Technical & Reference Section > Tech and Restoration

Repairing fork thread

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bobafett:
Thanks fouronethreeoh! i might look into that if i'm not locked up for killing currio with his needle file  :LolLolLolLol:

currio:
Right, pi$$ taking aside, the thread for 1" BMX forks is either (I am still not sure)  1" x 24, or 26 TPI (threads per inch) BSC. (British Standard Cycle)
A BSC thread has 60° thread angles, as does the UNC, or UNF version.
There are still differences between these thread types, but this would only matter if we were talking new for new.
The bottom line is, in this instance, clearing the debris from the bottom of the thread (root diameter), and damage to the thread flanks.
Hence my suggestion to use a needle file.
The thing to remember here is that its relatively easy to remove metal, but care must be taken, as its not so easy to replace it.

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