Despite the muddy day it was shifting perfectly. I had dropped down gears in advance of a hill and half way up there was a horrible sound.
Stopping I saw the derailleur had twisted back into the cassette. The hangar was straight before and obviously now bent as well.
I had to then cut the chain to turn it into a single speed to get home.
In for a chain, hangar and derailleur but curious of any ideas as to what might have caused this to prevent a repeat? Nothing obvious in terms of stick getting caught etc and would have expected chainsuck or similar to have dragged it forwards. It feels like the cassette has come a bit loose but unclear if this was before or after the derailleur turned to butter 🤣. It’s an ebike if that makes any difference.
Thanks!
by Due-Worker-3329
2 Comments
Bent chain link did this to me in the past. I had bashed the bottom bracket/crank on a rock step-up, twisted a link, it eventually caught and twisted the derailleur out 90 degrees.
Limit screw not set properly? The hanger might have gotten bent somehow and it was just enough for the cage to catch a spoke..
A guy on our group ride had this happen recently, luckily we had just started and he only had a one mile walk back to his car.