Category Archives: hub motor - Page 2

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.

18 inch electric motorcycle conversion kit

Posted by leafmotor on April 12, 2023 Comments Off

I am interested in the electric motorcycle conversion kit you offer. I am electrifying an old Kawasaki KE 125 (1976) and would require the fitting electric hub engine for the rear wheel and all other components (controller, battery, brake). Before I can order, I have a few questions:

I would need a 18inch rim (at least 2.5inch wide as shown in one photon in this kit https://www.leafbike.com/products/electric-motorcycle-kit/1.6-18-inch-48v-52v-1500w-rear-electric-motorcycle-motor-kit-1275.html?VariantsId=10576 , but it could also be wider as there was a 2.75 inch rim installed before). However, as for the hub motor, I would like to have a 2000W motor with max speed 50mph as described here for a 16inch rim https://www.leafbike.com/products/electric-motorcycle-kit/1.85-16-inch-48v-52v-2000w-rear-electric-motorcycle-motor-kit-1272.html?VariantsId=10413. Is that possible?

Do you have a faster hub motor in a motorcycle kit too?

The drop out would need to be 215 mm. I measured 200mm between the swing arms (inside to Inside distance) and 215mm at the outside (outside to outside distance). Is that possible? Or is there another way to adjust it?

I assume that when buying the kit, this means that I only have to install it but the rest fits together already?

How much more would be to get the color display LB08HU instead of the standard LCD-S830?

In addition, I would need the disk brake to be mounted on the left side with your motor flange (https://www.leafbike.com/products/electric-bike-parts/motorcycle-disk-brake-pads-rotor-flange-1252.html) such that I assume that the cable location should be on the left?!

I would also order the disk brake set for motorcycles that you offer (https://www.leafbike.com/products/electric-bike-parts/180mm-motorcycle-disc-brake-1056.html) and a battery.
For the battery, I am wondering how much of a difference the 52V (https://www.leafbike.com/products/lithium-battery/52v-20ah-lithium-battery-1224.html ) compared to the 48V makes in terms of performance of the hub engine?

How much would cost in total incl. shipping?
The shipping would be to Finland. How does it work with the customs? Do you have any information and experience with shipping it to the EU?

Inquiry Hub bike motor

Posted by leafmotor on February 20, 2023 Comments Off

Q: Cengalo is a Startup for a 4 wheeled lightweight car with 2 bike Hub motors on the rear wheels.
We plan a speed of approx 75 Km/h, downhill, with 20 inch wheels.
Can you offer the 48V 52V 1500W front spoke hub motor – electric bike motor with appox 800 rpm?
Motor type: brushless bike motor
Voltage: 48V / 52V
Power: 1500W
Max efficiency: 90.5%
RPM: 600
Mechanical brake: V
Cable location: shaft end, Left
Cable length:150cm / 60″
Install: spacing of 100mm fork
Noise: < 60 db Surface: Black painted Net weight: 6.9kg / 15.2 lbs Gross weight: 7.8 kg ( after packing ) A: 48V 52V 1500W front spoke hub motor - electric bike motor with appox 600 rpm. It's very fast. (Default the fastest) But also, we can make faster bike motor (over 700rpm) Q: The higher speed hub motor can be interesting for the vehicle. Than we can use 48V battery. We have yet to decide if the vehicle is 48 or 72 volts batteries. With the higher voltage (72V) battery, the same hub motor would have a 1.5 times higher speed. Do you have experience what is better for the car? A: This 1500w bike motor max use about 2.5mm phase wires. Can work with 72v battery. But uphill,if cable too hot,should stop at once. Q: Can you give a wholesale quote for the 1500W front spoke hub motor 100 psc / 500 pcs / 1000 pcs per order? We calculate the Cangalo Smartcar with this offer. Unfortunately we can't place an order until 28.2. We have to develop the vehicle, Cengalo Smartcar, first. You always answered quickly and hopefully will continue to do good prices in the future, so we can well imagine ourselves with Leafbike as a long-term supplier work.

bldc motor for electric bike

Posted by leafmotor on December 7, 2022 Comments Off

Because of lower noise, more powerful,longer life.Now bldc motors are popular for electric bikes.

