Originally Posted by
botty kayer
I also note that in the comments on Velobase for these cranks someone says the earlier version had "distinctive curved arm with obvious flare at pedal end; other similar models do not seem to be as flared". I thought maybe this flare would explain the longer axle, but mine don't seem to be more flared than the later Chorus, so I'm still not 100% which axle length I need.
The ‘flare’ that the commenter was commenting on is seen from looking at the cranks directly at the face, not from the side, so it has no bearing on spindle length. Having said that, it’s a subtle difference, not really an identifier.