Originally Posted by
Road Fan
I agree with Jim, the LBS answer seems calculated to make you just buy something. Thing is, are they skilled in vintage components like cup/ball BBs specifically for Campagnolo? What kind of Record is it? C-Record has some unique features making it different from Nuovo and Super Record.
Yes, "different" is the word. They are not even close; you can tell them apart from 100 ft. away.
Super Record of course has some differences from Record as well. The crankarms themselves are the same. Not just similar, but same part number. The only difference is the chainrings.
A
true Super Record BB, on the other hand, will have a titanium spindle. Record, Nuovo Record, and C-Record have steel spindles, but all different from each other, and not compatible with each others' cups. The only cups that will interchange are the SR and CR.
Originally Posted by
Road Fan
And while 115.5 may be a decent approximaiton of the necessary spindle length, it is not a symmetrical BB, and it's usually for triples.
With all due respect, it's not a "decent approximation." It's a factory specification.
The original spindle length for Record, Nuovo Record, and Super Record was 113mm, and yes, not symmetrical. Depending on the spindle, it was originally 1-2mm longer DS than NDS. Their Record triple spindle was 118mm, 5mm wider, and all on the drive side.
In 1978, Campagnolo widened all their spindles by 2.5mm to accommodate the changes in the FD and cranks mandated by the CPSC. They added 1mm to the left and 1.5mm to the right of all the previous spindle specs. That spec was stamped onto the spindles for the first year or so, then they changed the stampings permanently. That's how you end up at 115.5mm.
Originally Posted by
Road Fan
From my refurbishment of my 1980 Masi with Nuovo Record, I know that when it's assembled correctly, everything fits the frame and the BB like a glove with the correct spindle, cups, BB shell, and crankset, and the drive and non-drive side location of the crank arms are symmetrical with respect to the chain stays. I would want to spend a lot of time in trial assembly to verify whether the Veloce has the same dimensions as the appropriate cup/spindle combination.
Or you could just get the right Record/Super/Nuovo Record BB and not have to spend any time in trial assembly. The titanium are like unicorn horns, and about as expensive. But the steel ones aren't that rare.
Originally Posted by
Road Fan
If the spindle is really ok with the Campagnolo crank you are just lucky IMHO, but it might be ok.
A little lucky, maybe. As I previously noted, the original spindle length for Record/Super Record (Italian thread) was 113mm. Which is, as we now know, exactly what he has. Lucky? Perhaps the person who put it in there knew what they were doing. Which is very likely, because this compatibility issue was rather better known back then than it appears to be now.