Cycled up to work today and have an odd jumping thing going on. I’m not the most mechanically minded but have usually been able to sort something out. This one has got me baffled! Any hints and diagnoses that you wonderful people could give? Cheers 😊
(P line 12 speed)
Chain issue, tensioner problem?
byu/DarkNightAlpaca inBrompton
by DarkNightAlpaca
5 Comments
Check if particularly that chain link is stiff.
i would suggest checking if that’s caused by a specific ling and if it’s well oiled and isn’t blocked by any debris or rust.
also, chain wear beyond 0.7% or so might be causing similar jumps – check and replace as needed
Perfect, I’ll have a look at the chain and find the stiff link when I get back. Hopefully that will fix it. It’s a fairly new chain so may have some debris stuck in there…
Look’s like a stiff link or potentially not a fully closed quick link would cause symptoms like you’ve exhibited.
stiff chain , locate the link and gently bend the chain : [https://www.youtube.com/watch?v=25gP6PmxhKI](https://www.youtube.com/watch?v=25gP6PmxhKI)
EDIT : my bad , other already reply