Category Archives: bike conversion kit - Page 2

20 inch 48v 52v front hub motor diy bike conversion kits question

Q: Hello! I have been viewing your various 20″ 48v/52v front hub motor diy bike conversion kits and I have a couple of questions.

1) Is there a way to install a disc brake rotor somehow next to the hub motor and still function properly? If so, can you tell me maximum rotor size allowed for these kits?

2) What type of battery would you recommend for a 48v/52v front hub motor kit like this?

Thank you very much for your time and assistance regarding this matter. 

A: 1.) Can install a disk on this 20 inch 1000w or 1500w front hub motor… but the front dropout should be 105mm or 110mm..
    Standard front dropout is about 100mm..

So if the dropout can’t be larger, can’t use disk on front motor.

2.) We recommend 52v 20ah lithium battery.
https://www.leafbike.com/products/lithium-battery/52v-20ah-1500w-electric-bike-battery-triangle-battery-1225.html

Q: Thank you very much for your quick response. Do you know what the maximum disc brake rotor size I would be allowed to install next to motor? Thank you again.

A: We installed max 160mm

Below picture. 
The dia. of two holes for disk is 44m…
If your 180mm 203mm,  aslo 44mm… You can install 180mm, 203mm disk

Q:
I forgot to ask you one last thing before making a final decision on a front hub motor kit. I know you said you are not able to ship the recommended 52v 20ah battery to Japan, but can you recommend a charger to go with this type of battery? Thank you again for all of your help and assistance. 

I just noticed the charger that comes with the 52v 20ah li battery, so I can look for battery/charger here in Japan. But, do you have in stock just the frame bag for holding this type of battery?

Not sure it’s 27.5 or 29 inch bike conversion kit

Q: Good evening. I was referred to your shop from someone on a forum, and I’m hoping you can help me. I’m looking to convert my Trail 8 bike to a rear-wheel electric. I have very little understanding of mechanics, bike parts, and measurements so finding a kit that is the right size for my bike has been very difficult. I am confident that I can install the kit if I have the right one. If you don’t mind could you please have a look at my bike’s specifications and tell me which specific kit will fit my bike? I’m very motivated to purchase one. Thank you! 

A: Not sure it’s 27.5″ or 29 inch? (27.5 inch rim is smaller than 29 inch rim)

If tire size is 29 x 2.25″ — All of our 29 inch hub motor kits are fit for this tire.

How to choose bike conversion kit?
1. Check tire size, there is some words on tire (from picture,we can’t find tire size)
For example: if there is  29 x 2.25″

29 inch wheel size, 2.25″ is tire width…
All of our 29 inch hub motor fit for this 29 x 2.25″ tire

2. check front or rear fork width
For example: the dropout of this bike is 135mm (can’t find this info on your link)
All of our rear hub motor kits with max 7 speed fit for this 135mm rear dropout
(If you hope install 8 speed,9 speed.. the dropout should be a little larger than 135mm, if fork dropout can be a little large, to be 140mm, install 8 speed,9 speed on our rear hub motor is no problem)

Generally just 1 & 2 both fit for.. mount this hub motor kit to your bike is no problem.

(Nearly all of this kind bike’s rear dropout is 135mm or a little larger.. install is no problem)

21 speed is okay.
Front is 3 speed, rear is 7 speed..

Our 29 inch rear hub motor with 7 speed is fit for standard 135mm dropout.

(Some bike rear has 8 speed or 9 speed..)

Q: Ah okay I think I get it now. Sorry for my questions this is out of my knowledge area. So it looks like https://www.leafbike.com/products/diy-bike-conversion-kit/29-inch-48v-52v-1500w-rear-wheel-electric-hub-motor-kit-1065.html is going to be the one for me. I’ll make sure on that fork size tomorrow and check with my bike shop if they think the dropouts are sturdy enough. Just a couple more questions – do you have a 48V battery recommendation? And there an installation guide with the kit? 

