Category Archives: bike conversion kit - Page 22

Looking for bike conversion kit

Posted by leafmotor on August 27, 2023 Comments Off

Q: I am looking for support, when it comes to finding the right bike conversion kit:

My requirements are:

E-Motorcycle Maxi (50ccm motorbike, Photo attached):
Total weight (driver 80kg +bike 34kg + battery 48V/20Ah 7kg + hub motor 9kg +controller 1,5 kg): 131,50 kg –> weight of components are just an estimation!
Hub motor must be mounted on a 1,35 x 17″ rim with spokes.
Cont. Wattage of Hub Motor: as high as possible! around 3000 W ideal
max. vehicle speed @ lowest battery voltage (40V) @ 0 climb angle (13 x 3,1V = 40V): 60 km/h
max. climb angle: 8-10 %
max. swing arm dropout: 138 mm
thickest axle diameter: 12 mm (see reference picture)
Battery
Nominal voltage: 48V
Peak Voltage (fully charged): 54,6V
min. Capacity: 20 Ah
Range –> unknown as this will be tested with first kit
Controller must be programmable (V max limit changeable, phase current changeable if possible)
48V system fit to hub motor

A: Thanks for you are interested in our products.

Please below link. These 17 inch bike conversion kits are fit for you.
https://www.leafbike.com/products/electric-motorcycle-kit/17-inch-electric-motorcycle-wheel/

Q: Can you please send me data sheets to the strongest hub motor and a mechanical drawings.
A:If need to stronger, replace this stronger controller. We can make this kind of 17 inch, just replace a rim.
https://www.leafbike.com/products/beach-snow-fat-bike-kit/26-inch-2000w-5000w-high-power-rear-hub-motor-bike-conversion-kit-992.html

But this 2000w hub motor is fit for 170mm or 190mm dropout.

Q: I cant use this hub motor as the dropout is too big.
Looking for a hub motor with max 138mm dropout. Whats the strongest you can offer?

Please send me data sheet, test curves and mechanical drawing of the hub motor

A: If need to install sprocket / Chain, max use 1500w motor.If don’t need to install sprocket / Chain, max 2000w motor.

Q: Please send me datasheet, test curves and mechanical drawing of the 1500w hub motor.

Leaf Ebike Kit Questions

Posted by leafmotor on August 4, 2023 Comments Off

Q: I would like to purchase a 27.5″ electric hub motor kit that fits in 135mm dropouts and I have a 72v (20s) battery capable of 80A continuous that I would like to use. Several questions please:
A. Can I buy a 27.5″, Freewheel, Rear, Wide Rim, kit that fits in 135mm dropouts with the “2000W ~ 5000W programmable controller” instead of the controller that normally comes with the hub motor kit and if yes, what would the total price of the hub motor kit be before shipping cost are added?
B. What is the internal width of the widest 27.5″ rim you have available?
C. Can I get the 5mm phase wires with the motor configuration I specified in “A.” above? If yes, how much would it change the price? If no, what are the largest diameter phase wires I could get?
D. Do all Direct Drive Leaf motors now use the .035″ thick laminations? I would definitely want them.

A: A. 135mm dropout – max make 48v 1500w rear bike motor,see below drawing. no room to make 2000w motor. (This 48v 1500w motor with 3mm phase wire can work with 48v or 52v or max 60v)
https://www.leafbike.com/u_file/2301/01/photo/1500w-rear-bike-motor-drawing_53f4287594.jpg

But, if no freewheel, not pedal, can make it to be 48v 2000w front bike motor(see below drawing) that fit for 135mm dropout and can use “2000w~5000w programmable controller”
This 48v 2000w motor with 6mm phase wire can work with 48v or 52v or 60 or 72v batteries.
https://www.leafbike.com/u_file/2301/07/photo/2000w-front-beach-snow-fat-bike-motor-drawing_bbdbc1e4ce.jpg

We have three kinds of 27.5 inch rim, one is 23mm width, the other two is 25mm and 32mm width. (Max 32mm width)

If 26 inch, we have 25mm, 32mm, 80mm width rims.

