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How does a headset become out of adjustment?(6 posts)

How does a headset become out of adjustment?Kristin
Jun 10, 2003 12:48 PM
I was just gonna let this go, but I'm curious. I've put 200 miles on since the new fork went in. When I got the bike back with the new fork, everything was nice and snug, then something happened with the headset and it wasn't holding the fork snuggly. I ended up taking it to a shop to be adjusted because I was afraid I'd hose it up. But I'm curious how this can happen.
several possibilitiesDougSloan
Jun 10, 2003 1:12 PM
Could be the lower race was not firmly seated, the riding pushed it down.

Could be the headseat was not installed perfectly concentric, so that turning the handlebars eventually forced it loose.

Ordinary wear and tear; things loosen over time.

Perfectly normal. I'd re-check anything I installed after a few rides, and normally do some re-tightening.

Cheap threadless headset - PistaPdxMark
Jun 10, 2003 1:25 PM
I've been doing the re-adjust & tighten sequence a few times now with the headset on my Pista. The headset looosens, like it did again just today with a little "pop" when I was checking it. To check it I hold the front brake and push to bike forward & backward against th resistance of the front wheel. To tighten, I loosen the stem, tighten the headset down, then tighten the stem again snug.

Since it's happended a few times, it seems that the lower race ought to be set by now, so maybe some part is just not seated properly. Hmmm, I keep thinking I should just replace the headset, but maybe that's just bike money burning a hole in my pocket.
Jun 10, 2003 2:39 PM
I replace my Pista (threaded) headset, but mainly for a color change (silver), but also a slightly better one.

don't know. My King hs has never needed adjustment (nm)ColnagoFE
Jun 10, 2003 1:53 PM
Threaded or threadless?Kerry
Jun 10, 2003 4:49 PM
In addition to the possibilities suggested in other posts, if it's a threadless system, then things could loosen if the stem was not clamped tight enough. If a threaded system, the top nut might not have been tightened enough.