Miyata 610 headset 1986?
03-13-24, 09:17 AM
#1
Junior Member
Thread Starter
Join Date: Jun 2009
Location: Osaka, Japan
Posts: 129
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Miyata 610 headset 1986?
Last week I bought Miyata 610 frame for $20. It is red with a gray head tube which suggest that it is from 1986. I am using the parts off a donor bike, a large Nishiki Cresta that was already disassembled. The headset from the Cresta is beautiful, but slides too easily into the head tube. I have pressed probably 20 headset in over the years, so I know the Cresta one is too small. I would assume that the Cresta is JIS and the 610 ISO? The frame came with the lower bottom race, but missing the top. So, I need a new headset. Is there anything else that I should be aware of when ordering a new one.
03-13-24, 10:04 AM
#2
SE Wis
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,517
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2747 Post(s)
Liked 3,401 Times
in
2,058 Posts
Last week I bought Miyata 610 frame for $20. It is red with a gray head tube which suggest that it is from 1986. I am using the parts off a donor bike, a large Nishiki Cresta that was already disassembled. The headset from the Cresta is beautiful, but slides too easily into the head tube. I have pressed probably 20 headset in over the years, so I know the Cresta one is too small. I would assume that the Cresta is JIS and the 610 ISO? The frame came with the lower bottom race, but missing the top. So, I need a new headset. Is there anything else that I should be aware of when ordering a new one.
03-13-24, 10:31 AM
#3
Senior Member
If it were me, I'd beg/borrow/buy a set of calipers (digital versions are both fairly accurate and cheap these days) and then check the (a) top head tube ID, (b) bottom head tube ID, and (c) crown race OD at multiple points to be sure what type you need. This would also let you know if you're dealing with an ovalized headtube bottom.
As @dedhed says above, you also need to measure your fork's steerer tube length and thread lengths and your headtube length, then figure out the min stack height your existing fork steerer will support. If the steerer was cut fairly short that may limit your choice of replacement headsets; if fairly long, you may need spacers.
Best of luck.
As @dedhed says above, you also need to measure your fork's steerer tube length and thread lengths and your headtube length, then figure out the min stack height your existing fork steerer will support. If the steerer was cut fairly short that may limit your choice of replacement headsets; if fairly long, you may need spacers.
Best of luck.
