You aren't going to know which is better aerodynamically without that test or some other test that holds all conditions constant, except for the bike frame. It doesn't really matter much anyway. Those frames are road frames, not full-on TT frames, so your body position--which will change over the course of the ride will have a much bigger impact than the frame aerodynamics. The aero qualities are also dependent on components: some frames are faster with Brand X wheels, while others might be faster with Brand Y. As oldbobcat alluded, the difference between the three will likely be pretty damned small. Instead of focusing on aerodynamics, I 'd suggest focusing on which frame fits better, rides better, best tickles your aesthetic sensibilities, and best fits your budget.BAZINGA213 said:
In the strictest sense, you don't know. You have to rely on studies done by either third parties (preferable) or the manufacturers, and relying on the manufacturers' data can be dodgy. They're unlikely to lie about data, but they can set up test parameters to provide optimal conditions for their frames (wheels.....helmets......etc......). Unless magazines take frames to the wind tunnel, their view of what is most aero isn't worth anything, not even the cost of the photons exiting your screen and incident on your retina.dfgjedgrd said:
