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Fork Threading - Need another 1/2"(8 posts)

Fork Threading - Need another 1/2"TerryF
Jul 27, 2001 11:59 AM
Anybody have any idea on how to get another 1/2" of thread on a chrome plated touring fork. Local bike shops won't. Can't find a die with that fine of a thread.
Thanks,
Terry
new LBSak
Jul 27, 2001 1:11 PM
go find a better LBS, the one I worked at in chicago did it all the time (well, twice a month anyway) but don't go there, they are mean!
It's harder than it looks...TJeanloz
Jul 28, 2001 9:44 AM
It's true that Park makes a tool to thread forks, but the thing costs like $25, and is effective for about 1 cm before it gets too dull to do its job and needs to be thrown away. Threading chrome, or any steel, is very tough work- I don't know any LBS' that want to do it. We have a local machinist that we recommend people to.
re: Fork Threading - Need another 1/2"Atombomber
Jul 27, 2001 3:16 PM
Like said, find another bike shop. If that is not possible, Park Tools offers dies, so you might want to purchase one, if you know how to do it. Don't know the prices though.

http://www.parktool.com/

http://www.parktool.com/tools/FTS_1.htm

http://www.biketoolsetc.com/index.cgi?c=Tools&sc=Fork&tc=Column%20Threading%20Dies&id=302469666103
re: Fork Threading - Need another 1/2"Rusty Coggs
Jul 27, 2001 5:00 PM
The chrome might be the tough part. Very hard. A bike shop did one like that for me. End result was something a chimp could have done with a broken file. Shop monkey did it. Shop manager bought me a new fork.
Is spacing not an option?TNC
Jul 29, 2001 8:08 AM
I may be missing something here, but can't you space it for that 1/2" between the main nut and locknut? I wouldn't recommend much longer heights on a quill stem setup, but 1/2" is not too much. There's probably already a small spacer in that spot anyway. Just adjust your minimum insertion line to compensate for that 1/2" you stacked. Depending on your quill/stem height and angle, at worst you might need to replace it to get the exact position you had. As to cutting threads on a steerer, it's not fun, but we've done it on 1-1/8" steel steerers at the shop before. One problem is that the cutting die holding tool is also quite expensive--you just don't get a big pair of vice grips to turn the die.
Doh!--you can tell...TNC
Jul 29, 2001 5:57 PM
I don't mess with quill/threaded steerers much anymore. I wasn't picturing the problem correctly. Oh well, the part about the die tools and thread cutting still apply.
This is a "No win" for the bike shopSpoke Wrench
Jul 30, 2001 6:23 AM
The dies that everyone who hasn't done it are talking about specifically say not to try to cut chrome plated parts. The chrome just eats up the tools.
Secondly, at it best this is hard work to do by hand. If the shop tried to charge you a reasonable hourly rate for the amount of time it took to do the job, you'd probably scream about getting ripped off.

Bike shops make no money on the work that they turn away. If they decline to take a job, you can bet they have a good reason based on past experience.