Join Date: Feb 2007
Location: San Francisco
Bikes: Univega Gran Premio, Custom MTB/SS/Commuter, Vintage Miele Fixie under construction
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
italian BB is the size of the shell, not the taper of the spindle. The BB shell is a little bigger, like 2mm bigger than most other BB shells. I have an italian sized BB (sealed Shimano) on one of my bikes with some old Sugino Super Mighty road cranks, and they work fine. The shimano BB has the same taper as the cranks.
If you are going to get some Sugino 75s, get the right sized BB for whatever bike your using it on. If your going to use those on a track frame, get the Sugino 68 or 75 BB, that will give you the correct chainline.
If your going to use them on a road conversion, you can use a campy BB with the correct spindle length for your application. the tapers are both iso