Author Archives: leafmotor - Page 24

missing thread of hub motor shaft

Posted by on March 31, 2025 Comments Off on missing thread of hub motor shaft

It took a little work since spacing was tight, but I get the hub motor wheel inside of my forks. When I went to put the nuts on the axle, I saw that the bolt on the wired side is cracked. It is missing almost all of its thread which means I cannot but the nut on to hold the wheel in place. Essentially, I cannot use it at all. Please see the picture of the cracked bolt.

I was wondering if you know how I am able to repair this hub motor ‘s shaft or if I can somehow get some help on this? I spent a lot to get it all here and it is a little upsetting that a small chip is preventing me from using it at all. I’m not asking for a whole new electric hub motor wheel to be sent, just hoping I can get this bike conversion kit up and hub motor running. Please advise.

If possible, add some washers,then can solve it.

Do it as below:
Disconnect that white big plug,then can take off screw nut and add some washers into.
*. Look for a pin
*. There are five wires in this white big plug
*. Press each wire’ s pin, then the pin will out of white big plug.

I had thought I got bike conversion kit to work but there just is not enough room to to secure the nut properly. Please let me know what will be the best way to have this resolved. Sorry for the inconvenience on this.

Add washer or torque arm or lock washer.

BMX 20 inch 48V 1500W rear hub motor electric bike conversion kit

Posted by on March 31, 2025 Comments Off on BMX 20 inch 48V 1500W rear hub motor electric bike conversion kit

BMX 20 inch 48V 1500W rear hub motor electric bike conversion kit

More info about this 20 inch BMX motor kit

Main Features:
>. Rim A: 20 inch double wall Alloy (Rim Fit For: 20 × 1.5″ / 1.75″ tire)
>. Spoke: Silver 12 gauge / 68mm Length × 36 pcs

>. Rim B: 20 inch double wall Alloy (Rim Fit For: 20 × 1.95″ / 2.0″ ~ 2.5″ tire)
>. Spoke: Black 12 gauge / 72mm Length × 36 pcs

>. Engine: Bldc hub motor
>>. Voltage: 48V
>>. Power: 1500W
>>. Efficiency: 90.5%
>>. Max speed: 34.2mph
>>. Mechanical brake: V
>>. Sprocket: single speed freewheel
>>. Cable location: shaft end, Right
>>. Cable length:150cm / 60″
>>. Install: spacing of 110mm rear fork
>>. Noise: < 60 db >>. Surface: Black painted

>. Driver: brushless controller
>>. MOSFET: 12 PCS
>>. With LCD: YES
>>. Rated Voltage: DC 48 Volts
>>. Min. Voltage: DC 40 ± 0.5 V
>>. Rated power: 1500 Watts
>>. Casing material: aluminium
>>. Maximum Current: 40 A ± 2 Amps
>>. Thermal: aluminum shell and the substrate
>>. 3 phase 120° brushless motor
>>. Operating Conditions: -20~45 °C
>>. Waterproof design
>>. Size: 171 mm L × 82 mm W × 42 mm H

With LCD, More function:
* Cruise — Green button Control (While motor is working,press green button one time,it will be “CRUISE” – running as the same speed)
* Reverse — Yellow button Control (“Left side & mid / forward — “Right side / backward”)
* Kmh / mph
* Max speed ( 0 ~ 72 kmh )
* Pedal assist ( 1 – 5 )
* …

Package Content:
1 x BMX 20 inch 48V 1500W rear hub motor wheel (Fit for 110mm rear dropout)
1 x 48V 1500W 12-MOSFET motor controller
1 x LCD
1 x Twist throttle — Cable length: 1500mm
1 x Brake levers — Cable length: 1500mm
1 x Three button switches ( control cruise.. ) — Cable length: 1500mm
1 x Pedal assist — Cable length: 900mm

Net Weight: 11.0 kg
Package Size: 50cm L x 50cm W x 23cm H
Package Type: Cardboard Box

This 20 inch BMX bike kit can work with a 48V battery.

29 inch 48V 1500W rear electric hub motor kit

Posted by on March 31, 2025 Comments Off on 29 inch 48V 1500W rear electric hub motor kit

29 inch 48V 1500W rear electric hub motor kit

More info about this 29 inch hub motor kit

Main Features:
>. Rim: 29 inch double wall Alloy (Rim Fit For: 29 x 1.95″ / 2.0″ ~ 2.5″ tire)
>. Spoke: Black color 12 gauge / 189mm Length × 36 pcs
>. Default: Black spokes
>. Optional: Silver spokes — Please leave message.

