Wild FS Bosch cx4 clunking noise

[ionut.holbia]

My Wild FS has an suspicion clunking noise when applying little force on the cranks.

I uploaded a video with the issue:

19. September 2022

youtube.com

Any ideas on what the problem could be?

 

[Oupy]

Sounds like the standard gen 4 Bosch rattle to me... Have you only just started noticing it?

Check here for my examples and also some ways to recreate the noise to rule in/out - Rail - Normal Bosch rattle? - EMTB Forums

 

[Mteam]

Thats normal IMO

 

[ionut.holbia]

Sounds like the standard gen 4 Bosch rattle to me... Have you only just started noticing it?

Check here for my examples and also some ways to recreate the noise to rule in/out - Rail - Normal Bosch rattle? - EMTB Forums

I think this year I started to improved my riding skills and rode more aggressive and the noise was much more present.
I also did a service and replaced my shifting cables and I was blaming that… but it is the motor .
It’s a bit annoying… on the next bike I will do more research on how quiet the motor is. For sure the EP8 will not be on the list

 

[Mikerb]

...sounds to me like the freehub engagement.........and it seems a bit excessive so I would strip the cassette and freehub and take a look.

 

[Jag009]

My bike is relatively new and has no free play at all ,does this develop with time ?

 

[ionut.holbia]

...sounds to me like the freehub engagement.........and it seems a bit excessive so I would strip the cassette and freehub and take a look.

Don't think the freehub it's not engaged at all. The sound is only from the chain ring. It sounds from the motor.

 

[RustyMTB]

It's backlash in the gears. Standard (and irritating) with Bosch gen 4 motors. Here's my bike.

 

[Oupy]

Yep I'm always suprised when people say they haven't heard it on their gen 4 bosch! Any trail remotely rough and it's there. I even hear it just lifting and moving my bike around the garage!

You do tune it to a degree though once you realise its normal.