Category Archives: bike conversion kit

Other parameters in the display menu, USB outlet behind the display

Greetings, I have received hub motor kit with everything, and am happy with it so far, although I haven’t assembled everything. I have a couple of questions:
In the owner’s manual after the editable functions of “LIM” (speed limit), “DIM” (tire dimensions), “UNIT” (metric or English units), there are 22 other parameters, named P1, P2, etc., C1, C2, etc, L1, L2, etc. What are those for, and can a user edit/change those, or should I leave those alone? I’m curious if one of them is regenerative braking strength in particular.

Also, I see a controller for lights, horn, and maybe turn signals. Is that for a device that you also sell, that does all of those functions, and is powered by the USB outlet I see behind the display on the side? Or is that just a phone charger, or is it just a plug for any light/horn device? Pics attached below if that helps. Thanks for any info, and for what I’m sure will be another great product!

P1 Motor Characteristic Parameter Setting
P2 Wheel Speed Pulse Signal Setting
P3 Power Assist Control Mode Setting
P4 Handlebar Startup Setting
P5 Power Monitoring Setting

C1 Power-Assist Sensor and Parameter Select Setting
C2 Motor Phase Classification Coding Setting
C3 Power Assist Ratio Gear Initialization Setting
C4 Handlebar Function Setting
C5 Controller Maximum Current Adjustment Setting
C6 Backlight Brightness Adjustment Setting
C7 Cruise Function Setting
C8 Motor Operating Temperature Display Setting
C9 Startup Password Setting
C10 Automatically Restore Factory Setting
C11 Meter Attribute Selection Setting
C12 Controller Minimum Voltage Adjustment Setting
C13 ABS brakes of the controller and parameters of anti-charge control Setting
C14 Power-assist tuning parameters Setting

going to order leaf bike conversion kit with lithium battery

Posted by leafmotor on March 2, 2024 Comments Off

Q:Going to order your 20 inch 72v 2500w bike conversion kit and will need a 72v lithium battery. Any recommendations? Like to have one built to these specs: 72v 40a BMS 1000AH

Here’s my Cargo Ebike: Eunorau G30 Orange Cargo Bike to check out the shape of the battery casing.

A: Yes,we can make 72V 18ah lithium battery.
Would you need 1000Ah?

Q: Also, on the 20″ 72v 2500w bike conversion kit, does it have Juliet connectors on all major components? Yes. I want a 1000ah pack.

A: 1000ah? It’s equal to 50 sets of 72v 20ah lithium battery. Your bike can’t carry these lithium batteries.
Your bike max use 72v 50ah.

Q: Ok. I’ll take the 72v 50ah lithium battery and it will lock in same position on the bike correct?
And have a 40A BMS correct?(the controller in that kit is 40A max)
50ah I can ride for awhile between charges.
How many N.M. of torque does that motor produce?
On the 72v 2500w 20 inch bike conversion kit I also need a 7-speed freewheel. Will you install that as well? Eunorau G30 Orange Cargo Ebike

A: Yes.Can make 72v 50ah.But 3A charger charge battery is too slow.Also,too many cells.
We recommended 2 or 3 sets of 72v 18ah 40A lithium battery.That’s better than 1 set of 72v 50ah 40A

Q: What about 2 sets of 72v 30ah lithium battery?
I know even better 1) 72v 40ah 40a less cells and you can make it to fit in the housing of the frame .

A: Supply you frame size, let me check max can how ah.
We can customize lithium battery size as your frame.

Order 20 inch 48V 2000W front fat hub motor electric bike conversion kit

Posted by leafmotor on September 2, 2023 Comments Off

Order 20 inch 48V 2000W front fat hub motor electric bike conversion kit
Q: I need to order this item Item ID #LBCK20482000FS 20 inch 48V 2000W front fat hub motor electric bike conversion kit and all have to do is install it and it should be ready to go using my 60V 20A lithium battery ? Is it very difficult set up? Will there be instructions on how to set up the LB08HU? Is there an app to connect to the LCD display? Approx time if I order to get it shipped?

Will this this kind of hub motor melt if a heavy biker rides it on a 20% grade steep hills and electric hub motors are a challenge and require a properly sized and adjusted system to avoid overheating. The torque a hub motor can make is related to the physical magnet strength, width, air gap and diameter. The winding arrangement determines the voltage and current to make this torque. I also would like to add a part for better cooling.

Did you get my update info,Please advise if the one you recommend will meet these requirements.

A: This 20 inch 48V 2000W front fat hub motor electric bike conversion kit can work with 60V 20Ah lithium battery.
Very easy to install.
But because this hub motor is stronger and heavy,it’s fit for front snow bike ‘s 135mm dropout

08HU manual enclosed.
Where to install each part and how to connect each wires as below wire diagram
https://www.leafbike.com/u_file/2302/04/photo/20-inch-front-fat-bike-conversion-kit-wire-diagram_3994ff0c09.jpg

After place an order, wait for about 2 ~ 3 days can ship.

