Bicycle Mechanics - Rethreading quill bolt?
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I had forgotten that there was a bike mechanics category after I posted in the singlespeed/fixed forum. I figured this would be a more ideal place to post. I apologize in advance if this was covered already. Anyways, I need to trim a good portion of the quill on my stem in order for it to fit properly in my frame. (as you can see in the pic) However, I took it out to do some measuring and see where I would have to cut it to have it fit and it seems that the bolt isn't threaded where I would need it to be threaded. Is it possible to rethread the bolt with a die? I have a buddy who owns a shop and has the right tools to do so but have any of you guys done this before? Rethread the bolt that connects to the wedge?
04-30-08, 12:23 AM
Don't think I'd be willing to do that for myself, never mind recommending someone else do it.
If you can't find a compatible shorter quill bolt, I'd suggest just replacing the stem.
04-30-08, 12:32 AM
It shouldn't be a problem as long as the bolt has cut threads. If it has rolled threads, then no. But that is a nice looking stem in a nice long height like I have been looking for.
yeah, somebody filled me in with a little info on cut threads and rolled threads. hopefully, the LBS has those bolts tomorrow.. :(
Joshua A.C. New
04-30-08, 08:56 AM
Wasn't this covered, like, Monday?
Are the threads, in fact, rolled? If you checked and they are, then yeah, you'd need to replace the bolt. Or, I suppose, roll new threads if maybe you know someone with a machine shop.
If they're cut, go at it with a die.
04-30-08, 09:55 AM
Or, get a new stem and give me that nice long one. :D
think i may just sell it and try to get a shorter stem..$45 brand new nitto deluxe, 80mm reach, 26.0 clamp. somebody take this off of me :(
04-30-08, 10:52 AM
I've extended the threads on on a quil stem bolt before ad it worked fine. As long as the die is sharp, you should get good threads. (I think it is 8m x 1.25) Just test its fit and strength befre you ride it.
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