Join Date: Jun 2010
Location: Arlington, MA, USA
Bikes: 1981 Panasonic DX-2000, 1986 Cannondale SR500, 1991 Specialized Crossroads
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What kind of BB do I have?
I have two older Japanese bikes: A Fuji from 1977 and a Panasonic from the early 80's. While the Fuji came with cottered cranks, both shells seem to be threaded the same, as I can interchange the cups: Fixed cup is left threaded; adjustable is normal. The Fuji is 68mm wide; the Panasonic is 70mm. The diameter, best I can measure (no calipers) is 34mm. I can't make these measurements fit Sheldon's table
(which has no "Japanese" entry). Closest fit would seem to be Swiss?!? Anyone have good knowledge on what these might be? Or do I need to bring it in to a shop to have a "pro" tell me? Trying to figure out what my replacement options are, if any...