When is flex in a bike frame a good thing?
It seems that all you ever hear about is how dadgummed stiff a bike frame is as if that is all that is important. I don't pretend to know it all but I would imagine that in certain situations, flex would be a good thing. It seems to me that if a bike flexes, that there would be some kind of rebound energy passed on to its rider. Perhaps this would be beneficial in a crit turning corners at high speed. Anybody know more about flex?