Is this chainring wornout?

Page may contain affiliate links. Please see terms for details.

JackStraw

Active Member
Hi All,
Is my chainring worn out?
I have a jumping/skipping chain under load or uphill on some gears.
The chain and cassette has been replaced but this didn't resolve the issue, has helped slightly.
I found that clean chain with little to no lube is much less likely to skip. I mean it's pretty obvious but just wanted to add.

Screenshot_2026-04-27_20-39-44.jpg


Screenshot_2026-04-27_20-40-35.jpg


Screenshot_2026-04-27_20-40-08.jpg


Thanks
 

EckyH

It wasn't me!
I think it's worn out, because the teeth - especially in the first picture - are shark fin shaped already.
So the effective distance between two adjacent teeth is bigger than the distance between the rollers of a new chain which leads to the skipping you described.

E.
 
Last edited:
Top Bottom