#1
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Older headset size
Any one know what ,most first gen thredless headset sizes head set sizes are ,frame n qustion is first gen Surley Crosscheck in 631 steel .
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#2
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What exactly is the question? Stack height? Steerer OD? Head tube ID? Crown race size?
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#3
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I'm pretty sure that it will be 1 1/8". The Cross-Check came out when 1 1/8" was the most common size headset. I've got a Cross-Check from just a few years after they were introduced (I think it is first generation - its the pea green model), and it is 1 1/8".
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#4
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There were 1" Cross Checks. I have a Cross Check fork on a Nishiki that is 35+ years old.
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#5
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If you’re asking about 1” vs 1-1/8” threaded, that can be quickly assessed with a quarter, per Sheldon Brown.
A 1” threaded: A 1-1/8” threaded: Last edited by CO_Hoya; 01-17-2020 at 02:47 PM. Reason: Threaded, not threadless |
#6
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Inspired me to measure a quarter: 24.25 mm or .954".
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#7
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Quote:
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#8
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Ugh, you're absolutely correct. The lesson, as always, is that I'm an idiot.
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#9
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Older heaset size
I may have mispoke ,the one the pics are threadeded as far a i know mine is the strait smooth steerer , not with the nut on top. .so i ordered 1 1/8 but what came was to big ,what is the inner diameter of the head tube is what im after . Do i simpley measure across?
Last edited by shankldu; 01-18-2020 at 10:22 PM. |
#10
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You need to think about what you are asking and rephrase your questions a bit.
Are you asking for measurements on a headset or a stem? Threaded or threadless? A threaded steerer tube has a stem that goes inside, so you'll need the inner measurement. A Threadless steerer tube takes a stem that goes around the tube, so you'll need thew external measurement. A picture might help. |
#11
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Quote:
On a steel fork steerer, the inside diameter of the fork steerer is 22.2mm(7/8inch) on a '1 inch' fork and 25.4mm(1 inch) on a '1 1/8 inch' fork. But again, the sizes come from the OUTSIDE diameter of the fork steerer. You need a 1 inch threadless headset....
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