Originally Posted by
rootboy
Thanks guys. Wish I could justify the cost of a Sutherlands but it isn't in the cards. So, if I understand correctly, a BB that currently uses thin cups and a 68 spindle, would take something like a 64 mm spindle to use a set of thick cups? Or, maybe thick cups are not useable with a 68 BB. Did Campy make a NR spindle that short? If there is a web site that has all this data I'd appreciate a link. Didn't find what I was looking for but my search criteria may have lad me astray. Thx.
1) Get a Sutherlands. Worth every single penny.
2) You can't really fart around with mismatched stuff like that, to be honest. You have to use compatible parts.
Nuovo Record cups were the first "thick" cups. That's what was 'Nuovo' about them (the rifling, which made them thicker, by design). The ATB cups with the rubber seals are also about the same thickness as Nuovo Record cups. Nuovo Record cups were only used on double-crank bottom brackets, not singles (didn't need the sealing improvements) or on triples (didn't want the additional flex caused by the narrower bearing spacing).
The difference between thick cups and thin cups is 2.5 mm per side (so 5 mm total) in bearing shoulder spacing on the spindle, as has been mentioned.