike from warehouse and are going to ride it.Suddenly you would find there is strange noise from hub motor .
These days the electric bike motor are brushless gearless and used for electric bike widely.It was made of rotor-winding,magnet,hub,covers,axis,bearings…
If this bike motor has strange noise,generally it’s from rotor-winding rub magnet or the bearing is broken.It’s easy to solve it.The important is to disconnect this electric hub motor.
You should prepare some tools:
1.Hexagon wrench (Necessary)
2.Hammer (Necessary)
3.Screwdriver

Disconnect hub motor Step 1:
Take off nuts and gasket on axis and use hexagon wrench to loose 16 screws.

Step 2:
Make the hub motor stand and cable is bent inside.Left hand hold the hub motor and use hammer to knock the axis.

Step 3:
After some knock,the cover will take off hub.

Step 4:
Use the same way to knock the other axis,the other cover will also take off hub.

Step 5:
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 6:
Check magnet around inside hub,if there is some metallic impurities stick on magnet.Please remove it.If no,but found some friction trace on magnet.Please check around the rotor-winding and remove some glue around the steel.If not,please check the bearing inside the cover.Use a little finger hold inside the bearing,use the other hand to turn cover,faster,better.If you hear some noise.Please replace bearings.

By now,you have solved problem.

26 inch electric hub motor kit for the dropout 160mm fork

Posted by on December 30, 2021 Comments Off on 26 inch electric hub motor kit for the dropout 160mm fork

Q: Are you able to supply a rear hub motor kit wheel (36v @ 500W – 750w) for a rear dropout of 160mm?
I have an existing e-bike that uses a 250w geared rear hub drive on a 26 x 1.95 wheel.
It has a 7 speed gear, standard 160mm disk brake and a bike mount (frame) width of 160mm.
I would be happy to go from a geared (small hub) to the larger electric bike motor kit type.
The existing bike frame is steel (not carbon or an alloy) so I may be able to ‘bend’ the rear forks… (fit).
I have included a PDF diagram (attached) to show the existing rear hub motor fitting size.

A: Yes, we have dropout of 160mm 36V 750W electric bike motor.

Q: With the new Leaf controller and LCD, I know I can limit the maximum output speed of the 750w Direct Drive hub motor to a set (safe) maximum speed for each PAS mode 1 – 5.
With our Australian laws, I want to honor speed and safety – yet have a safe speed and torque (reserved) for hills.
I respect that you have kindly supplied my order with a 320RPM hub motor ( a good choice).
My question is: “Does the max speed by set by LCD / Controller economically limit the maximum current sent to the hub motor”?
I am talking here about battery life with a low speed LCD / Controller setting ‘modulating’ the full power sent to the hub motor.
So if I program the setting to say 25Km/h, then is the torque output effected at speeds less than the given 25Km/h?

A: Yes, if you set max 25kmh by LCD, motor will work less than 25kmh.(You can set max 10kmh,11kmh,12kmh….48kmh,49kmh,50kmh)

1.Press “SW” from LCD. Turn on LCD
2.Press “up” &”down” together for more than 2 seconds in 3 seconds after LCD display – Then “72” will flash.
3.Press “down” or “up” to set any max speed. Press “SW” one time to save. Then “26” will flash. It’s tire size. Don’t set. Still press “SW” one time to save. Then “kmh / mph” will flash. Don’t set. Press “SW” one time to save.
4.At last, press “SW” more than 2 seconds, then will be back.

There is a Three button switch inside parcel.

** Black switch (be Left side / Middle – motor works forward. Be right side, motor works backward/reverse)
** Red switch (Be left side / regen off. Be right side / regen on)
** Green switch ( When motor is working, press this green switch one time. LCD is display C, motor will work as the same speed) – Re-press this green switch one time, or press brake lever, turn throttle to max, motor will stop.

measure electric bike hub motor hall sensors

Posted by on December 30, 2021 Comments Off on measure electric bike hub motor hall sensors

Bike motor controller is fine, they all got 4.9~5.0 from meter reading. We will open and check the hub motor after work. We are more worried about if the electric bike motor itself is damaged.

