Thread: New Paramount problem - Headset doesn't fit.
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Old 05-01-12 | 02:23 PM
  #15  
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miamijim
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Originally Posted by OldSchoolGuy
The bike is a 1970 P13. This is my fourth bike build over the past thirty years. The others were an Olmo, a Gios, my Ciocc, and now this Paramount, so I know headsets are a press fit, but this one has me baffled. The I.D. for the fork race is .002" smaller than the O.D. of the fork. The next problem is with the cups. Their O.D. is .008" greater than the I.D. of the head..

Thanks again,
John

The fork race is .05mm smaller than the fork, I think that's well within proper tolerance. The frame cups are .2mm bigger than the frame, I think that's a probelm.

I've tried installing ISO/BSA 30.2 cups in a JIS 30.0 frame and they dont fit.
Last edited by miamijim; 05-03-12 at 12:54 PM.
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