Singlespeed & Fixed Gear - Measuring Fork Crown/Race

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jonb
09-16-05, 03:37 PM
I need to get a headset for my keirin Presto frame. Scrolling through Businesscycles website I see all the standard threaded and threadless headsets and finally the hatta. The hatta states it is for 1" threaded and JIS fork crown race seats. A friend told me that covers 'all' keirin frames. Is this true? Whats the proper method for measurement?

Thanks!
Jon

jonb
09-16-05, 10:18 PM
Any help would be appreciated.
vobopl
09-16-05, 10:58 PM
I need to get a headset for my keirin Presto frame. Scrolling through Businesscycles website I see all the standard threaded and threadless headsets and finally the hatta. The hatta states it is for 1" threaded and JIS fork crown race seats. A friend told me that covers 'all' keirin frames. Is this true? Whats the proper method for measurement?

Thanks!
Jon
Park Tool howto is your friend:
http://www.parktool.com/repair/readhowto.asp?id=37 for crown race
search for headtube sizes in related articles as well.