Originally Posted by
Inertianinja
lemme articulate my concern about the BB better:
my understanding is that it's a 70mm italian-threaded BB.
this would be my first Campy build, and i want to use a modern external-bearing BB.
I understand that because the Campy BB The BB width must be 67.2-68.8mm - because the cranks need to connect at a joint in the middle of the BB.
if the Ciocc's BB is 70mm, wouldn't that make the campy BB unusable?
i'm picturing this joint pulled 2mm apart:
That spec has to be for English (standard) threaded BBs like you've built up before. An Italian threaded one has got to be 70+/-. I'm going to go to the Campy site now.
Edit: spec for Italian thread: 69.2-70.8mm.
My guess is that the English cups are 1mm wider a side than the Italian cups.
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Last edited by Ex Pres; 12-20-10 at 01:56 PM.