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  1. corellispangolin on

    Does it feel like the chain is skipping when you pedal? It may be that the chain is worn out or “stretched”.

    May be worth having a close look at each link to make sure one isn’t bent or damaged.

  2. This can also be the chainring, not the derailleur.

    I think you can see chainsuck in the video. This usually means a worn out chainring. It can be remedied a bit by cleaning everything and checking the chainring for burrs and then deburr it with a needle file or shave off the burr with a sharp object like a pocket knife. But that won’t be a lasting fix. Just get a new chainring later.

  3. I had this exact problem recently after changing my chain. It was chain suck from a worn chain ring. New chain ring and casette and all was good!

  4. SaudiJohnny on

    Just a possibility, as this happened to me. But first a few questions.

    Have you ridden it since the new chain went on the bike with there being no issues?
    Does it happen in mainly the smaller cassette gears?
    If you rode it with non-issue before the flight, is there a possibility that you were in the larger cassette cogs and now you’re in the smaller ones where it’s happening?

    I ask this as my bike went into a bike shop and came out doing similar and after much head scratching the problem turned out to be that an incorrect chain was fitted. It was a 10 speed chain but for a mountain bike which is slightly wider. As soon as this was known and changed it rode perfectly. The issue only arose when I was in gears 8,9 and 10 on the cassette.

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