I got a Norco Scene 3 secondhand a month ago, and have been riding it consistently. While downshifting to the lowest gear on an uphill climb, the rear wheel suddenly locked up and wouldn’t move.
I checked it out and the derailleur was twisted. The hanger seems to be intact, but a cyclist nearby told me that it’s lost all tension. I took it to a mechanic but he said he didn’t want to twist it back in case it broke. I took the chain off the cassette to roll it. I’m looking to replace the part.
The rear derailleur is a Shimano Tourney TY-500 (7 speed). The shifter & cables seem to be intact because they click when I press them. And, I can drag the bike on gear 7, but if I shift to a different gear it locks up and doesn’t roll.
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Is only the derailleur broken or could something else also be an issue?
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Should I get the same derailleur or is there a better one (with minimum surgery on the bike)?
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What could have caused this to happen? Can servicing prevent this sort of fault in the future?
(Perth, AU based)
by One-Monitor9682
1 Comment
If you were shifting to the lowest gear, it could be the derailleur came too close to the spokes and caught in them, I see this a LOT with poorly adjusted derailleurs. If the derailleur hanger is unbroken and no spokes seem damaged, you can just replace the derailleur itself.