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Determining size of headset's crown race inside diameter

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Determining size of headset's crown race inside diameter

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Old 09-14-08, 03:26 PM
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trevorbikes
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Determining size of headset's crown race inside diameter

It's time for me to replace my 1" threaded headset. I'm looking at Sheldon Brown's headset size chart and can't figure out if I need a 26.4mm or 27.0mm crown race inside diameter. How do I know which one will apply to me? I don't have any measuring device that can give me that accurate of a reading.

I have 2 bikes that will be getting new headsets: a 1980 Fuji S12S and a Maruishi (date unknown).
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Old 09-14-08, 03:35 PM
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rhenning
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Take the fork to a place that has such a caliper. LBS Maybe? Roger
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Old 09-14-08, 04:35 PM
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What make and what vintage are the bikes? That information can help narrow down the probability as to which size headset you need.
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Old 09-14-08, 06:15 PM
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Originally Posted by HillRider View Post
What make and what vintage are the bikes? That information can help narrow down the probability as to which size headset you need.
I have a 1980 Fuji S12S and a Maruishi Roadace 505 (date unknown).
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