>. Engine: Bldc electric hub motor
>>. Voltage: 48V
>>. Power: 1500W
>>. Efficiency: 90.5%
>>. Max speed: 72.4 kmh — 44.9 mph Default (Free customization other speeds: 35mph, 30mph, 25mph, 20mph, 15mph…please leave message)
>>. Mechanical brake: Disk or V
>>. Sprocket: Freewheel or Cassette – space for single speed..6 speed or max 7 speed
>>. Cable location: shaft end, LEFT
>>. Cable length:100cm / 40″ — Update “3mm phase wires” & “Newest version hub”
>>. Install: spacing of Min 135mm to Max 155mm fork
>>. Noise: < 60 db >>. Surface: Black painted

>. Driver: Brushless motor controller
Default: Heat Shrink Bullet Crimp Female Male Wire Connectors Electrical Terminals for battery plug.(Leave message Optional: XT-60)
>>. MOSFET: 12 PCS
>>. With LCD: YES
>>. Rated Voltage: DC 48 Volts
>>. Min. Voltage: DC 40 ± 0.5 V
>>. Rated power: 1500 Watts
>>. Casing material: aluminum
>>. Maximum Current: 40 A ± 1 Amps
>>. Thermal: aluminum shell and the substrate
>>. 3 phase 120° brushless motor
>>. Operating Conditions: -20~45 °C
>>. Waterproof design
>>. Size: 171 mm L × 82 mm W × 42 mm H

With LCD, More Function:
* Cruise — Green button Control (While motor is working,press green button one time,it will be “CRUISE” – running as the same speed)
* Reverse — Yellow button Control (“Left side & mid / forward — “Right side / backwards”)
* Kmh / mph
* Pedal assist ( 0 – 5 )
* …

Package Content:
1 x 29 inch 48V 1500W rear hub motor wheel
1 x 48V 1500W 12-MOSFET motor controller
1 x LCD – Cable length: 1500mm
1 x Twist throttle — Cable length: 1500mm
1 x Brake levers — Cable length: 1500mm
1 x Three button switches ( control cruise .. ) — Cable length: 1500mm
1 x Pedal assist — Cable length: 900mm

Net Weight: 11.8 kg
Package Size: 66cm L x 66cm W x 25cm H
Package Type: Cardboard Box

29 inch bike motor kit can work with a 48V battery.

24 inch 48V 52V 1000W rear hub motor bike conversion kit

Posted by on March 31, 2025 Comments Off on 24 inch 48V 52V 1000W rear hub motor bike conversion kit

24 inch 48V 52V 1000W rear hub motor – bike conversion kit

More info about this 24 inch hub motor kit

This 24 inch bike motor 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. Saving 10% of electricity, Improve the efficiency of 8% With The Newest Materials Steel Rotor.

Main Features:
>. Rim A: 24 inch double wall Alloy (Rim Fit For: 24 × 1.5″ / 1.75″ tire)
>. Spoke: Black 12 gauge / 130mm Length × 36 pcs

>. Rim B: 24 inch double wall Alloy (Rim Fit For: 24 × 1.95″ / 2.0″ ~ 2.5″ tire)
>. Spoke: Black 12 gauge / 135mm Length × 36 pcs

>. Engine: Bldc hub motor
>>. Voltage: 48V / 52V
>>. Power: 1000W
>>. Efficiency: 90.5%
>>. Max speed: 80.1 kmh — 50.3 mph Default (Optional other speed: 35mph or 25mph,15mph…please leave message)
>>. Mechanical brake: Disk or V
>>. Freewheel / Cassette: space for single speed… 6 speed or max 7 speed Default: Fit for Screw on Sprocket (If install Cassette Sprocket,please leave message)
>>. Cable location: shaft end, LEFT
>>. Cable length:100cm / 40″
>>. Install: spacing of 135mm fork
>>. Noise: < 60 db >>. Surface: Black painted

