btw everyone should look at this article. if you disregard the cervelop4 great numbers at 0-5 yaw(they using uci-illegal ventus bar) all the super tt bike are very close. notice the difference a round water bottle makes to the drag numbers.
when will velonews do a aero test on tt frames ?http://www.slowtwitch.com/Tech/P4_in_th ... _1929.html
Well for what it's worth, the Trek's bars are also UCI illegal (though not 22:1 aspect ratio illegal). And the Giant and Specialized both have their UCI illegal nosecones attached. Of course the test was for triathletes who buy 95% of those bikes, and don't care about UCI legality.
If a company is going to make an integrated front end with their own proprietary bars like Trek, Giant, and Specialized, or semi-integrated with it's own proprietary stem that accepts bars without an integrated stem like the Scott (note: they even used the USE Tula for the Scott, which is supposed to be an incredibly fast bar as well) then I think it's a fair test. The moduability of the P4 is one thing it has going for it, you can
use all of the most aero equipment without resorting to jury rigged setups, and questionable integration issues.
They're all very close, and once you get the rider on there, the differences are so minute.