'83 Miyata 610 headset: JIS or ISO
06-08-24, 06:13 PM
#1
Senior Member
Thread Starter
'83 Miyata 610 headset: JIS or ISO
Quick question: did the '83 Miyata 610 come with a JIS or ISO headset? I measured the fork crown race at around 27.0mm. Am I right that this is JIS?
06-08-24, 06:31 PM
#2
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Join Date: Oct 2007
Location: Mid-Atlantic
Posts: 705
Bikes: 1956 Rudge Sports; 1983 Univega Alpina Uno; 1981 Miyata 610; 1973 Raleigh Twenty; 1994 Breezer Lightning XTR; V4 Yuba Mundo aka "The Schlepper"; 1987 Raleigh "The Edge" Mountain Trials; 1952 R.O. Harrison "Madison"; 1994 Concorde Aquila
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I'm pretty sure my '81 is JIS.
Phil
Phil
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06-08-24, 09:36 PM
#3
Senior Member
Thread Starter
Thanks for confirming. I had a hard time measuring the inside dia of the head tube.
Too bad it’s JIS. I have a complete Shimano 105 groupset from headset down to the hubs for this bike, but the headset is ISO.
Too bad it’s JIS. I have a complete Shimano 105 groupset from headset down to the hubs for this bike, but the headset is ISO.
06-08-24, 09:54 PM
#4
