I think Tour magazine tested a lot of wheels last year and the Mark 1's didn't do too well (I'm not sure but didn't the drag increase with an increase in yaw). I think I have the issue at home so I could look if you like..


It will be interesting to see how the Mark 1 TT wheels test.

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Searching for the bliss of ultimate exertion.

http://www.zipp.com/...owheelcomparison.pdf

Translation of the Tour article.

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Searching for the bliss of ultimate exertion.

Thus far anedotally I'm hearing the TT versions do badly with a constant yaw in a wind tunnel but in the real world are very light and very very fast. I may see if i can borrow some to test.