16 inch 24V 250W front hub motor – electric bike kit

Q: I have an old 16 inch bike that I would like to add electric assist on the front wheel (The rear has a complex hub/cassette that I don’t want to mess with). The hub specs seem like they would work with this kind of bike but I have some questions. Will the added weight of a front hub motor put strain on the headset? Will the hub work with the compact v-brakes that came with the bike or will I need to upgrade? Will it work with my 60 psi tires? Would I be able to power my hub dynamo lights with the battery? I am not looking for anything powerful–just something to help me up hills.
Note the attached picture is before I upgraded to long swept back handlebars which should give me enough room for any controllers and throttles.

A: This 16 inch hub motor kit 24v 250w front is fit for the spacing of 100mm fork. 
* if possible, just measure the spacing of your fork, check if 100mm? -If 100mm, no any problem. Fit for your bike, also fit for your V brake, also your fork support this motor.
This bike motor is not heavy. Works with your fork. This 16 inch rim is fit for 16 x 1.5″ or 16 x 1.75 or 16 x 1.95″ tire.
But we recommend 36v 250w or 48v 250w or 48v 500w (24v 250w is not strong)

Q:  I am just researching right now. If 250W is too weak, will the next wattage size help me up the hill? Would you recommend high or low pressure tires (I prefer low pressure)? Does the price include the battery?

A: 48V 250W or 48V 500W is okay.
If strongest, 48v 1500w low speed motor.
Not include battery.

Q: Would the 36v 250w bike motor be strong enough to boost me up hills and what battery pack would work with it? Can motor batteries be tapped to power lights originally powered from a hub dynamo?

A: 36v 250w bike motor is stronger than 24v 250w
But still no good for up hills, just work for flat road.
Also, 48v 250w bike motor is just better to work for flat road, not good for up hill.
If up hill, should 16 inch 48V 1000W, 1500W bike motor.

Q: I would still be peddling the bike with motor assist rather than relying on the motor alone. I currently don’t want too powerful a motor as my current rim brakes may not be strong enough. Also this would be the first time I rode any kind of electrified bike so I need an “entry level” set up.
One other thing, how well does the motor hold up against heat, cold and getting wet as in encountering the occasional puddle? It can get really hot, cold and wet where I live.

26 inch 2000W HUB SNOW BIKE KIT – FOR 190MM DROPOUT

Q: Could you tell me the spec of the most powerful hub motor you sell in the 26 inch fat bike kit that will fit a 190mm rear dropout please?
I am looking to buy the hub motor pre-laced in a rim, can you also advise on what battery to go with it.

A: 190mm dropout..
We can make 26 inch 48V 1000w or 26 inch 48V 1500w hub motor
We recommend 48v or 52v 20ah battery.

Q: Thanks for the reply. Can you quote me for a 1500w direct drive hub wound for torque on a 26″ 80mm rim with cassette and place for rim brake with 190mm dropout please?
Here is the bike I want to install it on

A:We have 26 inch 80mm rim
but don’t have cassette version shaft for 190mm hub motor.
ONLY shaft for freewheel sprocket.

Q:Freewheel will be fine.How much to order please?

A:Click below site.  Check out… check out..
choose your country, will get shipping cost & total price.
Leave message: 190mm 26 inch 80mm
(190mm is very important, or send an email to us after paid, need 190mm shaft,  default: 170mm )
https://www.leafbike.com/products/beach-snow-fat-bike-kit/26-inch-48v-52v-1500w-rear-hub-motor-beach-snow-fat-tire-bike-conversion-kit-1081.html

Q:One more question do you have different windings available? Bike will be climbing lots of hills.

A:Yes, we have different windings available..
Just tell us max speed, we can make windings as your max speed.
We can make fastest: 22 x 3T just for e-motorcycle
Also, can make 16 x 4T – fast
13 x 5T
11 x 6T – popular
9 x 7T
8 x 8T – stronger and not too slow
7 x 9T
6 x 11T — slow
5 x 13T
4 x 16T 

Q:Which winding works well for long hill climbing without overheating?

A: 11 x 6T is not too slow,also strong.
Don’t worry motor overheating.
ONLY make sure controller is not overheating.. motor will not overheating..
** Don’t pack controller inside bag.Had better to hold it on the frame directly.It’s easy to cool controller in Summer.
** There pairs of heavy yellow,blue,green phase wires must connected well. Had better to use electrical tape winding.

