Will there ever be a fix for the Bosch motor rattle?

[Dave_B]

Just curious if there will ever be an aftermarket fix?

 

[Zimmerframe]

Something like this ? But in Aluminium or Titanium (depending on spec/price) ?

 

[yorkshire89]

I think the motor rattles as a 'fix' for reduced drag pedalling beyond the cut off limit?

I don't find it very noticeable on my bike at all on top of all the other noises going on when descending. The clicking when you stop pedalling is much more noticeable to me.

It sounds like it depends on the bike and frame material though. I do have a layer of motox foam between the top of the motor and frame which may help, it's also an alloy frame.

Can you upload a riding video so we can have a listen?

 

[Doomanic]

 

[slomtbr]

If there's a 'fix', it won't be aftermarket. The noise is the ratchet inside the motor.

bosch gen 4 rattle, reply from bosch

hi Put less than 200 miles on my team cube stereo and it seems to have the rattle everyone is talking about, which has got louder over time, to a point where I don't even want to ride it sounds broke. So I fired a few emails to Bosch this is what they said. The clacking and rattling noise is...

www.emtbforums.com

 

[raymondo]

Had my Motor replaced under warranty last year and the new one doesn't rattle at all, so that would suggest there's already a fix in the system.

 

[Paulquattro]

Had my Motor replaced under warranty last year and the new one doesn't rattle at all, so that would suggest there's already a fix in the system.

I have a 2022 motor
still rattles

 

[raymondo]

I have a 2022 motor
still rattles

Could still have an older motor in it.
Mine is night and day different tbh. Totally quiet in the rattle department. The original one wasn’t.
Makes you wonder. The replacement is clearly different.

 

[irie]

I have a 2022 motor
still rattles

Don't think either of our Trek Rail 5 (500Wh) motors rattle. Or at least I don't hear it but I do have some high frequency hearing loss. But wife doesn’t hear it and her hearing is shockingly good. Purchased January 2022.

 

[2WheelsNot4]

Expanding foam ?.

 

[Spin]

I have a 2022 motor
still rattles

I have a 2022 motor.
Doesn't rattle

 

[Paulquattro]

Could still have an older motor in it.
Mine is night and day different tbh. Totally quiet in the rattle department. The original one wasn’t.
Makes you wonder. The replacement is clearly different.

I hope not is was only bought in may 2022 its a gen2 rail

 

[Paulquattro]

I have a 2022 motor.
Doesn't rattle

Its probably all the dust that keeps it quiet

 

[Mikerb]

pretty sure Bosch would have announced any design change designed to quieten the motor. Neither of my Bosch powered bikes rattle ( Whyte E180RS/Whyte E160 RSX). I think it was established that the rattle derives from the amount of pedal kick the bike generates when freewheeling and that depends on the kinematics of the rear triangle and shock.

 

[raymondo]

Mine is a whyte E150 and the original motor rattled, but the replacement doesn’t. That suggests something different in it’s construction.

 

[JP-NZ]

I only occasionaly hear a slight rattle in my MY22 Rail 9.8. Its never loud enough to worry me at all