Shimano Steps Motor Vibration

[spmyers59]

Hello all!

I’m new to this forum and was wanted to post this issue. I bought a Trek Dual Sport + at the end of July of this year. Love the bike and have almost 500 miles on it since I purchased it.

It has three power assist levels ranging from High (most assist) to Eco (least assist). My issue is that I am getting some vibration from the motor/cranks on the High setting when it is under load and warmed up (after approx 3 miles of up and down terrain). It doesn’t seem to affect the performance but it is annoying. I can stop this my downshifting, letting up on the pedals or dropping to a lower assist level (Norm or Eco).

The Bike shop shrugged it off as nothing to worry about but I was wondering if anyone else has experienced this issue.

Any input/remedies would be appreciated. (BTW...I lube the chain every other week and clean it once per month).

 

[larry-new]

It might be better if you put this in the Trek Brand section...other owners could then see it.

 

[rich c]

I'd suspect the tires/wheels more than the motor. These motors are very small in diameter, and easy to balance. The motor will spin at the same rpm no matter what assist level you are in. So if only in one assist level, I'd suspect a bicycle issue more than motor issue, and related to bicycle speed. Put a tiny bit of pressure on the brakes when it happens next. I would get a funny resonance on my fat bike at certain speeds. It was more sound related, but a tap on the brakes or faster speed changed it.

 

[spmyers59]

It might be better if you put this in the Trek Brand section...other owners could then see it.

Thanks...

 

[spmyers59]

I'd suspect the tires/wheels more than the motor. These motors are very small in diameter, and easy to balance. The motor will spin at the same rpm no matter what assist level you are in. So if only in one assist level, I'd suspect a bicycle issue more than motor issue, and related to bicycle speed. Put a tiny bit of pressure on the brakes when it happens next. I would get a funny resonance on my fat bike at certain speeds. It was more sound related, but a tap on the brakes or faster speed changed it.

Thanks for the input...I’ll definitely try that.. I was more worried that this might be something that would eventually harm the motor..