Originally Posted by
CaptainCool
Bump since I think the same thing happened to me, see attached.
I have no idea how this happened. It's an old used fork with a basic, bought-new headset. I've commuted daily on the bike for over a year since I replaced the headset. Suddenly it started loosening up while I ride. Tightening the top nut just hits the stop, even after I added two spacers to the stack.
I'm willing to replace the fork, but I think I might have a hard time finding a shop that stocks used parts around here. Would this eventually stop loosening if I added more spacers? Could I add another threaded nut / old top race to the stack, to lock against the top nut like the current top race is supposed to?
That type of damage usually is the result of riding with the headset loose. Spacers won't fix the problem since there is insufficient thread to hold the threaded cup in place. I've fixed many forks like this by melting brass into the damaged area and cutting new threads.