Do you actually feel the improvement of BB30 (or PF30) over traditional BSA bottom brackets in pedaling efficiency during hard efforts? or is there proven data that supports the improved stiffness of the shorter, beefier bottom brackets or crank axles?
I know in terms of serviceability, longevity and noise, BSA BB takes it, contrary to what was advertised about the larger BB30, with the fancy bearings, and what not. I'm wondering if the newer bottom brackets have any edge whatsoever over the traditional system, or whether it's just a marketing tool to lower frame manufacturing cost.
smells like bull**** to me