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I'm away with work at the moment and have bought some forks without measuring what size steerer I will need! (I can't believe it) the frame is a large and the steerer on the forks is 175mm.
A Google shows it has a 1.125 inch steerer.
My large cham has 130mm of head tube, with a cane creek headset + 10mm of spacer + easton vice it's 210mm total (205mm ish steerer).
You've got 45mm of steerer to handle the headset + clamp - EPIC FAIL...
my actual headtube is 130mm and its 155mm with a CK headset, overall size of 205mm with a 50mm stem
BTW - its a large chammy
oh dear I want to post that picture of nelson, but I feel sorry for you. can you back out of the deal explain to the seller, if not sell them on.
Whoops!
its gone very quiet ......... [img] 
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The steerer isnt long enough to be safe. On my old large Chameleon I calculated I needed 185 min for the top bolt of my Thomson to be clear of the top of the steerer.
Thanks guys, I havnt paid for the forks yet (the guy ended his eBay auction early for me as well) I feel really guilty. I have not paid yet (luckily) so I'll just have to offer to cover his listing fees for ending the auction.
So from Reading commets above I think I'll need a 200mm min to be safe?
Thanks for all your prompt replys as I was just about to pay!
how tall is a thomson stem? I know the Sunline stems are relatively short (about 38mm I think) and coupled with a short headset (Crank Bros maybe) then you may get away with it - an expensive solution though (I do have the aforementioned stem second hand if you're interested though 😉 )