No problem on the way to the train, but when I unfolded at the other end, the jockey wheel on the tensioner had gone AWOL!
Did I fold it strangely? How would I have put enough force on that to break it?!
Do you know which OEM or aftermarket replacement part would work?
by EnvironmentalSwan628
4 Comments
Look for Brompton tensioner
Haven’t seen that happen
Is it a P Line?
It’s not an individual spare part but we’ll ask Brompton if it can be got as a separate item (they do them for the older 2 speed derailleur)
But it shouldn’t fall off – the spare would be for worn jockey wheels
The complete thing is available
https://brilliantbikes.co.uk/brompton-chain-tensioners/4856-brompton-advance-derailleur-chain-tensioner.html
Because the wheel moves and guides the chain we haven’t seen any third party wheel – but I’m sure someone on Reddit will have!
Yep, happened to me too. Make sure you used ‘thread lock’ if you fit one yourself