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Old June 11th 18, 11:38 PM posted to rec.bicycles.tech
AMuzi
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Posts: 13,447
Default Miyata 712 headset?

On 6/11/2018 2:20 PM, Hank wrote:
(Wow, 5 years since I last posted here? Time flies.)

I just bought an '88 Miyata 712 frame and fork, which should be arriving later this week. As I assemble parts, the big question left is whether that vintage of Miyata would have used an ISO/26.4 or JIS/27.0 crown race. Obviously, I can throw a caliper on it when it arrives, but I'm curious if anyone knows offhand.

TIA


Yes original spec is JIS format 27.0/ 30.0, a very standard
thing. Nice ones start at $20.

That said, yes measure it as the system is designed such
that to use a more expensive (i.e. Campagnolo) headset one
cuts to the 26.4/ 30.2 format and someone may have done that.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


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