Q: I saw you have a 2000w hub motor model fat bike wheel how fast will that go?
I think that may be my last question
Sorry also does hub motor have a temp sensor or can you add one please?
Hi saw this new model and had questions:
https://www.leafbike.com/products/beach-snow-fat-bike-kit/26-inch-60v-2000w-rear-hub-motor-beach-snow-fat-tire-bike-conversion-kit-1231.html

Your 26 inch 2000w snow bike kits says it can come in 190mm rear dropout, is that correct?

How many amps is the controller?

Can you supply as a thumb throttle instead of twist throttle?

Does motor come mounted inside the wheel?

What windings can you offer on this 2000w version?

18 inch 48V 52V 1000W rear hub motor – electric bike kit

I’m interested in your 18 inch hub motor electric bike conversion kit I was curious is this a right hand drive or left hand drive ? Does this come with a sprocket, and if so how
Many teeth does it have ? Is this strictly pedal assist or will the motor engage while pedals are at a stand still?
Do you have a 1000watt hub motor for the drum brake wheel? 
Do you make 16inch electric front wheels for surrey bikes ?  The axles seems slightly different then your standard bicycle front wheel 
Do you have a diagram as to how the drum brake connects to the wheel ? 
I see that’s a separate drum break to purchase. How does the 1000watt wheel attach the drum break? Is there a mounting system on the wheel ?
The actual drum break 1000watt wheel comes with everything needed correct ? 
I would rather purchase from you if possible since our communication has been the best. Can you work with me on the price of the wheel ? 
Are the drum break to the wheel universal?  May I ask why the drum brake isn’t included with the wheel?
What is the return policy in case I have issues with it fitting my bike or performing ? 
I am now in the process of ordering the electric wheel kit for our surrey bike. Before ordering I was curious do you have the updated lcd screen for this model ? 
It would be the same wheel, the rear 18inch wheel conversion with drum break. 
Is there any documents showing the way the lcd screens look? Is one better then the other ?
 I can choose a colored lcd screen for the controller as well correct? 
Before I make a purchase I was going to ask do you offer a thumb driven accelerator switch instead of the throttle handle like a dirt bike. 
Can you send me a picture of what it looks like please. 
I was asking if I could see a picture of the thumb throttle as well
One more question about your thumb throttle. Do you have a thumb throttle that does not have the handle attached ? I’m trying to secure the thumb throttle to a sealed bar so I need it to open and latch over the bar to secure it instead of slipping over the end of a bar like a bike handle grip. If this makes sense? 
Sounds good. If I were to want this one how would I express in my order I would
Prefer this thumb throttle ?

Question on wiring- 1500w rear hub motor kit

I have installed my hub motor kit on my bike and think IT IS GREAT!!!!
I have a question about a wire from the “cruise control-regenerative brake” controller on the handle bar.
The connection to the control unit had 4 wires one of which……the blue wire…was cut.
I assumed that it needed to be fixed the two blue wires together.
I bought two hub motor kits and we have just finished installing the kit on my friends bike and this blue wire is also not connected…..so I am wondering if it is supposed to be disconnected……should I solder this blue wire of cut the blue wire on my bike …..
Again….I think your hub motor kits are great! I have referred my friends to your site and I hope you receive some orders from them.

How to use three button switch?
1.We cut off that blue or yellow wire.It’s for reverse/backward.This function is very dangerous for e-bike. If for e-tricycle,hope this reverse function,just re-connect this yellow wire.
(We cut off yellow wire.. so no reverse/backwards function for e-bike. If install motor on tricycle, also need this reverse function,please re-connect this yellow wire. Reverse works)
 
This yellow or black button be left / middle,motor works forward. Be right side,motor works backwards / reverse… (Cut off blue wire,No reverse function)

How to set max speed?
If you feel motor 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 seconds 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 20 is flashing.. (20 is 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 circles,then can drive motor to work)
* Be “2” – throttle works (If install pedal assist, pedal about 2.5 circles,then can drive motor to work)
* Be “3” – throttle works (If install pedal assist, pedal about 2 circles,then can drive motor to work)
* Be “4” – throttle works (If install pedal assist, pedal about 1.5 circles,then can drive motor to work)
* Be “5” – throttle works (If install pedal assist, pedal about 1 circles,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 yellow wire.It’s for reverse/backward.This function is very dangerous for e-bike. If for e-tricycle,hope this reverse function,just re-connect this yellow wire.
(We cut off yellow wire.. so no reverse/backwards function for e-bike. If install motor on tricycle, also need this reverse function,please re-connect this yellow wire. Reverse works)
 
This yellow button be left / middle,motor works forward. Be right side,motor works backward / reverse… (Cut off blue wire,No reverse function)

2.Green button is used to control cruise, while 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,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.
 