This motor can be easily built into a wheel hub,called brushless hub motor or done a chain drive,named stepper motor.Stepper motor is more powerful than brushless hub motor.

As all known,hub motor is easy to convert e-bike,but for bldc motor,it’s so easy to convert.You should use a chain to drive wheel.
We have three kinds of bldc motors.It aslo is made up of rotor winding,hall sensor,bearings,axis,gears.

Because of gear drive,it’s more powerful than common brushless hub motor.
1.BLD-500 bldc motor Net weight:6.08kg

2.BLD-650 bldc motor Net weight:6.53kg

3.BLD-800 bldc motor Net weight:8.8kg

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

question about 1500W rear spoke hub motor – electric bike motor – Spline Cassette

Posted by leafmotor on October 18, 2022 Comments Off

Hi I am interested in 48V / 52V 1500W rear spoke hub motor – electric bike motor – Spline Cassette.Please can you tell me if this is the fastest 1500 you sell.I would like this in a 26 inch MTX rim if possible.

I require high speed over torque as I am not a heavy rider. This must be laced to a very high standard and run true.

Will this take a 9 speed cassette. Can you declare low value so I get no customs charge

I want thus shipping to UK as soon as possible.

Please can you use the temp sensor that is compatible with the cycle analyst v3
When will this item ship and how long to reach UK.
I am ready to make the order please tell me how to make the order.

We don’t have the cycle analyst v3
So we are not sure.

We have two kinds of temp sensor
KTY 84 -130
NTC -10K

Many of our customers use KTY 84-130 or NTC-10K to compatible with the cycle analyst v3

This motor takes about 1-2 days to make.
It takes about 7-10 days to ship. (Because of Covid-19, the shipping cost is expensive,but slow)

Click that Item, Check out, check out.. then write your shipping address..check out.. can done payment.

Please leave message: what kind of Temp.

Hi please can you tell me the size of the nut on the cassette side of axel
I know it is 12mm but what is the pitch of the threads.
1.5
1.75
1.25
Please help as I don’t feel safe with the small thin nut you included

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?

Ebike Breaking questions

Posted by leafmotor on May 24, 2022 1 comment

Q: I have three questions so far. One is about the Regen breaking, another is about the break levers, and the last one is about coasting.

For the Regen breaking does the controller prevent Regen breaking when the battery is fully charged so as to not burn out the controller or will I need to buy something else to prevent that from happening?

I see that the break levers have cables running from them however it says that I should buy break cut off sensors. If those cables are not for break cut off sensors what are they for? Also I already have hydraulic breaks so do you have hydraulic break levers that have the wiring that I need or do I just need to buy the break cut off sensors and add them to my bike?

I know that direct drive motors have drag however I would like to know at what speed, if any, it will “short” and forcibly slow me back down “some controllers do this”. And and what speed it will slow me down if any if I use it with the battery detached.

A: Regen breaking works while press braking leaver (from slower to stop,only a couple of seconds – impossible to be fully charged

Our brake lever with cut off sensors.
Your hydraulic breaks without cut off sensor.
If you don’t like our brake lever, hope use your hydraulic breakes, buy cut off sensors.. please click below site.
https://www.leafbike.com/products/electric-bike-parts/hydraulic-mechanical-brake-cut-off-sensor-switch-cable-1213.html

The direct drive motor has resistance, but it is not obvious. The power-off switch and mechanical brake must be used to stop the motor.
If the speed of 50kmh is on the flat ground, disconnect the power supply, do not use the mechanical brake, and generally slide more than 150m (if two rider on bike,may just slide 20m)

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