BBS02 loud noise once per pinion rotation

[hias9]

Today I ran my BBS02 the first time.
Unfortunately it has a loud noise once per pinion rotation. Video below.
I think the nylon gear is on the same shaft as the pinion, so it is also once per nylon gear rotation.
The motor is new, just regreased.

Video: Watch V_20240229_232626_ES3 | Streamable

When pedaling faster than the motor is turning the noise disappears.

Does anybody know what is causing this noise?
Could it be the freewheel inside the nylon gear?

 

[qwerkus]

Can't see the vid.

 

[tomjasz]

no go...

 

[sub7]

Maybe is something like this @hias9:

Have you solved yours?

 

[hias9]

No, it was something different. As mentioned before, once per Nylon gear rotation.
I just uploaded it here again:

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In the meantime I replaced the Nylon gear (although motor was completely new) which helped a lot and then I additionally installed a 0.2mm washer to reduce axial play of the Nylon gear which also helped.

 

[sub7]

Tkx for the reply I also have solved mine replacing the magnetic ring (maybe a simple cleaning would suffice)