Bosch Performance CX ticking sound while keeping pedals and wobbling chain. Sound record attached.

[Dovidas]

Hi,
Just got me new Cube Reraction Pro. Noticed, that when im not pedaling and standing on pedals, some ticking noise comes out from engine area. Today i tried to cause ir by swinging chain and same ticking noise appeared. Is it common for these engines?
Can it be some friction plates inside engine? Because while im pedaling not a single noise comes out.

Attached recording of sound which comes out when im keeping pedals tight and rapidly pushing chain like in photo.

Thank you

 

[Purple parznip]

Hi,
Just got me new Cube Reraction Pro. Noticed, that when im not pedaling and standing on pedals, some ticking noise comes out from engine area. Today i tried to cause ir by swinging chain and same ticking noise appeared. Is it common for these engines?
Can it be some friction plates inside engine? Because while im pedaling not a single noise comes out.

Attached recording of sound which comes out when im keeping pedals tight and rapidly pushing chain like in photo.

Thank you View attachment 156063

First thing i would check,is everything tight and torqued up,just because its new doesnt mean its been built up properly

 

[Bear-uk]

Take it back to the shop and let them sort it!

 

[Dovidas]

First thing i would check,is everything tight and torqued up,just because its new doesnt mean its been built up properly

I was at seller, checked everything.
Seems like when chain getting tightened, something inside motor is catching gear to start to spin it.

 

[Dovidas]

Take it back to the shop and let them sort it!

They said its perfect
And i have another bike, doing something familiar to this sound, but no so often and loud.

 

[Bear-uk]

I was at seller, checked everything.
Seems like when chain getting tightened, something inside motor is catching gear to start to spin it.

If you mean the chain is rotating when the back wheel is rotating and making the motor sound like a ratchet noise then if so it's the cassette freehub that's too tight and not freewheeling correctly.
If it's got the Gen 4 motor fitted then they are noisy when freewheeling down bumpy tracks.
Only other advice I can suggest is to use it.
A common statement in the motor trade was to Kodak it.
Ie let it develop and see what it's like after you have put a few miles on it!

 

[Dovidas]

If you mean the chain is rotating when the back wheel is rotating and making the motor sound like a ratchet noise then if so it's the cassette freehub that's too tight and not freewheeling correctly.
If it's got the Gen 4 motor fitted then they are noisy when freewheeling down bumpy tracks.
Only other advice I can suggest is to use it.
A common statement in the motor trade was to Kodak it.
Ie let it develop and see what it's like after you have put a few miles on it!

Yes it have 4 gen CX. Basically it making this sound when freewheeling down bumpy track.
While waiting for answer here, i have found something familliar in another thread.

Bosch CX gen4 noise when engaging pedals?

I've had my new bike for about 2 weeks but just thought I started to notice a new sound from the pedals/motor when it first engages moving forward (motor on and off) I took off the chain so it's easier to demonstrate and recorded this video. I know it's a bit louder because of the echo, but is...

www.emtbforums.com

So i hope its ok. But its still annoying.. i would like to ride in silence rather

 

[Bear-uk]

If you watch one of my YouTube videos you can hear the Gen 4 sounding like it's trying to destroy itself on overrun.
Stephen Foster MTB is my channel.

 

[Dovidas]

If you watch one of my YouTube videos you can hear the Gen 4 sounding like it's trying to destroy itself on overrun.
Stephen Foster MTB is my channel.

I was calm before, but now in panic after your reply
So my engine will be destroyed soon?

 

[Bear-uk]

I was calm before, but now in panic after your reply
So my engine will be destroyed soon?

No, it just sounds worse than it actually is because the bike frame is amplifying it

 

[Dovidas]

No, it just sounds worse than it actually is because the bike frame is amplifying it

Perfect. Thank you for your support and help

 

[Lee Dove]

Hi,
Just got me new Cube Reraction Pro. Noticed, that when im not pedaling and standing on pedals, some ticking noise comes out from engine area. Today i tried to cause ir by swinging chain and same ticking noise appeared. Is it common for these engines?
Can it be some friction plates inside engine? Because while im pedaling not a single noise comes out.

Attached recording of sound which comes out when im keeping pedals tight and rapidly pushing chain like in photo.

Thank you View attachment 156063

That sounds like the Freehub/ratchet inside the motor working normally.