Crown race - help!

[nickosdialled]

Hi.

Really struggling to fit a crown race to my forks, so now I am thinking its the wrong size.

I have a tioga expert CR headset, but dont know the crown race size - I don't have an accurate way of measuring.

I also bought these forks off ebay:

http://www.ebay.co.uk/itm/BANKRUPT-26-1 ... 588f6d1705

Could it be that one of these is non standard size? Can I just get a larger crown race?

Thanks in advance

 

[We_are_Stevo]

The problem you have is that your headset is a JIS (Japanese Industry Standard) whilst your fork is sized for a ISO (International Organization for Standardization)...

...if you hacksaw a slot in the crown race, thus turning it into a split-crown race, it will fit just fine; and be a lot easier to remove when the time comes

 

[nickosdialled]

I can really do that? Wicked - I'll give it a go

 

[We_are_Stevo]

Yes, I do it with all my crown races if they don't come like that...

 

[cce]

That only works for cartridge bearings mind...

 

[nickosdialled]

ah - I think that's me out then

 

[nickosdialled]

so next question - can i source a 27.0 m race. Seen them on evilbay... work across all headsets?

 

[sansarret]

You could get someone with a lathe to turn down the crown race? Unfortunately it would probably cost you more than the fork from a machine shop, unless you know somebody. Easy job.

 

[nickosdialled]

hmm - me thinks I need to lookout for a new headset. What a pain!

 

[We_are_Stevo]

That only works for cartridge bearings mind...

Good point - didn't think of that; bit 'clicketty-click' with loose ball races! :roll:

Make sure your new headset is ISO and you'll be fine...