You are reading a single comment by @ihatelaw 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.
@ihatelaw
Does anyone know how I can stop my Miche Primato cranks unscrewing themselves from their Miche bottom bracket/Miche bottom bracket unscrewing itself from BB thread?
I think it's inevitable because of the way the threads on the bottom bracket shell match the threads on the bb itself; it just happens as you rotate the pedals. I spoke to a mechanic and he said it was an inevitable problem but I figure there must be a way to solve it. Or am I doomed to perpetually having to adjust/tighten the bb and/or the cranks themselves?
I've done a search on this forum but I don't think anyone's asked this question before. Will check on sheldon also. But the problem must have happened to anyone who uses the Miche Primato crank with this BB thread so thought I'd ask if anyone had the same issue and how they solved it?
I'm loath to ditch the Primato cranks as they're great otherwise. But this problem is pretty annoying. Reckon I've got a shot at getting a full refund from the shop (a chain shop not a sole trader so feel way less guilty) I got them from given that they fitted the cranks/bb, knowing that they would inevitably unscrew themselves in light of my BB thread, and only explained this to me a few weeks later. If I'd been a half-decent mechanic sure, I'd have been able to spot the problem immediately myself, but I don't think that argument gets the shop off the hook...