I tightened mine with a hammer because anything less than as-tight-as-possible led to the motor moving back and forth. Its been 2 years now, I guess I should be worried about my bb bearings. If I'd followed the torque spec I would've had to buy or make an extra bracket to stabilize this thing.
BBS02 noisy when pedaling with motor off
- Thread starter hias9
- Start date
docw009
1 MW
I see you have a Lekkie motor cover. I don't have one. I have never had the OEM cover off,
Watched a Lekkie video and it looks you have to press a bearing into the cover and also do some pressing of a gear. Perhaps you didn't press something far enough in, so there's some rubbing.
These motors are silent, at least the two I installed make no noise when pedaling in PAS 0 or with power off. I also don't find them that hard to pedal.
Watched a Lekkie video and it looks you have to press a bearing into the cover and also do some pressing of a gear. Perhaps you didn't press something far enough in, so there's some rubbing.
These motors are silent, at least the two I installed make no noise when pedaling in PAS 0 or with power off. I also don't find them that hard to pedal.
No need to press in a bearing for the Lekkie cover.
If the problem would be related to the cover there would be increased drag when the motor is turning. But that is not the case.
There is only increased drag and noise when pedaling faster than the motor.
Noise and drag when pedaling are still the same without the two nuts installed. Also without the two lockrings inside the axle it is not changing.
If the problem would be related to the cover there would be increased drag when the motor is turning. But that is not the case.
There is only increased drag and noise when pedaling faster than the motor.
Noise and drag when pedaling are still the same without the two nuts installed. Also without the two lockrings inside the axle it is not changing.
docw009
1 MW
Take my word for it. Mine is silent if I ride it at a speed slow enough to make a video,
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docw009
1 MW
I used to think this was important, when comparing how my BBS02 pedals would spin with the chain off to a regular bike. The comparison is like 2 turns compared to forever, relatively speaking. There's some resistance, but you have to think of real life when the chain is coupled to the wheel. What you need to turn the wheel is far more than any drag in the chain gear.
Turning attention to my other mid drive bikes, We also have two TSDZ2's. You cannot turn the pedal shaft or a TSDZ2B with your fingers when it just came out of its box. Mount a pedal arm, and the 170mm lever lets it turn with significant resistance, a lot more than my BBS02B. Mount the motor, fit the chain, and it feels no different than a regular bike with the wheel lifted.
I guess some bikers have built-in torque sensors in their calves that can feel this level of drag. I sure don't. I have ridden, not by choice, 26 miles w/o power on my BBS02B. It was not bad at all.
Yes, maybe it will not make a big difference while riding, but I don't think it should be that noisy (like there are frogs inside 
) while pedaling.
The main reason why I choose the BBS02 was because I wanted a silent mid drive.
And as the Chinese seller is not replying and I have no way to get my money back I need to find the cause of this noise and fix it.
Do you really think this noise is normal? Should I maybe renew the bearings although they are new?
) while pedaling.The main reason why I choose the BBS02 was because I wanted a silent mid drive.
And as the Chinese seller is not replying and I have no way to get my money back I need to find the cause of this noise and fix it.
Do you really think this noise is normal? Should I maybe renew the bearings although they are new?
I disassembled it and assembled it again and the only possible cause seems to be that the noise is coming from the metal-to-metal teeth contacts between the pinion and spur gear. But it is only present when pedaling faster than the motor is turning.
So it other words, the noise is only there when the spur gear is driving the pinion gear, and it is not there when the pinion gear is driving the spur gear.
Both gears are new and regreasing did not change a thing.
Can somebody please upload a video while pedaling with the motor and chain off?
This would help me a lot. Thanks!
So it other words, the noise is only there when the spur gear is driving the pinion gear, and it is not there when the pinion gear is driving the spur gear.
Both gears are new and regreasing did not change a thing.
Can somebody please upload a video while pedaling with the motor and chain off?
This would help me a lot. Thanks!
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