1.Be careful:
Heavy Red Wire from controller should be connected to → Red Wire + (48V or 52V battery positive)
Heavy Black Wire should be connected to → Black wire – (48V or 52V battery negative)
 
Power on battery. Press “sw” middle button more than 2 seconds until LCD be ON. Turn throttle,motor will work.
If Not work,please check below:
1. if LCD display “-O-“, the system is braking,cut off motor power.. please make brake levers’ metal ring be back or disconnect brake lever’s plug, then “-O-“ off, turn throttle,motor works.
2. if no “-O-“, still not work,please check three pair of heavy phase yellow,blue,green wires if connected well.

1500W Leaf Motor with 20″ x 4″ wide “Fat Bike” wheel

Q:Do you sale 1500w or higher hub motor laced into wheel that is 20” diameter by 4” wide for fat tire bike? If so, what are the dropout width options for axle? Can axle dropout width be 150mm wide or even wider? I have a bike frame with 170mm dropout width. I can use torque arms and spacers to fill some of this space, but not too much.

If available please quote price for:
~1500w newest model hub motor with 20” diameter x 4” width wheel (pre-laced service)
~Need motor/wheel laced with 1 cross pattern. Radial lacing is acceptable but not preferred. Black spokes preferred.
~Need 150mm or wider axle dropout width.
~Need turn count which contains HIGHEST AMOUNT COOPER FILL
~Need temp sensor pre-installed in bike motor
~Need single speed freewheel (11 or 12 tooth preferred) pre-installed
~Need SHIPPING to U.S

Also, can you sale with 750W sticker or engrave on bike motor?

A: We can make this 20 * 4 wide Fat Bike wheel.
Please click below site. This is our 20 inch 48V 1000w Fat bike wheel – It’s 20 inch bike conversion kit for fat snow bike.

We also can make 1500w bike motor.
* 1500w with 20 * 4 — Okay. (If your tire is 20 * 4 “, 20 * 3” rim is much better fit for 20 *4” tire. Also,we have 20 *4” rim)
* Please click above site. Wheel looks the same this one.
* At least the dropout 170mm or more
* With temp
* Can use single speed.But min 16 tooth can be installed on this motor. (Can’t use 11 or 12 tooth,only no motor hub use this 11,12)
* Ship to USA is okay.

Q: The tire is “Stingray tire” type. 20″ * 4 1/4″. If you think 3″ wide wheel will fit better ok. 16t freewheel is ok. Rather 1500w if motor will handle more power. Which turn count do you recommend for speed 35mph?

A: We recommend leaf 13 * 5T winding rotor.

1500w rear hub motor with bike rim

Q: I’m looking for a powerful direct drive rear hub motor for a 26″ MTB.
I’ve been looking at this motor:
1.Is this the best 26″ rear hub motor you have or do you recommend any other bike motor?
2.Can this hub motor be delivered with a temp sensor installed?
3.What type of gear cassette will it be able to fit with a 135mm dropout? (How many gears)
4.Can this bike motor run higher than 48 Volts? 52 Volt maybe? Or 72 Volt?

A: 1. We have 26 inch 48V 1500W rear hub motor. We recommend this one
2. With temp
3. Max 7 speed and fit for 135mm dropout. Default for screw on sprocket.(If you need to install cassette sprocket, should leave message when you order.
4. We recommend work at 48V battery.(Max 60V)

Q:Can this same rear hub motor also be delivered with a 27.5″ x 50mm tubeless rim?
I will install a 7-speed cassette sprocket, so very good that it supports this.

A: 27.5” and 26 inch are different rim.
If 27.5” rim is smaller than 700c and larger than 26 inch rim?
* If you need to install your 7-speed cassette sprocket. Please Note when you order.

