Technical & Reference Section > Tech and Restoration

1" threaded forks , stripped thread . Can it be fixed ?

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Rob1:
Has anyone ever fixed a pair of forks where the thread has been stripped ?

750Rush:
First of all, have you tried a spacer before thiniing of repairing the stripped thread? A 5mm spacer may be sufficient. Failing that, metal epoxy can be uesd to re-build the stripped area and then it can be re-threaded. the difficulty will be finding someone who can re-thread to 1" as it is quite a large thread.

Discostu:
Anything can be fixed. I personally wouldn't touch metal epoxy. Defiantly not on a pair of forks. The best thing to do is to take them to an engineering shop and have them machine the head tube out of the legs. Then have a new head tube made up and welded in place. Or remove one from another set of fork. And have that welded in place. But check the headtube is the right length first. This may sound a lot of work. But if they are a rare set of forks then it's worth getting it done properly.   :daumenhoch:

MartyC:
Or go to a decent welder and have him fill weld over the affected area and then have then re-threaded; Park Tools do a thread kit for re-tapping threads on forks so a decent bike shop that uses Park tools should be able to do the repair for you.

mattbloke:
the park tools toll is about £160  :idiot2: i have a die and handle for fork threads, but andy (58delray) has it at the mo. pop up a pic of the damage. i had a chunk of damaged thread on my kuwahara exhibitionist forks, but after a few pases with the die, they adjust and ride beautifully  :daumenhoch: it was just the last few threads that were really causing the problem, so a run down them may work for you too :)

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