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14-12.-2007, 02:18 PM
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Re: negative drag
Peter Rathman wrote:
> ... > My car has a coefficient of drag of 0.35, and it has a much more > streamlined shape than a regular upright cyclist. Where did your > factor of 10 (implying a Cd of 0.1) come from? Figures I've seen for > normal cyclists have been more around 0.6 or 0.7.... Here is what a bicycle with a coefficient of drag of slightly less than 0.1 looks like: <http://www.ent.ohiou.edu/~et181/hpv/Andrea_64.7mph.jpg>. (Yes, she is pedaling the bicycle in excess of 64 mph without wind or gravitational assistance.) -- Tom Sherman - Holstein-Friesland Bovinia "Localized intense suction such as tornadoes is created when temperature differences are high enough between meeting air masses, and can impart excessive energy onto a cyclist." - Randy Schlitter |
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