B. Our 27.5 inch 32mm width rim, internal width is 25mm

C. 48v 2000w can use 5mm or 6mm phase wires. (But 48v 1500w max use 3mm phase wires.

D. All of our motors use .035″ thick laminations

Q:
Two more question regarding the “48v 1500w rear bike motor” phase wires:

A. Are the phase wires 3mm in diameter or 3mm in cross sectional area?

B. Is the 3mm dimension for the actual copper wire or the overall including the insulation?

29 inch electric hub motor kit

Posted by leafmotor on April 12, 2023 Comments Off

Q: If I buy 29 inch electric hub motor kit, for the real wheel, will the cassette of back wheel fit together with the our wheel? Cassette i mean the component, where the chain goes to change speeds. I am afraid the motor plus the cassette will not fit the bike. Our electric motor kit, fits 29inch x 1.95 but does it fit 29inch x 1.35?
I am interested in buying a new bike and adapt it because if will be have a better cost/performance/quality ratio, than buying strait electric bicycle. This what I am interested in,it is a carbon fiber frame 2k, their cheapest electric mountain bike was an allow frame, 400w motor and costs 2.7k, so plus 700 dollars, allow frame and only 400w compared with ours kit.

A: Not comes with cassette. It’s standard size. ONLY 7 speed cassette fit for our hub motor. Our 29 inch motor wheel is fit for 29 x 1.95″ tire and 135mm dropout.

Q: I can buy the front wheel kit instead, few months from, still need to buy the bike first.

A: Front wheel kit is also good.

Q: https://www.leafbike.com/products/diy-bike-conversion-kit/29-inch-48v-52v-1500w-rear-wheel-electric-hub-motor-kit-1065.html
Does this kit come with battery? Also ” Freewheel / Cassette: space for single speed..6 speed or max 7 speed”
I want the version sprocket with cassette not freewheel.
Can you tell me the size off the sprocket?
The cassette from the bike i want is 40.9mm and 12speed, just 8 or 9 mm more than the standard 7 speed cassette.

A: Not come with battery. Cassette is standard size. As we knows,only one. Ours is fit for 7 speed. Not fit for other 6 speed.

Q: If I know the exact size of the sprocket i know if the cassette will fit, in the kit, if not i can put the motor on the front wheel, which fits the sizes?

A: But it’s not fit for 135mm dropout，install 7 speed on this motor. Your dropout should be 137mm.If 12 speed.Your dropout should be more than 145mm.Mount bike,max 7 speed. 7 speed is fit for your rear fork. This rear motor isn’t fit for front.

Electric bike kits for e-bikes

Posted by leafmotor on December 7, 2022 Comments Off

Convert original bike to e-bike should purchase one set of electric bike kit.In market,there are two kinds of electric bike kits.One is electric motor wheel with accessories,the other is bldc motor with chain drive.The second one is hard to convert,so most of people like the first type of e bike kit.

About first hub motor wheel kit,European like 250w electric bike kits,but 750w and 1000w e bike kits more popular in North America.

Leafmotor has below electric bike kits:
1.16″ 18″ 20″ 24″ 26″ 700c 28″ 24V 250W electric bike motor kit
2.16″ 18″ 20″ 24″ 26″ 700c 28″ 36V 250W electric bike motor kit;
3.14″ 16″ 18″ 20″ 24″ 26″ 700c 28″ 36V 500W electric bike motor kit;
4.14″ 16″ 18″ 20″ 24″ 26″ 700c 28″ 36V 750W electric bike motor kit;
5.14″ 16″ 18″ 20″ 24″ 26″ 700c 28″ 48V 1000W electric bike motor kit;

Now we talk about three type classic e bike kits:

1.20″ 36V 750W rear electric bike kit
Model: 601 Kit-1 bike conversion kit
①.20″ 36V 750W rear electric bike motor
②.36V brushless motor controller working with LCD ( New )
③.LCD (Display speed,voltage,mileage…)
④.Twist or thumb throttle with battery guage — optional
⑤.Brake lever
⑥.Three-button ON/OFF Switches
⑦.PAS (Pedal Assist) — optional
Net Weight: 7.86kg — Gross weight: 9.48kg (after packing)
Install: It’s fit for standard 135mm rear frame fork.
Used for: Convert your original bike to electric bike.

2.20″ 48V 1000W rear electric bike kit
Model: 601 Kit-1 bike conversion kit
①.20″ 48V 1000W rear electric bike motor
②.48V brushless motor controller working with LCD ( New )
③.LCD (Display speed,voltage,mileage…)
④.Twist or thumb throttle with battery gauge — optional
⑤.Brake lever
⑥.Three-button ON/OFF Switches
⑦.PAS (Pedal Assist) — optional
Net Weight: 7.98kg — Gross weight: 9.68kg (after packing)
Install: It’s fit for standard 135mm rear frame fork.
Used for: Convert your original bike to electric bike.

