Bosch Performance Line CX motor sounds like a loud milk float. Is it normal?

[Philip Copley]

Hi John, he says he could hear his own motor as well as mine when riding close together, regards, Phil.

 

[Old Fart At Play]

Hi John, he says he could hear his own motor as well as mine when riding close together, regards, Phil.

Hi Phil, that's brilliant, thanks v much. My wife can't hear her AL3 above my CX4, so it definitely sounds like my motor is noiser than it should be. I know this isn't scientific, but it is interesting!
Thanks again
Cheers, John

 

[Old Fart At Play]

UPDATE

Just rode the bike back from the bike shop, complete with new motor.
What a difference! Not nearly as loud, and I couldn't hear the tinnitus-like jangling. Very happy!

Now I can swap over my Brooks saddle, change the handlebars etc and generally make it mine.

I wasn't certain that there was a problem, but I am so pleased that I took it back.

Cheers, John

 

[maintainn]

UPDATE

Just rode the bike back from the bike shop, complete with new motor.
What a difference! Not nearly as loud, and I couldn't hear the tinnitus-like jangling. Very happy!

Now I can swap over my Brooks saddle, change the handlebars etc and generally make it mine.

I wasn't certain that there was a problem, but I am so pleased that I took it back.

Cheers, John

Sorry to comment on an old thread but found your comments through a search as your problems sound like my current one. So glad you got yours resolved. For reference just purchased a new old stock ebike with a 2022 bosch performance cx motor. It also has a very very noticeable whine (many times worse than others i test rode). This is the first bosch cx ive ridden however. Had to order it through the bike shop without a test ride first. One part that really intriqued me is you stating it made the same noise when pushed backward(motor off). Question is does the new motor do this the same or to the same degree?
Mine is noticed greatly if i stand it up on the back wheel walking behind it, then let the front slam back down to the ground, which naturally causes the rear wheel to roll backwards. This is how i unload it from the bed of a truck, one wheel at a time. Thanks in advance for any input.
Joe