Q: This is what’s on the trike, your hub suggestion shows 135mm will it work?
Technical details
Hub Motor type Brushless direct drive Output range 250 – 6000 Watt Voltage range 48 – 96 Volt Maximal Amp 90 Amp RPM / V 10 Torque 115 – 150 Nm Efficiency 88% Weight 9 kg Drop out 140 mm Disc brake mounting Yes Sprocket gear Freewheel mounting Front or rear wheel Rear wheel Controller type Sensorless & sensor controllers
Magnet width 40 mm Poles 46 pair Hall sensors 3 x Honeywell Bearings NSK industrial Sealings Yes Motor phase plug 3 x XT150 Hall sensor plug Mini XLR 5 pin Temperature sensor Yes
Spokes SAPIM 12G INOX (size = 2,6 mm) Rim EXAL EX25 20/26” extra wide rim Rim sizes 20” & 26”

A: 135mm works. (add 1 washer both side, reach 140mm)
Below is 48V 2000w motor drawing. (46 pcs 42mm width magnet, 3 pcs hall sensor, 12G spokes, 5mm or 6mm phase wire)
https://www.leafbike.com/u_file/2301/07/photo/2000w-front-beach-snow-fat-bike-motor-drawing_bbdbc1e4ce.jpg

Below is 60V 2000w motor drawing (46 pcs 35mm width magnet, 3 pcs hall with 1 temp, 12G spokes, 3mm phase wire)
https://www.leafbike.com/u_file/2301/07/photo/1500w-front-beach-snow-fat-bike-motor-drawing_890f09dd23.jpg

20 inch 60V 2000W front hub motor Beach Snow Fat Tire bike conversion kit

Posted by leafmotor on August 31, 2023 Comments Off

Q: Can this be purchased for the 20 inch 60V 2000W front wheel? I Have a 60V 20A battery set up trike.
Item No.LBCK20602000RS 20 inch 60V 2000W rear hub motor – Beach Snow Fat Tire bike conversion kit

A: Yes, we have.
Please click below link. Thanks.
https://www.leafbike.com/products/beach-snow-fat-bike-kit/20-inch-60v-2000w-front-hub-motor-beach-snow-fat-tire-bike-conversion-kit-1329.html

Q: I don’t see a way to put my disk brake rotor on the front hub motor. Is it possible to do this?

A:There are six screws on hub motor cover for disc.

Q: Thanks for your help but my e-trike disc hub is on the left side or the opposite of your picture. Do I have to install on my right side to work.

A: This hub motor default: disc on the left side. (Disc cover on the left side of frame)
If you need to install disc on the right side. We also can make this motor ‘s cover on the right side of frame.

Q: Can you build something like this? I need it to be able to handle more torque than speed. I am about 340 lbs .

60V 20AH Lithium Battery Pack
QK TC65 Motor
Motor type Brushless direct drive Output range 250 – 6000 Watt Voltage range 48 – 96 Volt Maximal Amp 90 Amp RPM / V 10 Torque 115 – 150 Nm Efficiency 88% Weight 9 kg Drop out 140 mm Disc brake mounting Yes Sprocket gear Freewheel mounting Front or rear wheel Rear wheel Controller type Sensor lesscontrollers. Magnet width 40 mm Poles 46 pair Hall sensors 3 x Honeywell Bearings NSK industrial Yes Motor phase plug 3 x XT150 Hall sensor plug Mini XLR 5 pin Temperature sensor Yes
18 FET Controller or better
20” x 4” Knobby Front Tire

A: We can make disc on the right side. (But there is a issue. Your 140mm disc ‘s 6 pcs screws are easy to loose.
Our 60v 18 -mosfet controller, max about 45amp. Motor phase wire is 3mm. (weight is less than 9kg)
If need to stronger motor, please click below site. Below motor phase wire is 5mm or 6mm (weight is over than 9kg)
This motor can work with 60v,72v controller.
https://www.leafbike.com/products/beach-snow-fat-bike-kit/20-inch-48v-52v-2000w-front-hub-motor-beach-snow-fat-tire-bike-conversion-kit-1169.html

48V 52 V 2000W motor kit

Posted by leafmotor on August 29, 2023 Comments Off

Q: The 2000w bike conversion kit arrived safe and sound. I wonder if you would explain to me some of the wire connectors are for. What I should set
-U02 Power Watt Max 1000W default or 2000W hub motor
-U03 What is power gear? Saved, Gear 1,2…
-P07 Speed magnet number?24 ,36,48?
-P14 Current Limit? 30A-40A?
After I install the brake Cut off sensor I have E2 error what wrong
What are 2 blue wire connector for? 2 5 Pin connector at motor I use either one They work fine So what is the extra 5 pin connector for?
Please help me to make it work right.
The speed I got 86 kmh on 48V 15ah battery

A: U02 – You can set it as your hub motor power (Don’t set)
U03 – Don’t set
P07 — 46
P14 — You can set 30A or 40A. (Less current is bigger for controller) You can set 30A first, then ride or uphill, if good. That’s good. If not good for uphill, set it to 40A.

E2 – Your brake lever or sensor is braking. (Cut off motor power, at this time, motor can’t work)

Two blue wires are used for: look for phase wire, look for correct working way. If can’t work. Connect these blue wires together. Controller can look for right working way by itself.

5 pin extra — 2 sets of 5 pin extra are the same. They are connected to 2 sets of hall sensors. If one hall is broken,motor can’t work.
Just use the other 5 pin plug then can solve motor hall issue.

Q：Would you help me with the E7 error code after 2 blue wire connected
Is the hub motor failed? After connect 2 blue wire together I got E7 and motor stopped working. I worked fine I got 90kmh after I follow your instruction.
So what now?
The hub Motor and the speed controller work fine so far just a minor issue with the light wire (red+black)from the controller that does not work
when I connect it with my e bike rear light ,and there are 2 wires (red+white) from display What are they for?
Would you help me with bike conversion kit. If I succeed to upgrade my e bike I may do upgrade for my friends.
I will properly need you with more orders.
It worked now. THANKS

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

Leafmotor

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