3.28″ 36V 250W rear electric bike kit
Model: 701 Kit-1 bike conversion kit
①.28″ 36V 250W rear electric bike motor
②.36V brushless motor controller working with LCD ( New )
③.LCD (Display speed,voltage,mileage…)
④.Twist or thumb throttle with battery gauge — optional
⑤.Brake lever
⑥.There-button ON/OFF Switches
⑦.PAS (Pedal Assist) — optional
Net Weight: 5.72kg — Gross weight: 7.35kg (after packing)
Install: It’s fit for standard 135mm rear frame fork.
Used for: Convert your original bike to electric bike.

want to order electric bike kit

Posted by leafmotor on November 21, 2022 Comments Off

Q:
Want to order 1 set of electric bike kit
Detail:
1. brushless hub motor with 36V 500W,no matter if front or rear configuration
2 .suited 16″ wheel (rim+tire)
3. matching controller – capable of reverse direction
some questions:
1. does the motor/controller can effectively brake the wheel or need outer brakes?
2. are the system is ready for adding disk-brake in the future (or even v-brake), if so, do you supply brakes (disk+clipper)

Answer 1:
1.16″ hub motor doesn’t include tyre;
2.Motor control support backward;
3.Brake lever can cut off power and you need outer V-brake or disk brake.
Rear motor can be installed disk brake now,but front motor only use V-brake.

Answer 2:
We suggest you order:16″ 36V 500W rear brushless hub motor kit
The product list about this kit:
1.1 pcs of 16″ 36V 500W or 36V 750W rear hub motor(casted hub+16″× 2 1/4″ tyre)
2.1 pcs of 36V 500W or 36V 750W brushless controller with LCD display speed,mileage…
3.1 pcs of 36V twist throttle with battery gauge
4.1 pcs of brake lever
5.1 pcs of three-button ON/OFF switch that used to control front & rear lights,horn…
6.1 pcs of adapter disk tool that can be mounted on motor and used to install disk
7.1 pcs of φ140mm disk+adapter
The answers for other questions:
1.This LCD controller support reverse;
2.Pull brake lever,it will cut off power,but you still need to install V-brake or disk brake.We suggest disk brake;
3.Our rear hub motor can install disk brake now,but front motor only use V-brake;
4.About motor speed,we can customize as your need;
5.This rear motor is fit for 135mm frame fork.
If have more questions,please free to ask.Thanks.

Answer 3:
This hub motor is more powerful,very nice and casted hub is much better than spoke wheel.Don’t worry spokes will be loose.

Answer 4:
New 36V 500W electric bike motor controller works with LCD.
It’s cool.

The best answer:the second answer

BMX 20 inch 1500W rear hub motor kit

Posted by leafmotor on October 17, 2022 Comments Off

Q: I will be purchasing the your BMX 1500W rear hub motor kit. Before I go ahead could you please help with the following information.

1. What is the expected delivery time to the UK with the current covid 19 pandemic in the UK in terms courier entry to the UK?

2. What amp battery would I require?

3. Would my Saracen amplitude (steel frame) need re-enforcing to handle the power? ……In your opinion as I understand this is a difficult question to answer.

A: 1. about 10 days now. (It’s faster than last month)
2. 40amp or 50amp battery
3. if install hub motor on frame very strong,very well..No looseness — No problem (We will make wheel works in the line. Shake is less than 0.5mm from left & right.. shake is less than 1mm from up to down)

Q: Okay well my best option is to purchase a customized battery from you, as you best know the requirements for the kit you sold me…..

1. For clarity the following battery is the product I need to order? –
52V 12ah lithium battery –
Item ID #LBB521B
£335.75?
& You will customize as per your knowledge of my requirements?

1b. This battery is designed to attach to the Bottle holder screws I believe? As it’s being attached to the Top Bar of the BMX (under the riders knees) laying from back to front of bike, A BMX does not have these bottle holder screws.

Do you sell a bracket that I can use to attach the battery without using Bottle holder screws?

Or know if possible to add those type of screws to the frame of my BMX?

2. Also my precious kit purchase added around £150 for important fees…..
Will this battery have added import fees? —as not added until final till checkout on site.

3. Do you sell a Torque arm that is compatible with my BMX hub because I want to further secure the wheel hub to the frame?

4. Could you offer my any additional discount? on battery and (Torque arm + battery bracket if you can supply) as offering repeat business associated with Hub purchase.

Thank you for excellent customer service I will be sure to leave an amazing Review on your website.

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

Posted by leafmotor on October 16, 2022 Comments Off

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

Posted by leafmotor on October 16, 2022 Comments Off

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

Posted by leafmotor on May 17, 2022 Comments Off

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

Posted by leafmotor on May 17, 2022 1 comment

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?

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Brushless hub motor丨e-bike conversion kit丨BLDC motor