Bicycle Mechanics - Damaged Master Link Causing Autoshifting
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08-27-11, 06:16 PM
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?
08-27-11, 09:22 PM
Relatively new bike -What kind? more info needed in order to help.
08-27-11, 11:05 PM
replace the damaged master link?
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.
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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