Chain suck - worn chainring and a new one

Phenomena of "chain suck", when a worn chainring doesn't disengage from a new chain quickly enough. Followed by a video of a new chainring - for comparison.

List of all the BikeGremlin YouTube videos, sorted by topic (and cycling/mechanics articles):
https://bike.bikegremlin.com/youtube/

Contents:
00:00 Chain suck, from several angles
01:15 New chain

More detailed explanation of the phenomena:
https://bike.bikegremlin.com/3306/bicycle-chain-wear-elongation/#5.1

If you have any questions, please use the BikeGremlin forum (I try to respond to every comment, but YouTube sucks at notifications, especially when it comes to any follow-up questions):
https://www.bikegremlin.net/

id: 0015