Originally Posted by squirtdad

fwiw

I spent a lot of time on Ofmega crankset and bottom bracket research and experimentation when I was given a 'free" torpado super stradaa couple of years ago.

At best there is a lot of mystery and uncertainty including on velobase.

this is my understanding (which again is based on research of a voodoo subject and some personal experience)

Early Ofmega cranksets used a proprietary taper. The problem is no one can define exactly what early/old means. to quote sheldon "(Note: Old Ofmega/Avocet spindles were quite a bit skinnier/longer even than ISO. There are no modern bottom brackets that work with old Ofmega/Avocet cranks.)"

The ofmega cranksets from the 80's (again not precise) think competizone and CX (at least I hope CX as I just ordered a set on ebay) were essentially campy clones with ISO taper and they used the asymmetrical bottom bracket (118.5 mm spindle) like campy records did. The Mistral may be different