Could you get the below data:
1. Remove this white biggest plug, power on and measure volt of white biggest from brushless motor controller.
Red, Black, blue, green and yellow
1.Red and black is about 4.9V
2.Blue and black is about 4.9V
3.Green and black is about 4.9V
4.Yellow and black is about 4.9V

If you can get the data, the bldc motor controller is okay.

LCD always display “05 flashing”.
The issue comes from electric bike motor hall.(five wire: red, black, green, blue and yellow)
Could you check this five wires whether through?

This is a instruction about how to disconnect this hub motor.
It takes about 10 minutes to disconnect.

You will find a PCB around the rotor-winding. There are five wires (red, black, green, blue and yellow) are on this PCB.

I removed both panel on hub motor and did a quick test. All the thin wire looks fine. They can go through from both side. But the thick wire connect to enameled wire that I can’t test since they been wrapped up.

If Not flashing. Then it will work.
Could you get below data from electric bike motor hall sensor?

Three are three hall sensors around rotor winding.
For example:
hall 1 Green (pin 1.1 pin 1.2 pin 1.3)
hall 2 Yellow (pin 2.1 pin 2.2 pin 2.3)
hall 3 Blue (pin 3.1 pin 3.2 pin 3.3)

Pin 1.1 ,pin 2.1 and pin 3.1 are connected to the red wire together.
Pin 2.1 ,pin 2.2 and pin 2.3 are connected to the black wire together.
Pin 1.3 is green,pin 2.3 is yellow,pin 3.3 is blue.

Volt meter Red Pin to Pin x.1 black Pin to x.2 (x=1,2,3)You will get below data:
Pin 1.1 and pin 1.2 is about 1.185 (see picture 5)
Pin 2.1 and pin 2.2 is about 1.185
Pin 3.1 and pin 3.2 is about 1.185

Volt meter Red Pin to Pin x.1 black Pin to x.3 (x=1,2,3)You will get below data:
Pin 1.1 and pin 1.3 is about 1.498 (see picture 4)
Pin 2.1 and pin 2.3 is about 1.498
Pin 3.1 and pin 3.3 is about 1.498

Volt meter Red Pin to Pin x.2 black Pin to x.3 (x=1,2,3)You will get below data:
Pin 1.2 and pin 1.3 is about .633 (see picture 6)
Pin 2.2 and pin 2.3 is about .633
Pin 3.2 and pin 3.3 is about .633

Another way to test hall sensor:
Connect all wires, power on.

Measure red, black, green, blue and yellow BLDC motor hall wires
1.Red and black is about 4.9V
2.Black and yellow is about 4.9 or 0V (Please use your hand to turn hub motor, the data will change from 4.9-0V)
3.Black and blue is about 4.9 or 0V (Please use your hand to turn hub motor, the data will change from 4.9-0V)
4.Black and green is about 0V or 4.9V (Please use your hand to turn hub motor, the data will change from 0V-4.9V)

If nothing is changed, this hall was broken.
How about the other black and red wire?
Only black or red wire can’t touch well or not go through, 05 will be always flashing.

18 inch gearless brushless hub motor for electric bike

Posted by on December 30, 2021 Comments Off on 18 inch gearless brushless hub motor for electric bike

I am interested in the 18 inch rear gearless bldc hub motor provided by leaf bike company and I had a few questions about the hub motor.

