Star nut sizes?
#1
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Star nut sizes?
I'm installing my first threadless headset. Everything went on fine. Now I'm trying to install the star nut (star-fanged nut). It seems significantly larger than the inside diameter of the steerer tube. I'm game for installing without the special ram-tool. I'm sure I could do it with a socket and small maul. I just want to be sure that this nut really should go into this steerer. Do they come in more sizes than just for 1 1/8 headsets? Maybe I have a thickwall steerer... Just to see if I'm on the right track, I screwed in the bolt and centered it and tried tapping it down into the opening a bit. It didn't seem like it wanted to go in. Seems a good 1/16th larger in diameter or more. Do the flanges bend/fold in quite a bit? I can make sure my fork-ends are resting on a 2x4 so that force isn't harsh on them but I want to be sure. The friend who I got the frame, fork and headset from said it all went together but he has a big scattered shop... Doublechecking here... And trying to get this done now. Not that I'm in a rush, but sheesh. I hate to get rolling then get stalled out. Thanks! --JP
#2
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I'm installing my first threadless headset. Everything went on fine. Now I'm trying to install the star nut (star-fanged nut). It seems significantly larger than the inside diameter of the steerer tube. I'm game for installing without the special ram-tool. I'm sure I could do it with a socket and small maul. I just want to be sure that this nut really should go into this steerer. Do they come in more sizes than just for 1 1/8 headsets? Maybe I have a thickwall steerer... Just to see if I'm on the right track, I screwed in the bolt and centered it and tried tapping it down into the opening a bit. It didn't seem like it wanted to go in. Seems a good 1/16th larger in diameter or more. Do the flanges bend/fold in quite a bit? I can make sure my fork-ends are resting on a 2x4 so that force isn't harsh on them but I want to be sure. The friend who I got the frame, fork and headset from said it all went together but he has a big scattered shop... Doublechecking here... And trying to get this done now. Not that I'm in a rush, but sheesh. I hate to get rolling then get stalled out. Thanks! --JP
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If you look at this page:
https://www.speedgoat.com/product.asp?part=130534
it would appear that there are different size star nuts for aluminum versus steel steerers. Not sure that knowing that helps you much, but it does seem to be true that there is more than one size to consider for a 1 1/8" outside diameter steering tube.
https://www.speedgoat.com/product.asp?part=130534
it would appear that there are different size star nuts for aluminum versus steel steerers. Not sure that knowing that helps you much, but it does seem to be true that there is more than one size to consider for a 1 1/8" outside diameter steering tube.
#4
Senior Member
If you look at this page:
https://www.speedgoat.com/product.asp?part=130534
it would appear that there are different size star nuts for aluminum versus steel steerers. Not sure that knowing that helps you much, but it does seem to be true that there is more than one size to consider for a 1 1/8" outside diameter steering tube.
https://www.speedgoat.com/product.asp?part=130534
it would appear that there are different size star nuts for aluminum versus steel steerers. Not sure that knowing that helps you much, but it does seem to be true that there is more than one size to consider for a 1 1/8" outside diameter steering tube.
#5
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Thread Starter
My lame old calipers say the steerer has an ID of 31/32" (less than an inch). And my star-nut is 1 3/32". (A bit more than a 1/16" bigger than an inch.) So we're talking an overhang on all sides of 1/16", or a 1/8" diameter difference. Sound like the right thing? Sounds like it MIGHT be.
Or, do I have a steel steerer star-nut somehow? (My pal was a racer with high-end extra-light bikes. Why would he have a steel steerer fork? Maybe he got it accidentally as well...)
Thanks, JP
#6
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PS: Hey, thanks everyone -- it all worked out fine. I hit it a few times with a small maul using a small socket over the star-nut bolt and it went in dandy. I just wanted to be sure. So I'd say that 1/16" overlap all around means you have the right size. --JP
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MOST star nuts are for the 1 1/8" fork tubes... the 1 1/4" size are fairly rare.
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