Q:After running for a couple of weeks.Sometime you can find there is some noise from bicycle rim while you are riding.

A:Now you should check spoke nipple.If can’t find 36 pcs nipple on spokes.There must be some nipples inside the rim,if not,maybe some aluminium impurity.

Solve:Disconnect your hub motor wheel from your e-bike,remove the tyre,you will find there is a red gasket round the rim,also take it off.Then make the valve hole down,shake rim,the impurity will be out of the rim.Re-install them.

Solve this noisy problem.

Advice: We suggest after running several days,had better to tight 36 pcs nipples.

Q:Can you help me?I am very disappointment.
I ordered a motor from the other supplier,the HBS36F — Front Motor.Sent several emails,haven’t gotten any reply in 2 weeks.

I have just tested it and it makes a noise once every turn and it gets stuck (or at least much more friction) at the same angle. It feels like it could be some magnetic effect but more likely it´s some mechanical contact that´s disturbing the rotation. Have you heard of this problem before or is the electric bike motor constructed to act like this? Could we do something to fix it, like open it up and remove whatever that´s making the noise?

A:The noise comes from some metal impurity on the magnet.

Solve: Disconnect hub and remove it

Hub motor is an electric bike motor that is an important part for electric bike.A common bicycle with a motorized wheel(hub motor) is an electric bicycle.

1.According as your size of rim,it has 6″ 8″ 10″ 12″ 14″ 16″ 18″ casting hub motors and 20″ 24″ 26″ 700c and 28″ electric bike hub motors
From 6″ to 18″,the rims are much smaller,so always casting hub.And used for electric scooters,electric tricycles,sometimes also used for folding electric bicycles.
From 20″ to 28″,because of rims are much bigger,always use spokes to fit.And used for electric bicycles.

2.According as whether has “brush”,it has two type:brushless hub motor and brushed hub motor
Brushless hub motor is make up of aluminium hub,aluminium covers,axis,bearings,copper winding, rotor,hall sensor..
Brushed hub motor is make up of aluminium hub,aluminium covers,axis,bearings,gear box(several gears inside),printed copper slice,two pcs of brushes..

The brushless hub motor’s principle:electromagnetic fields are supplied to the stationary copper windings of the motor. The hub(outer part of the motor)follows, turning the attached wheel.

The brushed hub motor’s principle:energy is transferred by brushes contacting the rotating shaft of the motor that drive gears,then drive hub.

Compare them:
Noise Efficiency Torque Use-life
1.brushless hub motor: √ >78% √ >3-Year
2.brushed hub motor: a little noise <70% a little larger replace "brush" in 2 year With the advantage of brushless hub motor,it used for electric bike widely. According as use,it also called electric bike motor. According as current,it has ac and dc hub motor.But nearly all of hub motors are direct current(DC).

Q:I’m planning to start a small production of electric vehicles and I’m evaluating your products.
I would like you to clarify the following details:
1) I read the performance data of HBL motor 24V/300W-36V/750W-48V/1000W, are these data referring to the same physical motor ?
2) What are the physical differencies between HBL-36F1 / HBL-36F2 / HBL-48F ? I noticed that the weight is the same, is the gauge of the coil wires and/or the turns number of the coils different for each motor ?
3) Are HBL motors equipped with internal position sensors ?
4) Besides 14/16/18″ can you supply also 20″ aluminium casted rims for HBL motors ?

A:Thank you for you are interested in our electric bike motor.You are very professional.
About the first and the second question,you are right,these performance datas come from the same motor.No difference.
About the third question,HBL is brushless gearless motor with internal hall sensor.
About the fourth question,in past we had this 20″ aluminium casted rims for HBL motors.
Now no body use this 20″ hub motor,so we don’t manufacture this kind of motor.
HBL-36F1/HBL-F2/HBL-48F these three kinds of motor,if they have differences that come from the gauge of the coil wires and/or the turns number of the coils.

BTW,if you hope get other performance about this hub motor,for example:faster,slower,more power at the highest efficiency point.We can customize according as your order.