>. Driver: brushless controller
>>. MOSFET: 12 PCS
>>. With LCD: YES
>>. Rated Voltage: DC 48 / 52 Volts
>>. Min. Voltage: DC 40 ± 0.5 V
>>. Rated power: 1000 Watts
>>. Casing material: aluminium
>>. Maximum Current: 26 A ± 1 Amps
>>. Thermal: aluminum shell and the substrate
>>. 3 phase 120° brushless motor
>>. Operating Conditions: -20~45 °C
>>. Waterproof design
>>. Size: 105 mm L × 72 mm W × 38 mm H

With LCD, More Function:
* Cruise
* Forward & Backward (Optional)
* Kmh & mph (Optional)
* Battery gauge
* Throttle speeds ( 0 – 5 ) — “0” is off throttle. “1” is the slowest. “5” is the fastest.
* Pedal assist speed ( 0 – 5 ) — “0” is off pedal assist. “1 ~ 5” is the fastest. ONLY one max speed. If hope pedal with 5 kinds of max speeds, please choose the other controller of ours. Please click below link:
https://www.leafbike.com/products/diy-bike-conversion-kit/24-inch-48v-1000w-rear-hub-motor-kit-1548.html
* …

Package Content:
1 x 24 inch 48V / 52V 1000W rear hub motor wheel
1 x 48V / 52V 1000W 12-MOSFET motor controller
1 x LCD
1 x Twist throttle
1 x Brake levers
1 x Three button switches ( control cruise .. )
1 x Pedal assist

Net Weight: 10.7 kg / 23.5 lbs
Package Size: 56cm L x 56cm W x 25cm H
Package Type: Cardboard Box

* This 24 inch bike motor kit system can handle with a 48V or 52V battery.

26 inch 48V 52V 1500W front hub motor bike conversion kit

Posted by on March 31, 2025 Comments Off on 26 inch 48V 52V 1500W front hub motor bike conversion kit

26 inch 48V 52V 1500W front hub motor bike conversion kit

Detail info about this 26 inch hub motor kit

Main Features:
. Rim A: 26 inch double wall Alloy Rim Fit For: 26 × 1.5″ / 1.75″ tire
. Spoke: Silver 12 gauge / 154mm Length × 36 pcs

. Rim B: 26 inch double wall Alloy Rim Fit For: 26 × 1.95″ / 2.0″ ~ 2.5″ tire
. Spoke: Black 12 gauge / 159mm Length × 36 pcs

. Engine: Bldc hub motor
. Voltage: 48V / 52V
. Power: 1500W
. Efficiency: 90.5%
. Max speed: 69.6 kmh — 42.9 mph Default Free customization other speeds: 35mph or 30mph, 25mph, 20mph, 15mph…
. Mechanical brake: V
. Cable location: shaft end, LEFT
. Cable length:150cm / 60″
. Install: spacing of 100mm fork
. Noise: 60 db
. Surface: Black painted

. Driver: brushless controller
. MOSFET: 18 PCS
. With LCD: YES
. Rated Voltage: DC 48 / 52 Volts
. Min. Voltage: DC 40 ± 0.5 V
. Rated power: 1500 Watts
. Casing material: aluminum
. Maximum Current: 40 A ± 1 Amps
. Thermal: aluminum shell and the substrate
. 3 phase 120° brushless motor
. Operating Conditions: -20~45 °C
. Waterproof design
. Size: 155 mm L × 72 mm W × 38 mm H

With LCD, More Function:
* Cruise
* Reverse
* Kmh / mph
* Speeds 0 – 5 “0” is off. “1” is the slowest speed. “5” is the fastest speed.
* …

Package Content:
1 x 26 inch 48V / 52V 1500W front hub motor wheel
1 x 48V / 52V 1500W 18-MOSFET motor controller
1 x LCD
1 x Twist throttle — Cable length: 1500mm
1 x Brake levers — Cable length: 1500mm
1 x Three button switches control cruise.. — Cable length: 1500mm
1 x Pedal assist — Cable length: 900mm

Net Weight: 25.6 lb
Package Size: 62cm L × 62cm W × 25cm H
Package Type: Cardboard Box

This 26 inch bike motor kit can work with a 48V or 52V battery.

electric hub motor power cut out and nothing powers up

Posted by on March 31, 2025 Comments Off on electric hub motor power cut out and nothing powers up

Did you ride it or never ride your electric bike?
1. If never ride,please check if has “-O-“ on the top/middle of LCD screen.. if have, just make brake levers be back or disconnect brake lever’s plug.. then “-O-“ will off, throttle will work.
2. If have ridden 1-2 times,suddenly hub motor Not work.. please smell electric bike motor controller,if has smell from electric bike motor controller.

