Thread: Chain fell off rear derailleur - mean anything?
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Old 04-12-10, 08:43 AM
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cyccommute 
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Originally Posted by moose8
Today I was riding my bike with a mid-90s campy mirage rear derailleur - I was pedaling quite hard, probably going around 23mph at the time, when the chain skipped off on off the little wheels on the rear derailleur and kind of jammed in it. I've had many chains fall off before, but it's always been upfront. Does this signify something might be worn out or something?
You may have gotten smutz in the derailer or you may have a jockey wheel that need lubrication. I'd check to see if the jockey wheels turn freely without the chain on them.

You may want to check for a stiff chain link too. Your chain looks a but crusty.
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