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  1. #1
    Senior Member
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    Damaged Master Link Causing Autoshifting

    My relatively new bike was shifting perfectly. All of a sudden, I go out on a ride and the chain starts dropping into a smaller cog by itself. I put it up on a stand and everything looks ok. I notice as i turn the pedals the chain hops at one particular spot. I notice that the master link is kind of catching in the cluster. I notice the side plates are sort of loose and the inside one seems possibly a little bent out. I guess I'd like to know how this happented seemingly out of the blue and is it fixable for tomorrow's ride? could I squeez the side plates with a needle nose safely?
    Thank You!

  2. #2
    Bikaholic blamp28's Avatar
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    Relatively new bike -What kind? more info needed in order to help.
    Trek Fuel XC MTB, Giant OCR Road Bike, Rans Screamer - Tandem

  3. #3
    coprolite fietsbob's Avatar
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    replace the damaged master link?

  4. #4
    Senior Member MudPie's Avatar
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    What brand chain/masterlink? Some brands have re-useable masterlinks (KMC, Wipperman), some are one-time use masterlinks (SRAM).

    As a habit, I keep a spare masterlink in my bag and tool box.

    You might want to check that the links in the area freely rotate.

  5. #5
    bike whisperer Kimmo's Avatar
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    You could prolly tweak it good with some pliers, but I bet it'll be difficult without long-nose vise grips, and prolly tricky to do right.

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