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Loose Threaded Headset(6 posts)

Loose Threaded Headsetthegeek
Feb 21, 2003 9:59 AM
I have a '00 GT ZR 4.0 with an aluminum fork and threaded headset that keeps coming loose. I've taken it to my LBS to have it adjusted 3x in the last two months and it's loose again today. I ride a fair amount (~100 mi/wk) on average roads.

Is this normal? Would an upgrade to a carbon fork and threadless headset help the situation?

Thanks for the advice.

-chris
Properly Tight is keyCalvin
Feb 21, 2003 11:29 AM
It is important the locknut be properly secure. If the column is a bit too long, it will press against the locknut/washers. See also http://www.parktool.com/repair_help/howfix_headset.shtml

The headset locknut torque should be about 360 inch-pounds, which is tight. Use a little mild threadlocker, such as Loctite #222 or #242 if in doubt. There is a torque bit available, but even without it, get the thread tight and it wont come loose.
Properly Tight is keyRusty Coggs
Feb 21, 2003 1:06 PM
Right, and if all else fails,there are topnuts availavle with a setscrew or other locking arrrangement.
This is probably blasphemy...brider
Feb 21, 2003 2:40 PM
... but I use a Gorilla locking headset nut on a Campy Record track group for just this reason. I've NEVER had adjustment problems with these types of top nuts.
Another trick.Spoke Wrench
Feb 22, 2003 7:12 AM
Sometimes you can fit another washer under the lock nut so that the lock nut is working on threads that are less worn.

I'm sure there are guys who will diaagree with me, but my experience has been that once a threaded headset starts coming loose, it's pretty much dead. I've had much better luck with threadless headsets maintaining their adjustment.
That's my experience as well.dzrider
Feb 24, 2003 5:57 AM
It only happened on one bike, but once it started coming loose tightening it so it stayed tight was not possible. The remedy was replacing the headset for $20.00 not the fork.