1) What is the rated torque?
2) What is the maximum torque?
3) How many poles are there in this hub motor?
4) Does it contain any brakes? If so, what type? (Disc/Drum/V-brake)
5) Does it contain hall sensors? If so, How many and what is their description?
6) Most importantly, is this motor a brushless dc motor (BLDC) or a permanent magnet synchronous motor(PMSM)? This greatly affects my choice, as both types are sometimes very close to each other, so I needed verification on what type it was.
7) Does it have a waterproof gradient?
8) Dimensions: I had an issue with the dimensions listed in the description compared to dimensions in the drawing for the motor on Leaf Motor site. I am actually looking for a motor that is around 16 inches, however, I chose the 18 inches because the image for the 18 inches shows the diameter being 372 mm which is equal to around 14.6 inches, which isn’t 16 inches but is very close. The diameter of the electric bike motor is crucial for my wheel choices and so clarifying what the actual diameter of this motor would be very helpful, I can’t risk not being sure of the dimensions as I am currently designing the vehicle and need to be very accurate, and that’s why a professional mechanic is needed specialized in this kind of vehicle, because sometimes people think a person who’s good with cars will be good at bikes too.
9)Does this motor support regenerative braking?
10) What is the back EMF of this motor?
Finally, I would like to apologize if these are too many questions but I am in need of the maximum clarifications I can get to be as precise, so any information you can provide will help me on my quest to find the best. I will be forever grateful for your help.

A:
Please click our new site.
https://www.leafbike.com/products/e-scooter-hub-motor/18-inch-electric-motor/
There is more drawing & performance.

* This 18 inch is fit for 18 * 2.125 or 2.5 tire.
The dia. of this 18 inch is 372mm, it’s fit for 18 inch bike tire.

* 46 pcs magnet, with 3 pcs hall sensor… It’s brushless motor.

48V,1000W, 1500W rear hub motor for 20 inch or 24, 26, 27.5, 700c 28, 29inch

Posted by on December 30, 2021 Comments Off on 48V,1000W, 1500W rear hub motor for 20 inch or 24, 26, 27.5, 700c 28, 29inch

Do you have a more detailed drawing for dimensions of the 48V 1000W,1500W rear hub motor? I am particularly interested in the dimension I marked “A” so I can be sure the brake rotor disc will fit correctly.

The drawing from your web site shows the left side of the hub motor on the right side of the drawing. Also, in the video the hub motor is installed backwards and the rear derailleur is just hanging off the bike on the cable. Very confusing, but eventually I understood that the person who installed your hub motor on the bike put the motor in backwards, with the wire coming out the right side even though your specifications say the wire comes out the left side.

I suggest that you make all of your drawings, pictures, and video consistent left to right, because they are presently mixed up.

Here is an example of a drawing that is correct left versus right and has all the dimensions a bicycle builder needs to be confident the motor will fit the bicycle.

If I order with a free hub to use a cassette is the free hub body replaceable?

Does it look something like this?

Do you have a part number or a link for the replacement free hub and cassette for that motor?

Thank you very much for all the information, I really like this hub motor but I need to make sure it will fit and work well for my bike.

Motor controller with LCD-003 from Leaf Bike

Posted by on December 29, 2021 Comments Off on Motor controller with LCD-003 from Leaf Bike

48V 1000W-1500W-2000W, 36V 250W-500W-750W, 24V 250W Motor controllers with LCD-003 from Leaf Bike are used to drive 8-9-10-12-13-14-16-17-18-20-22-24-26-27.5-700C-28-29er inch hub motor bike wheels.

How to set max speed?
If you feel 20 inch or 24 inch,26 inch, 700c, 28 inch, 29 inch hub motor kit is too fast,please set it to be low speed.
* Press “sw/middle button” from LCD more than 2 seconds,then LCD will display.
* Press “up & down button” together more than 2 sconds until 72 is flashing ( 72 is kmh, if you hope works 20mph / 32kmh, press “down” to be 32)
* Press “sw/middle” button one time to save,then 24 is flashing.. (24 is hub motor wheel size. Don’t set)
* Press “sw/middle” button one time to save,then kmh or mph is flashing..
* Press “sw/middle” button one time to save,then press “sw/middle” button more than 2 seconds until be back.

Turn throttle,motor will work max speed as your setting.