Q: I want to use the newest 1500w hub motor in this bike:
If you press the green + (View all components) on the page you can see that it has 27.5 INCH x 50mm, tubeless ready rims and 142x12mm (Ai offset lacing) rear drop out.

So I’m wondering if you can deliver the hub motor with a rim that’s the same dimensions as the original rim?

A: We have some sample of 27.5 inch rim in stock. Looks the same to the one on your site.
We only ship two 27.5 inch hub motor kits to USA one time two month ago.(ONLY one customer need this 27.5 inch by now)
This 27.5 rim is smaller than 700c and larger than 26 inch.

Q: This sounds good. Thank you for even taking pictures.
How wide is the 27.5″ rim you have? (How many millimeters)

I have a 16 hub motor with leaf bike on the rim

I need to know what voltage is used by the 16 inch hub motor. When it was running on a trike that I no longer have, I think it was a 24v hub motor
Can you confirm that it is a 24v hub motor or is there someway to determine what the voltage and wattage is?
If so, would you be able to sell me the appropriate controller for that hub motor?  
MY SECOND MESSAGE slightly expanded:

I need to know what voltage is used by my 16″ hub motor.

Is there someway to determine what the voltage and wattage is? Also, is
that hub motor brushless and gearless?

Given that it is a Leafbike.com/Leafmotor.com hub motor, would you be
able to sell me the appropriate controller for that hub motor?

On your
16 inch 48V / 52V 1000W front scooter motor kit Item ID #LBCK16481000FNL page you show a controller for the 16 inch hub motor. What would be the
cost of the controller – the controller only? I do not want or need the
other parts.

Please tell me how to pay using VISA or PayPal. Kindly send me an invoice for 24V 250W electric bike motor controller, and I will pay with a VISA debit card.

I thought that I ordered a 24v controller for $112.00 which included a faster delivery, BUT when I tried to find the order on “My Account” I could not find it. Your “Live Chat” link would not work. If it had, I would have used it. Please advise regarding my order for the 24v controller. 

Will you kindly tell me what color wires are wired to the thumb drive?
I am using a 24v front hub motor
 
I am so pleased you answered so promptly. However, I am having trouble understanding your description. Would it be possible to send my a drawing or diagram showing all the wires from the controller and where they are going?

All I need is the color of the wires going to the 16″ front hub motor, the battery, and most important, to the thumb throttle.
I am attaching and embedding modified photo from your website. I you could simply label the wire colors and return to me?

help me purchase 250w electric bike kit

Q:
I want to purchase 1 set of 250w electric bike kit,but found there are two type 250w hub motors showed on leafmotor’s internet shop.
One motor is 250w gearless hub motor,the other is 250w geared hub motor.
Help…What’s the difference between them?Which e-bike kit should I order?

Answer 1:
Order 250w geared hub motor,it’s more popular these days.

Answer 2:
250w gearless and geared hub motors are the same brushless motors.They are both made up of rotor winding,halls sensor, magnet, hub…
The difference between them is with gears / without gears.
250W geared hub motor is a little more powerful than gearless hub motor,but there is some noise from gears.

Answer 3:
We offer 36V/250W — 16″ 18″ 20″ 24″ 26″ 700c 28″ e bike kits.
For example:28″ 36V 250W Rear wheel electric bike kit

Generally 28″ electric bike conversion kit is used to convert 28″ e-bike.
It includes below products:
1.1 set of 28″ 36V 250W rear wheel without tyre
2.1 set of 36V 250W controller with LCD display
3.1 set of 36V twist throttle or thumb throttle (optional)
4.1 set of brake levers
5.1 set of three button ON/OFF switch
6.1 set of disk-adapter plate

The motor and controller are the most important products among this bike kit.
1.Motor:36V 250W brushless geared hub motor,28″ wheel default speed:16.2 miles/hour.BTW,we can customize motor speed as your actual need.
2.Controller:36V 250W brushless motor controller

Working with LCD

Special Features:
1.EABS System
2.1 + 1 Assistance
3.Idle Running Protection
4.Dynamic Motor Lock System
5.Motor Shaft Lock Protection
6.Power Tube Protection
7.Cruise Speed Control
8.Self-check Protection
9.Speed Limit
10.Remote Control Anti-theft