Most recent activity
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Wizardry!
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Is this the devils work? How on Earth did you get hold of that?!
Thanks! -
Not sure what you mean, but yes please!
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Yeah good point.
I have a feeling it’ll need to be more like 6.8-7.0mm I need for the flanged section. That’s what the current, non- ruined end of the pins I’ve taken out measures with a digital vernier. -
HAhaha... you’re very funny. ;-)...
Evans don’t have the hinge tool, but do sell the pins. Which, according to Brompton, they’re not allowed to sell unless fitted in store. It’s a “supply and fit” part, which I’ve ordered from their website. (Shhhh)tbf, the mechanics and staff at Evans in Norwich have been really very helpful. I can’t speak for their mechanical work, but the customer service (considering I hadn’t bought anything in relation to this hinge) has been great! They seem to think that of their London shops has the tool...
I guess it’s just not necessary to equip all stores with a specific tool that might not see a lot of use.They will have reamers for other jobs I’m sure, but I like the idea of having the tools myself. There’s been a few occasions over the years when the ability to ream bike stuff and metal work would have been handy.
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Thank you, Dogtemple and 91010.
It’s slowly becoming clearer.There’s nowhere local (Norwich) who has the tool to carry out the hinge insertion. So I would have to send it off (£20 postage at a guess) plus parts and fitting (£40 apparently).
To do the work myself will cost slightly less, and I’ll be slightly more knowledgeable in the world of flanged hinge pins! I am a patient and logical, mechanically minded/experienced person, so I’m not going to rush this and do it badly. That’s why I’m gathering all the info I can before attempting anything. And anyway, I have a week before it comes back from the powder coating shop... plenty of time to prepare!
I’m imagining a G Clamp and a ballbearing (of a size very slightly larger than the eventual flange opening) to squash the flanged part evenly into place. Obviously this is going to be a homemade, one-off setup, so my invented tool doesn’t need to be super convenient to use.
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Managed to buy some from Evans... although I hope I’ve got the correct size. Guess I can return if not.
Any idea what size reamer to use? I understand what reaming is and how to do it, but not sure how to select the correct size for this specific hinge pin. The pins that I removed are 6.05mm and 6.14mm at the main part of the shaft, so I’ve ordered a 6.0mm and a 6.1mm from Evans. Obviously the reamed section needs to be wider to allow for the flanging to get a grip. (Are these the correct terms?... I’m just part time mechanic of cycles)
I understand both points of view. On one hand it’s a very simple and non-specific, hinge based task. While on the other I could find myself with a badly connected hinge that causes a fatal accident.
I will not be “twating” it in :-)
I’m working on a home improvised press type tool, along with various combinations of things I’ve read about on the deepest, darkest web. (This info about Brompton hinge pins is not readily available... they don’t want us to know how to do it... totally understandably!!) -
That’s odd. I’ve spoken to several people (including Evans) who won’t sell the pins to me without fitting them themselves. Apparently it’s a condition of being a Brompton dealer... I’ll try buying a couple from that link. Thanks!
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Thanks for the info.
Apparently you can’t but them without having them fitted by a licensed mechanic/dealer. Damn it!!Makes sense I suppose. It’s a pretty critical piece of the bike. Wouldn’t want to fit it badly myself then the frame falls apart when I’m doing 30mph down some sweet hills!
Anyway, thanks for the advice.
Yeah let us know what you discover. Thanks!