Time Trial / Time Trialling / TT

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gbj_tester in reply to @skinny

Assuming Area of 2.8 to get reasonable velocities, reducing cda by 0.02

ftfy, and I think you have your C_d about 3 times too low and your A about 3 times too high, not that it matters for these purposes but C_d of ~0.3 is modern car territory, not safety bicycle.

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skinny in reply to @gbj_tester
Yes I see, wasn't thinking. Due to missing some drag factors, the cdA is higher than would be, change still representative.

I checked some numbers off cyclingpowerlab. So these cda are high, but give a good speed (which is what matters).

The possible saving does seem to be in the region of 2-4 hours. So that is substantial. But as a % of overall time (220 hours) small. Plus is a carbon 24h rim more likely to break, hippy can answer that!

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hippy in reply to @skinny

32h, but yeah, I won't be using deep rims on ultras again nor will I be using cheap Chinese carbon rims again. Works well as tubeless... pity I have no bike to use it on though.

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