I’m trying to pick a group set to build up a road frame with a PF30 BB. Could be 105 5700, Ultegra 6700, Ultegra 6800, current Veloce or current Athena. As you can tell, it’s still early stages and I'm doing research / pricing up options.
Anyway, if I go with the cranks included in any of those groupsets, the PF30 BB seems to pose a minor problem. The following is my current understanding, and I’d really appreciate comments / corrections / pros and cons (specifically on the crank and BB issue). Are there options I’m missing? Thanks!
With the Campy Power Torque style cranks, I believe I would just need the crank and a set of these cups (described by Campy as “Pressfit BB30x46”): http://www.campagnolo.com/jsp/en/dow.../docid_336.jsp. The left-hand cup contains a bearing, the right-hand cup is really just an adapter, as the Power Torque cranks carry the right-hand bearing on the crank.
I have read some unflattering comments online about how this setup performs, specifically that the cups don't want to stay put. Although Campy has current documentation listing the item, one supplier (Tree Fort) lists the PF30 cups as “Discontinued” which is puzzling.
With Shimano cranks, I would need the crank, and either:
A regular PF30 BB, plus an adapter such as these from WheelsMfg: http://wheelsmfg.com/bb-pf30-univers...no-cranks.html
An integrated ‘Conversion BB’, such as this from Praxis: http://wheelsmfg.com/bb-pf30-univers...no-cranks.html (or, I think, this from Sugino: http://www.suginoltd.co.jp/japan/pro...RTER_japan.htm).
I know there are also PF30 cranksets, and PF30 to threaded / other adapters if I don’t want to go with a Campy or Shimano crank.