It doesn't, but higher speeds inflate the wattage differences in the charts. Just like you could hear from some (ordinary, not TT) helmet manufacturers that you save seconds versus other helmets at even more ridiculous speeds: 50kmh, and above. Whenever I see a manufacturer putting the test speeds up, I have to question why... with the most probable answer being - yes, the differences are there, but actually too small to make our product stand out from the others. And again, what's that secret sauce for QR for the bike to remain like constant drag almost through all yaw angles tested? I cannot recall any other wind tunnel tests where a frame would have behaved that way. One of the reasons (just my guess) would be that they tested bike-only whereas most of the other tests we've seen are done with a mannequin or at least "rider legs".Lina wrote: ↑Mon Mar 01, 2021 12:10 pm1) The speed doesn't matter as long as it's something that can be achieved with a bike unless you're trying to do something like optimizing gear for a record attempts. The aerodynamics don't dramatically change between 30 and 50 km/h. Obviously the differences are smaller in lower speeds but does that really matter, the order of the bikes won't change.
As for yaw angles, only 5% you go outside of 10deg, and ~75% is spent within 5deg interval (unless you ride Kona), and that's with lower speeds than those 45+ kph (higher speed decreases the effective yaw angle) https://www.slowtwitch.com/Tech/Real_Wo ... _5844.html
Anyway, kudos to QR bringing out a nicely performing aero disc bike for the price which severely undercuts all of the competition.