Noah Scape
09-11-06, 11:48 AM
A young man that volunteers with me at the bike library is ordering a headset for his Miyata 710 fixie... mid-80s. My guess is Campy not JIS. Anyone know for certain before he orders?
Classic & Vintage - Miyata 710... JIS or Campy
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tomacropod
09-11-06, 04:50 PM
what headset is in there now?
- Joel
- Joel
Noah Scape
09-11-06, 06:54 PM
If I knew what was in there, I wouldn't be asking the question. :rolleyes: I don't have access to the bike... this is a remote diagnosis.
Seggybop
09-11-06, 07:30 PM
I would think that Miyata, being a Japanese company, would use the Japanese standard (JIS). Other than that, no idea.
Fred Smedley
09-11-06, 08:04 PM
A young man that volunteers with me at the bike library is ordering a headset for his Miyata 710 fixie... mid-80s. My guess is Campy not JIS. Anyone know for certain before he orders?
Campy has British threaded HS's also. As far as I know Japanese Bikes use British threading.
Campy has British threaded HS's also. As far as I know Japanese Bikes use British threading.
unworthy1
09-11-06, 11:51 PM
Wait, let's clarify: are you asking what crown race diameter he will need? (JIS being 27mm and ISO/everythingelseexceptBMX being 26.4) Or are you asking what threading the HS will use, cause that's easy: it will be BSC, same as JIS. If question #1, I couldn't say for sure, I haven't worked on this very model/year Miyata and with a JP bike you never can tell, but I'd bet it's 26.4. Strictly a guess, I just reckon Miyata made so much for export that they probably opted for a more user-friendly HS crown race when shipping overseas. He should just order his from a source that will let him swap for the correct size, if need be.
unworthy1
09-12-06, 10:07 AM
Now I should clarify just a little, for 1" headsets JIS standard for ID of crownrace is 27mm, and 26.4mm is crownrace ID foreverythingelse INCLUDING BMX, I was thinking about the OD of BMX headset components, which are larger than those used for road bikes or old school Mtn. bikes.
lebowitz
09-12-06, 03:48 PM
FWIW: My Miayata 710 has a Tange Industries threaded headset and the person I bought the bike from said that it was a campy replica and could be rebuilt with campy parts.
T-Mar
09-13-06, 03:09 PM
I have seen both on Miyata. Before you ask, I have been unable to determine if there is a crossover related to a specific year or model level. You are just going to have to measure the old crown race to be sure.
top506
09-13-06, 04:30 PM
Whichever has the smaller diameter crown race is NOT what was on my Triplecross (90, maybe) and WAS on my '87 312. I found this out when I tried to swap them......:eek:
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