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Old 11-23-2021, 09:45 AM
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oliver1850 oliver1850 is offline
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Join Date: May 2010
Location: northern IL
Posts: 8,669
That sounds like a very late Colorado II, so late 1992. Does it have brake cable ports in the top of the top tube? 42 or 52? I can't imagine them making a 42 cm frame that wasn't a custom.

The combination of the slightly longer spindle and the JIS taper probably puts the crank about 5 mm outboard of where it should be. Both arms should be effected. Hopefully the crank tapers are intact and you can just switch to a
Campagnolo bottom bracket. The recent black Centaur or the older Athena are both easy to find and will work fine - as should the AC-H, AC-S, SC-S, Veloce, etc. I really like the Athena as neither cup has a stop, so you can adjust the chainline a bit if needed.
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