Originally Posted by
Jughed
So, Cannondale claims their aero bike with deep section aero wheels *can be* 3 min faster in a 40k TT over its regular race frame with normal wheels. 2 min faster with equal wheels.
I've only seen a couple real world 40km tests with ~25-40s time savings for aero vs non aero frames and cockpits (identical tire, tube/tubeless, rim profile, etc, wheelset combos). Manuf marketing depts, otoh, triple or quadruple frame timing cda figures in their own tunnels. Unlikely gap but not a surprise. Even TourMag in Germany, who publishes some of the more substantial aero bike reviews, lacks the resources to report frame cda values with standardized equipment. Good stuff either way though:
https://www.tour-magazin.de/rennraeder/aero/
If you can't read German, there's Google Translate for websites... that c68 at 4800 euro is a comparative bargain.