Star nut keep coming out!
09-20-10 | 12:57 AM
#1
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Pro Paper Plane Pilot
Joined: May 2009
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Star nut keep coming out!
So I finally got my rigid fork to replace my suspension fork. However upon tightening the top nut onto the star nut, it is lifting the star nut out of the steer tube. I don't get it. Do I have a faulty star nut or am I doing it wrong? I have not tighten the stem bolts yet.
btw, the star nut came with the fork.
btw, the star nut came with the fork.
09-20-10 | 03:46 AM
#4
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From: Vancouver
Bikes: NOYB
The star nut you're trying to use is likely for an aluminum or size-down-from-yours fork steerer. Swap it for one a size larger. It will need to be pounded in with an installer tool (to keep it straight and at the correct depth) and a mallet.
09-21-10 | 12:04 AM
#9
Low car diet
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From: Corvallis, OR, USA
Bikes: 2006 Windsor Dover w/105, 2007 GT Avalanche w/XT, 1995 Trek 820 setup for touring, 201? Yeah single-speed folder, 199? Huffy tandem.
Is there a gap between the top of the steerer tube and the top of the uppermost spacer or stem (whichever is on top)? You need 2-3mm there to ensure the headset can be preloaded adequately before the top cap butts up against the steerer.
09-21-10 | 12:28 AM
#11
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stem needs be proud above the end of the steerer tube, though a spacer above the stem is as good.
star nut needs be inset down the steerer tube ~6 mm .. if Further in .. just get a longer bolt ..
star nut needs be inset down the steerer tube ~6 mm .. if Further in .. just get a longer bolt ..
09-21-10 | 01:15 AM
#12
Low car diet
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From: Corvallis, OR, USA
Bikes: 2006 Windsor Dover w/105, 2007 GT Avalanche w/XT, 1995 Trek 820 setup for touring, 201? Yeah single-speed folder, 199? Huffy tandem.
Vice-versa. The steerer must end below the uppermost spacer/stem. If the top cap butted up against the steerer, how could the bearings preload? For an extreme example to make the point, what if you had no stem or spacers; the headset would be super loose because there's no way to compress the headset.
09-21-10 | 01:23 AM
#13
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From: Melbourne, Oz
Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231
Top cap needs to be pressing down on either the stem or a spacer rather than the steerer in order to preload the bearings.
09-21-10 | 05:26 AM
#14
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This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
09-21-10 | 08:45 AM
#15
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Pro Paper Plane Pilot
Joined: May 2009
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Thanks Jive and Kimmo. I didn't know that the top of the stem must be a bit higher than the top of the steer tube. I thought it needs to be flushed together. I will try it later today. Hope that is all it is.
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