Originally Posted by
Kapusta
You are going to need to give more details.
How much USE is on the chain and ring? Does the ring look worn down? What kind of ring is this? Pics? I dedicated 1x ring should not be dropping. Does this happen AS you shift? Does it matter if it is bumpy? Have you checked the chain for wear?
It happens when I shift to the smallest cog...Chain is original & probably needs to be replaced...