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crown race re-installment

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crown race re-installment

Old 09-09-08, 03:51 AM
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Marcusr
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crown race re-installment

I just had my frame resprayed, and it seems they've been a little vigorous around the top of the forks, as the crown race no longer fits - it's marginally too loose. Any tips on my options? Maybe a little paint or other treatment to give the race something to snug onto? If so, what to use? Or am I going to have to get a new headset?

Very grateful for any advice, specially if this is something you've previuosly dealt with successfully.
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Old 09-09-08, 04:42 AM
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If necessary, you may purchase just the crown race. For example JensenUSA is presently showing 17 parts in this category.
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Old 09-09-08, 07:45 AM
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Originally Posted by Marcusr View Post
I just had my frame resprayed, and it seems they've been a little vigorous around the top of the forks, as the crown race no longer fits - it's marginally too loose. Any tips on my options? Maybe a little paint or other treatment to give the race something to snug onto? If so, what to use? Or am I going to have to get a new headset?

Very grateful for any advice, specially if this is something you've previuosly dealt with successfully.
That doesn't make sense. If they added paint to the area around the fork crown, the race should be too tight. Are you sure the race wasn't split while removing it?
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Old 09-09-08, 08:01 AM
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Do you mean that perhaps previously the crown race was tight because there was paint or excess braze on the steerer, which is now gone? Do you know if it's the original crown race? If so, and it's now not a tight fit, you could use some Loctite. If it's not the right size, measure the steerer diameter at the fork crown and see which crown race you really need here.
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Old 09-09-08, 10:13 AM
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You don't say what kind of frame it was but be aware of the ISO vs. JIS headset issue. If the fork is JIS then the ISO race will be too loose as it has a larger seat diameter.

Of course if it is the original then it should be a tighter fit due to the paint, as oldyellr said. If some material was removed and gap filling loctite isn't enough you can use a soda can shim to make it work.
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Old 09-10-08, 03:01 AM
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Thanks chaps
It is indeed the original race, and I can see no sign of splitting, so I think there must have been some material on the crown that has been removed by pre-spray shot-blasting, and this hasn't been replaced by the spray. I reckon there's no more than a tenth of a millimetre in it, so loctite (threadlock?) sounds like a good bet. I'm going to try that.
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Old 09-10-08, 06:45 AM
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Originally Posted by Marcusr View Post
Thanks chaps
It is indeed the original race, and I can see no sign of splitting, so I think there must have been some material on the crown that has been removed by pre-spray shot-blasting, and this hasn't been replaced by the spray. I reckon there's no more than a tenth of a millimetre in it, so loctite (threadlock?) sounds like a good bet. I'm going to try that.
Thread locking compounds don't work well if at all for applications like this. What you need here is a retaining compound like Loctite 680. It's exactly what the stuff is made for, and it works very well.
I use it regularly for jobs like this.
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Old 09-15-08, 02:35 AM
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Never heard of retaining compound before, but I have now and it works a treat.
Thanks Dan
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