One inch threaded xc pro headset please if anyone has one available?
Cheers,
BB
Cheers,
BB
one-eyed_jim":3rlrcufg said:I've got one. Pretty sure it's JIS, but I can find it and measure. Are you after JIS or ISO?
one-eyed_jim":24vkxsnx said:I've got one. Pretty sure it's JIS, but I can find it and measure.
Unfortunately not. JIS headsets are pretty common on older Japanese-made bikes. The threads are the same as ISO, but the press-fit dimensions (especially the crown race seat) are different.BoyBurning":57ye44ha said:I thought JIS only applied to bottom brackets?
My Japanese-made '92 Stumpjumper Comp was JIS. I don't know about the later bikes with 1" headsets, but I imagine anything Specialized made in '92 or before is going to be JIS.It's to fit Specialized threaded forks, so would imagine it's ISO, but the forks were probably made in Japan, so it could be either...!
The threads are all 24tpi. The simplest dimension to check is the crown race seat - 27.0mm for JIS, 26.4mm for ISO:What's the easiest way for me to find out? Do you know the thread counts?
As far as I know there was only ever one standard for 1 1/8":DoctorRad":2ynnwx89 said:Is there more than one standard for 1-1/8" headsets, and if so, where can I find the specs