Eastway82 said:Yep, I reckon you need a 115 BB (you might get away with a 111, but I wouldn't bother trying. The Mirage (SCS) is is very basic but runs smoothly enough - steel cups though. I've just got one of these and it creaks - first time I've had that problem. I believe the Veloce is available in two types, both fairly cheap: SCS is exactly the same as the Mirage! AC-S has alloy cups and is preferable - I've had several of these and no problems.
I'd be inclined to go with the AC-S rather than shelling out the extra on the Centaur, especially if you've already got tools for the older type.
Incidentally, I think older Record stuff used 111mm BB rather than current 102, but I could be wrong. Also, some Centaur/Veloce etc doubles need a 115mm BB depending on exactly the relationship between seat tube and BB shell/rear stays. My 2005 Centaur double needed 115mm BB to get everything lined up and running smoothly.
I believe the Record cranks changed at the same time the SHAPE of the shifters (vs. "shape shifters"😉 changed -- circa 1998.
AC == Aluminum Cup ... SC, undoubtedly, means Steel Cup
An obvious difference in SOME of the Campagnolo Bottom Brackets is the TYPE OF TOOL that is used ...
At this point, I would let the TOOL that is used be my guide ... as stupid sounding as that is ...
I think that MOST of the current Campagnolo Bottom Brackets, regardless of group, use the same tool as is used for the cassette's lockring ...
The older (still being sold, but undoubtedly OLD STOCK) Bottom Brackets use a wrench that encircles the circumference of the BB cup. If you have the older tool, then that can be your guide ... but, since you have a Record crank, you probably use the "lock ring" tool ...
Again, I think the Centaur/Veloce/Mirage/etc. cranks use an asymmetrical spindle whereas the current (1998, and subsequent) use a symmetrical spindle ... so, although you can now buy a 111mm (?) Chorus BB, it will be symmetrical and your left crank arm will probably not be offset properly from the centerline -- the tapers ARE the same ...
NOT RECOMMENDED, but you can mount a Campy Veloce crank (or an older C-Record crank) on a Shimano BB ... the taper is the same, but it isn't ... same angles, but the Shimano's taper BEGINS LATER which means about 1-or-2 millimeters less of the Campy crank arm will be on the spindle (and, the Shimano crank arm would bottom out on a Campagnolo/Sugino spindle) -- so, a 113mm Shimano square taper BB could be used if nothing else were available as a substitute for a 115mm Campagnolo cartridge BB.