Sheldon solicited information from readers to collect this data but that project is on hold until we set up a new mechanism for collecting and posting additional data. See the section for your brand of crank for details of the measurement system used. As far as crank interchangeability is concerned, the most important thing is the overall length, and the offset if the spindle is longer on one side than the other that's true of many older units.
These spindles are getting harder and harder to find. In many cases, it makes more sense to upgrade to an inexpensive modern cartridge bottom bracket. Shimano cartridge bottom brackets are typically coded with a model designation and two numbers: shell width and length.
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Joined: Jul I'm replacing most of the drive gear on my Avanti MTB due to wear and a bit of damage here and there. The issue I have at the moment is the old Acera front derailleur was Bottom Bracket mounted and the new derailleur is seatpost tube clamped.