NCAA - DUAL CHAMPIONS!
Join Date: Mar 2000
Location: From Sarasota, FL sitting in front of a computer spewing random thoughts!
Bikes: Intense Uzzi SL, Masi Speciale, Trek 3700 Nashbar Single Speed, Old Cilo Road frame
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Stiffness and maintenance. One Piece cranks regardless of what material they're made of will flex. Why? I dunno. Probably because they are bent or cast or both. Also, taking one apart is a pain in the arse. Changing your gearing means taking apart, although spiders are available. Another reason would probably be weight! Those one-piecers can be used for small boat anchors. My best guess (and logic) would lean me toward the weight issue.
I really don't know for sure, but I imagine the "coolness factor" has a little to do with it as well!
Nah, I imagine it has to do with the aluminum being light where it can be and the seperate bb is strong torsionally. Combine the two and whala! 3 piece cranks!
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger