Tag Archives: hub motor kit

Leaf Ebike Kit Questions

Posted by on August 4, 2023 Comments Off on Leaf Ebike Kit Questions

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? 

BMX 20 inch 1500W rear hub motor kit

Posted by on October 17, 2022 Comments Off on BMX 20 inch 1500W rear hub motor kit

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. 

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

Posted by on October 16, 2022 Comments Off on 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? 

How to choose a hub motor kit for your bike?

Posted by on December 30, 2021 Comments Off on How to choose a hub motor kit for your bike?

Hope to convert bike to e-bike. Often don’t know how to choose a hub motor kit ?

Just do it as below,very easy.
1.wheel size, 2.wheel width 3.Motor power 4.front or rear

1. Please check your bike tire size first.There is some words on your tire.
* If 26 * 2.5″ — Should choose 26 inch hub motor kit (2.5 is tire width)
* If 24 * 1.95″ — Should choose 24 inch hub motor kit (1.95 is tire width)
* If 20 * 1.75″ — Should chosse 20 inch hub motor kit (1.75 is tire width)

2. About tire width & rim with.
* The width of rim is 25mm — It’s fit for 1.5″, 1.75″, 1.95″ bike tire
* The width of rim is 32mm — It’s fit for 1.75″, 1.95″, 2.1″, 2.2″, 2.5″ bike tire
* The width of rim is 80mm — It’s fit for 4″ fat snow tire

3. About motor power. Please choose a legal motor for your bike.
* 250w bike motor, speed less than 25kmh that is fit for UK,Germany,France..other European Countries.
* 36V 750W hub motor, speed is less than 20mph that is fit for US

4.Covert front or rear wheel?
* All of our standard front hub motor kits are fit for 100mm dropout.
* All of our standard rear hub motor kits are fit for 135mm dropout.

If possible,please measure your fork first.

Convert front wheel is very easy.
Convert rear wheel is also easy,should install sprocket on rear bike motor. — What kinds of sprocket would you bike use,cassette case sprocket or screw on sprocket? Our rear hub motor Default fit for screw on sprocket. If yours is cassette case sprocket,we also can make this rear hub motor so that fit for cassette case sprocket.

https://www.leafbike.com
This is our new site.There is more product info.

Interested In Buy This Hub Motor

Posted by on December 29, 2021 Comments Off on Interested In Buy This Hub Motor

Q: I am very happy in viewing your electric bike rear direct drive with
26 inch hub motor wheel item ID # LBM26481500RN. My e-bike setup is 60 volts. Do you
manufacture 26×2.0 inch wheel with 60 volts 1500W rear direct drive
hub motors?
Secondly, also can you fit the bike motor in a fully BLACK rim without any
silver around the rim so it can match with my front wheel because I
use hydraulic disc brakes?
If there is anything that you need to ask me that I am missing, please
feel free to ask, that the purchase moves smoothly and correctly.

A: This 26 inch 48V 1500W rear hub motor wheel can work at 60V.Also,we can spoke this hub motor with all black color rim.

Q: Just a few more questions before I buy, because everything needs to be correct.
Can this bike motor fit any size frame bike?
Is it suitable for regenerative braking?
Does it have three phase hall sensors?
Can it fit 8 gear cogs? Which I am using at the moment with my old motor.
Please tell me the total length of the motor axle from end to end
because I’m using a rear rack ?

A: This 26 inch bike motor is fit for 135mm rear dropout. If your motor controller with regenerative braking function, will have it. It’s three phase with three hall sensors. One cable with 9 wires: heavy yellow, heavy blue, heavy green wires are motor phase wires. Thin red +5V, thin black / GND. Thin yellow, blue & green three wires are connected to three hall sensor.
It can fit for max 7 speed for 135mm dropout. If your frame can be larger, about 140mm,install 8 speed on this rear hub motor is no problem.
Total length of this shaft is 210mm.

product idea for your electric bike motor kit

Posted by on December 29, 2021 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.

Headlight 1000w rear electric bike kit

Posted by on December 29, 2021 Comments Off on Headlight 1000w rear electric bike kit

Q: I bought the 26 inch rear 1000 watt electric bike kit how do you wire the headlights to it I see a headlight display on the LCD screen and a switch for the headlights but no wiring diagram for that.

A: How to use three button switch?
1.We cut off that blue wire.It’s for reverse. If reconnect this blue wire. (Reverse is dangerous for e-bike. So we cut off blue wire)

This yellow button be left / middle,hub motor works forward. Be right side,motor works bacwkard / reverse…

2.Green button is used to control cruise, while hub 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 regeon.

Q: I appreciate your help in this matter is there anyway I can get a copy of the proper settings for the P and C settings on the LCD for the 48 volt rear hub motor kit.

I understand that but when I was trying to set. I’m afraid I opened the P settings and then went into the P settings before I realize what was going on I’m scared I might have changed something is there any way to get a copy of the P and C settings or will a factory reset work if there is any possible way to get a copy of what the p and c settings are supposed to be so I can double-check them it would be greatly appreciated.

A: P1 = 46
P2 = 0
P3 = 1
P4 = 0
P5 = 15

Q: My battery management chip on my battery was not plugged in all the way so I think that may have been the problem I’m charging it all the way up now I appreciate it though thank you very much just out of curiosity is there anyway you can get me the C settings for that 1000W rear hub motor kit .

leaf bike 26 inch 48V 1500W rear hub motor wheel kit

Posted by on December 29, 2021 Comments Off on leaf bike 26 inch 48V 1500W rear hub motor wheel kit

Q: I am interested to buy a complete Rear 1500w hub motor wheel ( the latest model with upgraded phase wires, 0.35mm lamination etc).
The model model I think is LBM26481500RN and I would like to know the following before if buy:
– the no load rpm for 4T, 5T and 6T motor at 48v
– and the top speeds under load for 26 inch wheel.
I am looking to have a maximum 55 – 60kph (not less than 55 ) top speed under load but a bit more torque for off road riding.
Also for a electric bike motor with disc brake mount, cassette, temperature sensor and a rim that fits a 2.5 tire is the same price?

A: If not load, 4T 1500w 26 inch hub motor is about 72kmh (work at 48v)
If not load, 26 inch 1500w 5T is about 60kmh (work at 48v)
We can make cassette case motor with 2mm phase wire. But we still recommend standard version with thread screw with 2.5mm phase wire.
Also,standard version is easy to install than cassette case..
* With disc brake mount, cassette,temp,rim fit for 2.5 tire – The same price.
We recommend: with disc brake, standard version (No cassette version),temp,rim fit for 2.5 tire.

Q: can you please send me a more precise data (numbers) about the rpm @ 48V for each available wingdings available, like a performance table or similar?
I found on internet different available information for this motor, but their are not consistent, there are also the forums..and each data is different.
I was hopping that you can provide me more figures..
And also,I don’t understand why for the cassette hub the phase wires are 2mm while there are existing on the opposite side ?

A:Thank you so much for the clear explanations, I understood very well now what are the draw backs for each design.
Also, I was looking over the performance datasheet and I suppose that those parameters are for the 4 turn winding I suppose right?
So for the 5T the maximum rpm with be lower and torque a bit higher. Also the max efficiency point will be at a lower rpm.
Good, so if I want to place an order for a 5T 1500W 26 inch Rear hub motor kit wheel with the following requirements:
disc mount
threaded sprocket
temp sensor
135 mm drop out
26 inch Rim for 2.5 tire (23-25 mm wide rim)
12 gauge spokes

A: Yes. That 4 turn winding.
If 5T, the max rpm with be lower and torque a bit higher.
26 inch wheel, we recommend 5T
Standard rear 1500w 5T with the following requirements
* can install disk the left side of motor
* can install threaded sprocket on the right side of motor
* with temp
* fit for 135mm dropout
* We have 26 inch out.size 25mm or out.size 32mm wide rim (Our 32mm rim is fit for 26 inch)
Please click below sites.
I think 26 inch all black color rim is fit for your 2.5 tire.