3. Also, disconnect throttle,brake lever’s plugs from electric motor controller, always press “down” button from LCD, if LCD screen display a “walk person”, aslo hub motor works as walk speed.

This may have helped a little since the hub motor wheel is spinning smooth again, but the unit will still not turn on. Twisting the throttle still does not spin the wheel and the LCD screen still does not power on.

I saw that you left a post on your website about using a volt meter to test the electric bike battery, hub motor, and bike motor controller. I can use mine to test these to help see where the issue might be.

I have not rode it, but the LCD and hub motor only ever turned on once. As soon as I spun the throttle, everything shut off. The LCD does not turn on at all.

I think I sent this video before which shows the wheel slightly spinning, then it just stops. It has not turned.

But right before I did this, the hub motor wheel did spin for a longer time, but the bike motor wheel did not spin smoothly. Then when I tried to show you what was happening in the video, all of the power cut out and nothing powers up.

I used the voltmeter and connected it to the black and red wire from the battery, it says 53V as expected.

Question about 26 inch 36v 750w rear hub motor – bike conversion kit

Posted by on March 31, 2025 Comments Off on Question about 26 inch 36v 750w rear hub motor – bike conversion kit

Question about 26 inch 36v 750w rear hub motor bike conversion kit
1. Is the 750 watt hub motor good bike conversion kit for hill climbing? If not what would you recommend?
2. Is the electric bike motor controller current limit set to keep from burning out the hub motor when loaded?
3. I see the hub motor spec sheet is quite old 2013. Is there an up to date one?
4. What is the full old current of the motor at rated N-M load or torque?
5. Any service places for your parts in the US?
6. What size electric bike battery is recommended for your motor and controller? 36v 15ah?

1.We can make hub motor with low speed,will good for hill up.
2.Hub motor controller max 26A,so that electric bike motor max 26A
3,4.Only tell us max speed,we can customize motor…lower speed,stronger torque
5.no service place now
6.recommend 36v 15ah or more ah

Yes, I would like a lower rpm hub motor for hill up if the cost of the bike conversion kit does not change. Maybe 25 mile hour max speed flat ground or about 311 RPM. What would you recommend? What do you have that is close to that?
I need to order shortly to not miss the special on shipping that is coming to an end on Dec 28th.

Yes.We have.
When you order,only leave message: 25mph or about 311 RPM.
Then we can make this hub motor as your message.

Would it be possible to get the hub motor data for this different motor like you have on your other motors? I really like that data as I can see what the electric bike motor is capable of.

I don’t understand this phrase “Mechanical brake: Default Disk or V (If need to install drum brake,please tell us in advance)

I have not heard of drum brakes on a bicycle. I don’t have disk brakes right now but would prefer the motor be capable of adding that even though I have V brakes on the bike right now. So what should I ask for?

I forgot to add that I don’t want a geared 26 inch electric bike motor wheel. the gears are plastic and won’t last long on the hills. I hope that does not cause a problem.

question about 18 inch rear hub motor

Posted by on March 31, 2025 Comments Off on question about 18 inch rear hub motor

Regarding your product 18 inch rear dc hub motor for electric scooter Model:HBL-18″R 36V 750W / 48V 1000W
Is says in product details that “This rear hub motor can be mounted disk brake that is fit for standard 135mm frame fork”
My electric scooter motor fork size is measured to be around 177mm, please see attached picture. Can this hub motor be mounted on to my frame, or is the size incorrect?

This kind of 18 inch hub motor isn’t fit for you.
Our other Motorcycle motor or snow fat bike motor are fit for your the spacing of 177mm fork.
Please tell us your tire size.(There is some words on tire)
Then we will check if have hub motor fit for you.

My current electric scooter motor hub wheel fits a tire size of 18″ by 2.5″ (or 3″)
My battery is currently 48v and the bike motor controller outputs about 22-23 amps max. I’m trying to find a 1000 watt hub motor that can potentially reach a speed of 42-50 km/h if possible.

