Hi
having a tidy up and have found 5 old 5 hole rings in the 'box'.
By comparing I think I have AN inner (stamped truativ 22) - which has smallest diameter 5 bolt holes, 4 other with same bolt diameter (I think middles and outer - a shimano m9 32, csp3 32r and csp3 42r, guess USA 44) and last of all a tioga 38 - which has the largest bolt hole diameter.
Did 5 bolt cranks have 2 bolt positions ie inner/middle+outer combined ?
?? any clues - is the tioga an older style where they changed crank bolt diameters (or is it the other way around)
5 bolt had 2 standards, compact drive [CD] which is the smaller diameter and ATB, which is the larger of the 2 standards. the two are not compatible and need different cranks
3 standards for MTB actually, Campag and Suntour also did a version of compact drive called micro drive, same bolt pattern for middle/outer rings, but different for the inner.
3 standards for MTB actually, Campag and Suntour also did a version of compact drive called micro drive, same bolt pattern for middle/outer rings, but different for the inner.
granted, but who would use anything but shimano 😉