Monthly Archives: September 2024

The hub motor works very well but with E7

Q: I connected hub motor to the controller and everything up correctly and the display powers on perfectly well but when I turn the throttle on nothing happens with bike motor. Is there a necessary configuration?

A: First connect hub motor.Controller will check Hall sensor.Display E7. If connect wires well. E7 will be off. If always display E7. Bike motor works in no Hall status. Just check White big plug with red,black,green,blue,yellow..(Hub MOTOR SENSOR PLUG)If one wire is not connected well.Always display E7. Check if pin inside white big plug was bent?

Q: I checked the pins in that sensor plug, they all seem to be perfectly fine. The hub motor has not worked since I got it even if the hall plug is unplugged. Is there a change in settings for sensor less?

A: There are two brown wires from controller. Remove black tape on two brown wires. Don’t turn throttle. Plug these connectors together. Controller can look for correct working way. .Plug them.If bike motor Not work,Disconnect them.Then re-plug until work correctly.Then disconnect them.Turn throttle

Q: Cool I will try, should I turn the bike off before I connect the wires or should I do this while it is on? Will connecting those wires spin the motor?

A: If plug these two connectors,also can’t solve it. Controller always remembers this E7 is correct working way. Do it as below: 1.Disconnect/remove your battery power plug 2.controller’ red and black wires touch together for 1 second.Let controller to be default Then re-connect your battery to controller.(If wires are connected well).Must solve it.

Q: When I connected the pedal assist it works perfectly, so it must be the throttle, could you verify for me that this is the correct wire orientation?

BMX 20 inch 48V 52V 1500W rear hub motor electric bike wheel

Q: Please send me a quote for this 20 inch 48V 52V 1500 Watt rear hub motor laced to a 20 inch double wall rim with 1.75 inch tyre.
few questions:
-what is the overall diameter ( mm ) of the 20 inch rim with 1.75 inch tyre ?
-what is the dropout distance of the axle ( mm ) ?
-please send me a schematic wiring diagram of the cable wires.
-estimated delivery by standard sea freight to Sydney, Australia.
-estimated delivery time ( weeks ).

A: This 20 inch BMX rear bike motor is fit for about 110mm rear dropout. (The dia. of shaft is 14mm, 14mm screw nuts, flat is 10mm that fit for 10mm)
Please click below site.
https://www.leafbike.com/products/e-bike-hub-motor/bmx-20-inch-48v-52v-1500w-rear-hub-motor-electric-bike-wheel-1264.html
If your tire is 20 x 1.75. When you order, tire size,choose: 20 x 1.5″ / 1.75″ / 1.95″
Total size of 20 inch rim is 420mm (about 16.5″)
There is one cable from motor with 3 heavy green,blue,yellow wires and 5 thin red,black,green,blue,yellow wires.
It takes about 10 days to deliver in Sydney, Australia.

Q: yes I think the Power Circle 20 inch rim with 1.75 inch tyre will suit my e-scooter rear frame.
My rear frame dropout is 135 mm, can you replace the 110 mm axle dropout with a 135 mm axle dropout.

The hub motor looks like it has a lot of torque (N. m), do you have torque arms that can fit on each side of the axle flats.
This will allow me to fix the torque arms to my rear frame to stop the axle spinning backwards under hard acceleration.

Do you have a wiring schematic for all the wires coming out of the hub motor so I can check which wires needs to connect to my Controller.
Is there a wire for the thermistor for the hub motor temperature sensor.

A: please click below site.This motor is 135mm dropout.
https://www.leafbike.com/products/e-bike-hub-motor/20-inch-48v-52v-1500w-rear-bike-motor-wheel-1016.html
We don’t have torque arm now.
We have NTC-10K and KTY84-130 two kinds of temp.Can choose one of them install into motor.Will come out a white wire.

Q: What is the temperature of the two types of wire… Which one is suitable for the hub motor?

A: Maybe your display can choose set and choose any one of them. Default: KTY84-130 (Most customers use this temp)
But, also other customers asked us to install NTC-10K inside motor.