I'm attempting to ride every variation of tubing diameter, thickness, buttness, brazing material, lug type, and color (I've heard orange is the fastest, but that's just talk talk talk.. with no documented conclusive data to back it up). I feel confident, after exhausting all variables in the equation, tabulating it, and crunching the data... I will still not have the answer. If you have doubled butts... that's the best, and tripling your butts, even better. I think mostly though, C&V is about riding, learning, drinking, and lying; and the greatest of these is lying (trust me).