Hi guys,

Fitted a bigger cassette tonight and got a new chain for it. Used the usual biggest biggest dia. Gears and +2 rivets. However, the chain landed on 2 outer so I technically had to extend it by 1 inner. So potentially it is a bit looser. How do I navigate this as I have really just maxed out my b screw and it's still jumping off as you can see in the video? Would it hurt to just remove another link?

Chain issues
byu/Asleep-Net-6880 inbikewrench



by Asleep-Net-6880

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4 Comments

  1. Gangrapechickens on

    Without being there it’s hard to say exactly, but I’d try removing a link and seeing how it performs. It almost seems like it’s just barely too long which is what causes that.

    If you keep spinning does it happen all over the chain or only on that spot?

    Edit: on a second watch it seems the quick link isn’t engaged all the way. Check that first

  2. It’s the quick link. Hold the brake and pedal hard with the quick link on top of the drivetrain. Should give you a reassuring pop when it’s seated.

  3. RipNshreadGames on

    Let me get this straight, new chain, new cassette, old chainring? If that’s the case, you need to get a new chainring. As your drivetrain wears your chain stretches. The distance between the rollers gets larger. The chain then wears this new Gap into your chain, rings and cassette. If you use a worn chain too long, you will ruin your cassette and your chainrings. My advice would be to replace your chain rings to be completely fresh. And then purchase a chain checker tool and replace your chain every time it’s worn. Generally we call this the rule of threes. You should get three chains for every cassette and three cassettes for every set of chainrings. With single chain rings and much larger cassettes this fudges either way a little bit. But it’s a good rule of thumb. The key being to replace your chain whenever it’s worn. And the tool will show you.

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