Hello. I'm new to this forum and arrive here with an issue I haven't seen anywhere else online. When the rear wheel is held up (under no torque) it spins fine. With even a small amount of torque, the bike squawks like a duck caught in a fence gate. This particular hub motor has no viewable means of access to the inner workings...any help is greatly appreciated.
New to the forum, issue on video
- Thread starter unka
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D
Deleted member 4845
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One, usually both, of those side covers is removable. Sounds like a geared hub motor that has crushed the plastic gears, possibly a clutch problem. What I think you are hearing is the broken plastic teeth on the planetaries rubbing on the sun gear, with no load, they will engage and spin, with a load, they just bend out of the way.
Fairly easy replacement, not too expensive other than shipping.
Fairly easy replacement, not too expensive other than shipping.
There are no screws on either side of the motor and the spokes thread to both sides of the hub. There is no visible access to the motor. 
The sound it makes when under torque feels more like a vibration than a grinding...hope that helps.
The sound it makes when under torque feels more like a vibration than a grinding...hope that helps.
D
Deleted member 4845
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I see.
Well..., First, the spokes THREAD to the rim, they do NOT thread into the hub.
Second, is that disk brake rotor attached to the motor by magic, or by SCREWS?
The screw holes serve as leverage points and the side cover unscrews from the case.
Well..., First, the spokes THREAD to the rim, they do NOT thread into the hub.
Second, is that disk brake rotor attached to the motor by magic, or by SCREWS?
The screw holes serve as leverage points and the side cover unscrews from the case.
D
Deleted member 4845
Guest
Have never seen, or even heard of, such a motor disassembly.
Virtually ALL unscrew the side covers.
did you personally witness the disassembly? Methinks someone is blowing smoke.
Do the spokes, in fact, thread into the rim, and NOT the hub?
Is the disk rotor, in fact, attached with screws?
Virtually ALL unscrew the side covers.
did you personally witness the disassembly? Methinks someone is blowing smoke.
Do the spokes, in fact, thread into the rim, and NOT the hub?
Is the disk rotor, in fact, attached with screws?
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Hi unka and Welcome!
Ok you said a bafang motor, do ya know which one?
This link MIGHT be of some help:
Ok you said a bafang motor, do ya know which one?
This link MIGHT be of some help:
- Local time
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Also take a browse through here https://duckduckgo.com/?q=disassemble+bafang+hub+motor&ia=web
and check out some of the videos. Be sure which model bafang hub drive you have.
and check out some of the videos. Be sure which model bafang hub drive you have.
