Originally Posted by Steve B.

Thats interesting. I had always read that being aero, which for many doing triathlons, was riding on the aero bars and being as aerodynamic as possible, didn’t matter unless you were up over 17-18 mph or so. I always had read and assumed that energy to gain speed is mostly an effort against the wind, thus it would make sense (to me) that aero tubing and wheels will have less effect at slower speeds and it’s only when you hit certain speeds do the frame and wheel design start to be beneficial. I’ve been know to be wrong though.