You are reading a single comment by @CYOA and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
CYOA
That's usually suspension related - either sway bar or ball joints if it is in time with the wheels. Check and see if it happens over bumps because that usually indicates shock failure of some description. If you are on the original suspension then those are the most likely culprits.
Limp mode would not have ruined the rear diff.