I am interested in buying your electric hub motor.
Here is a picture below of my current disk brakes- will these be able to fit on your hub motor?
Also what would the cost be for just the hub motor? I don’t need all the extra accessories or controller included with the conversion kit.

product idea for your electric bike motor kit

Posted by on March 23, 2025 Comments Off on product idea for your electric bike motor kit

I am a musician and I use a cart like you see below all the time to carry my equipment to shows.
In many cases I have to push this cart very far and many times up hill to play at various shows.
I want to add an electric bike motor to this to help assist pushing 400lbs plus up hills.

If you have any ideas for a hub motor kit to modify a cart like this I would love to hear about it. I am a mechanical engineer and have been looking at various solutions but since you are in the business I thought I would ask you what you think?

We recommend 48v 800w 10 inch hub motor kit. It’s fit for your cart.
Main Features:
. Tire: 10 × 4.00 – 6
. Engine: Bldc hub motor
. Voltage: 48V
. Power: 800W
. Efficiency: 86%
. Max speed: 50 kmh / 30mph (No load)
. Mechanical brake: Disk
. Cable location: shaft end , Right
. Cable length:100cm / 40″
. Install: spacing of 150mm fork ( > 150mm)
. Noise: < 60 db . Surface: Bright silver . Driver: brushless motor controller . MOSFET: 12 PCS . With LCD: YES . Rated Voltage: DC 48 Volts . Min. Voltage: DC 40 ± 0.5 V . Rated power: 1000 Watts . Casing material: aluminium . Maximum Current: 26 A ± 1 Amps . Thermal: aluminum shell and the substrate . 3 phase 120° brushless motor . Operating Conditions: -20~45 °C . Waterproof design . Size: 171 mm L × 82 mm W × 42 mm H Updated LCD , More Function: * Cruise -- Green switch control it * Forward & Rackward (Optional) -- Black switch control it * Regen brake -- Red switch control it * Kmh & mph (Optional) * Set Max speed ( 0 ~ 72 kmh / 45 mph ) * Pedal assist ( 1 - 5 ) * Temperature * Motor power * Timer * Battery gauge * ... 10 inch hub motor kit Package Content: 1 x 48V 800W scooter motor wheel with 10 × 4.00 - 6 tire 1 x 48V 1000W 12-MOSFET motor controller 1 x New Version LCD - 003 ( display speed, mileage, battery gauge.. ) - Updated 1 x Twist throttle -- Cable length: 1500mm 1 x Brake levers -- Cable length: 1500mm 1 x Three button switches ( control cruise, regen brake, reverse .. ) -- Cable length: 1500mm 1 x Pedal assist -- Cable length: 1500mm Net Weight: 8.2kg Package Size: 27cm L × 27cm W × 25cm H / 10.6" L x 10.6" W x 9.8" H If possible, please try this 10 inch electric bike motor kit.

12 inch 48v hub motor for electric scooter

Posted by on March 23, 2025 Comments Off on 12 inch 48v hub motor for electric scooter

We are interested in your 12 inch hub motor kit.
What is the max speed available for this 12 inch electric scooter motor. I can use a low speed hub motor on the back and a high speed motor on the front to compensate for the torque at low speeds.

If last time faster speed hub motor is okay.We can make this electric scooter motor to be faster.（about 20 – 30% faster)

I recently put in an order for two rear hub motors similar to what I have ordered in the past.

Can you make the hub motor fit a standard front fork?

Yes,if not install disk brake on this front motor.
We can make it with the same covers.And hub motor will in the center.
But it will takes about 7 days to customize shaft.
It’s fit for standard 100mm front fork. (90mm fork is also okay)

This front 12 inch hub motor only use V-braking system.
We should check if has correct shaft for this motor in stock.If no,it takes about 7 days to customize this shaft.

Yes,we have 48V 18A controller with LCD for this electric scooter motor. (We don’t have LCD with controller)

Please confirm that the following will be applied to the order.
On center with no disc brake
Please make highest speed – 20 MPH speed using 48 Volt electric bike battery.

Please make sure below 1 & 2
1. the same to past order. It’s rear hub motor. Two side covers are the same with screw thread for spokes & flange — (in the center)
2. would you faster than past ?

I am looking to order more hub motors and would like get updated pricing.
Do you still have the information from past orders?

Yes. We still have 12 inch hub motor.
But we found your order is different from standard motor.
Could you take a picture with your 12 inch motor, front or rear ?
What max speed on 36v or 48v?