@PJay
The cassette didn’t seem to be loose.
@therevokid
I’ll check this today. However, everything worked perfectly until yesterday. Then, in a matter of a second, when shifting from 9th to 10th cog, the problem appeared. I imagine it can’t be chain wear since it worked perfectly before, and now skips all the time even when pedaling slowly.
@pdw
No chance of mixing cogs up. Cassette(+chain+others) were replaced at the same time in January, and worked perfectly together until now. Also, the old cassette was black coated.
Regarding the wear you are mentioning, no idea what could have instantly cause that when just shifting gears. I’ll everything apart today and look closer.
@mrjmt
Shimano CS-M771 and KMC X10, worked perfectly together since January.
@theotherjonv
Sorry, I had mixed up hanger with derailleur cage.
But regardless, a normal shifting shouldn’t damage any of these. And yes, all other gears work flawless.
@damascus
I checked the chain quickly but didn’t notice any stiff links. The slipping happens continuously, maybe 3-4 times per 360° pedal movement. No chance that many links suddenly got stiff at the same time. Chain doesn’t appear to be stretched…
How’s the freehold? Have the bearings collapsed?
Sorry, not sure what you are referring to.
This afternoon I’ll provide pics and additional videos, after cleaning the drivetrain completely.
Thanks everyone for the help !