—————
There is a “ 5 or 4 or 3 or 2 or 1 or 0” on the Left side of LCD.
* Be “0” – throttle & pedal assist NOT work.
* Be “1” – throttle works (If install pedal assist, pedal about 3 circels,then can drive motor to work)
* Be “2” – throttle works (If install pedal assist, pedal about 2.5 circels,then can drive motor to work)
* Be “3” – throttle works (If install pedal assist, pedal about 2 circels,then can drive motor to work)
* Be “4” – throttle works (If install pedal assist, pedal about 1.5 circels,then can drive motor to work)
* Be “5” – throttle works (If install pedal assist, pedal about 1 circels,then can drive motor to work)

If NOT install that pedal assist,ONLY use throttle to drive motor. But Should be 1 or 2 or 3 or 4 or 5.(Be 0,turn off throttle)

——————————–
How to use three button switch?
1.We cut off that blue wire.It’s for reverse. If reconnect this blue wire.
This yellow button be left / middle,29 inch bike motor kit works forward. Be right side,hub motor works bacwkard / reverse…

2.Green button is used to control cruise, while electric bike motor is running,also over some speed,example: over 1/3 max speed,at this time,press green button one time,then loose throttle,LCD display “C”,motor will works the same speed. Re-press this green button one time or press brake lever or turn throttle to max, electric bike motor will stop.

3.Red button be up,regen on. Be down,regen off. This regen is not strong.Only while braking with a little regen.

Questions regarding your DIY conversion kits

Posted by on December 29, 2021 Comments Off on Questions regarding your DIY conversion kits

Q:I assume your electric hub motor bike conversion kits are speed limited, consider for example your 250W 36V hub motor bike conversion kits. Usually it seems the speed limit it set to something like 25 kmph, or so.

I building a custom bicycle and I am interested in knowing if this speed limit can be configured to be higher. I guess I am thinking this possibly is the case if one can simply enter a lower wheel size when configuring the controller. Could this be there case, or is there may be some other way to do this using your kit?

Also, are you by any chance the same company as leaf bike? And if so, does this answer also apply to the e-bike conversion kits sold under that name, e.g. their 250 W 24 V conversion kits?

A: Yes, our controller has speed limit.
There is max speed display on our leafbike.com site.
We set LCD as wheel size.For 12inch,14inch,16inch,18inch,20inch,24inch,26inch,27inch,27.5inch,700c,28inch and 29 inch..
For example: our site write: max 70kmh ( You can limit max speed under 70kmh,from min 6kmh to max 70kmh)
our site write: max 24kmh ( You can limit max speed under 24kmh,from min 6kmh to max 24kmh)

Q: Thanks for the info. Just so that I understand correctly, let me ask these questions:

For example, considering your DIY e-bike kit 700c hub motor kit front wheel, Item ID #LBCK700C24250FM”. Our your web-site, says that it is speed limited to 36.1 kmh (actually used to say something like 25 kmh, you increased it?). Though this speed seems sufficient (now) I still wonder if I can modify this speed limit in some way. Say, if I configure the controller to a wheel size smaller than 700c. If that it possible I am thinking the max speed would be increased. Is that something that is user configurable, or it is hard coded into the controller that it is for a 700c wheel?

Is it also maybe the case that the controller that one get if one buys, say , this kit also works with some more powerful motors? But maybe it is limited to the operating voltage of 24 V?

Do you have recommendations as to if one should go with, say, a 24V or a 36V system?

Finally, I note on the web-site I list above, seems that you are showing the motor performance table for a 36V motor. Could it be that it should show the performance of the attached motor data for a 24V motor?

Just another question here.

For your 36V 250W front wheel DIY kit, the max speed is listed as 26.3 kmh or 16.4 mph. This seems that it can be a bit limiting for some jurisdictions. Is it maybe the case that you have increased this max speed also to 36.1 kmh as listed for the 24V version? And, also, here, can I configure it for a lower bike speed to make it go faster or is there some other way to increase this speed limit?

By the way, I see the advantage with the 36 V systems. You get more watt-hours in your battery. Seems like better choice for my use case.