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| Aero Bottle |
Is an aero bottle any faster than a regular bottle?
Summary:
Data on this has been published by Mark Cote - Aerodynamic Engineer @ Specialized. He gave drag figures for their aero bottle and determined that an aero bottle is definitely better than a round bottle and even better than a bare frame at basically a head on wind. No data was available for other yaws.
Specifics:
The testing by Mark was done with the following protocol:
"Shiv bike alone, Roval Rapide wheels w tubular tires (spinning), head-on drag normalized to 30 mph, rho=1.20"
And this yielded results of:
No bottles: 537 gF
Round bottle on center of down tube: 556 gF
Aerobottle on down tube with 1 cm gap to seat tube: 534 gF
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| Standard Round Bottle |
Mark didn't have any other data available for yaws besides 0. He also indicated that with a rider on the bike, the aerobottle is still faster, but admits that it is tough to tease out the data with the rider variability.
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