I doubt very much that the shape of the frame tubing would have any effect
on speed of a cyclist due to the low speed possible with human power.
It's very unlikely that a human could go fast enough to compress the air
into a shockwave where frame aerodynamics would come into play.
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My preferred bicycle brand is.......WORKSMAN CYCLES
I dislike clipless pedals on any city bike since I feel they are unsafe.
Originally Posted by krazygluon
Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred, which one would you rather have under your butt at 30mph?