 Googled mathamatical racing calculations and, found this. PHYSICS OF RACING SERIES |
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| Dr. Roger |
 Oct 21 2005, 06:04 PM
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A bat out of hell.  Group: Members Posts: 3,944 Joined: 31-January 05 From: Hercules, California Member No.: 3,533 Region Association: Northern California  |
Takes an hour or so to get through but I throughly enjoyed it.
Does anyone else have good race technique / technology resources online? http://autopedia.com/stuttgart-west/StuttPhysics.html Same site. Different link HERE. I learned that a Vette at 55MPH takes a mathematical 7 HP to stay at 55MPH. but takes 15 HP to stay at 65MPH. Very interesting. (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) Roger |
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| lapuwali |
Oct 21 2005, 06:25 PM
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
Old site, but a good site.
Aero drag goes up as the square of the speed, so yes, going faster gets progressively harder. Note that a Vette ONLY takes 15hp to go 65mph. The "typical" car takes about 9hp to maintain 60mph (based on drag). So a very tiny engine is required to maintain freeway speeds. A 250cc engine can make 10hp pretty easily, and will get excellent mileage doing so. However, acceleration will be terrible. Give it 100hp for 30 seconds or so via electric motors, and you can have adequate acceleration, and a tiny engine can maintain cruise and recharge the batteries for the next bit of acceleration. This is how (eventually) a 100mpg hybrid will be made, once the automakers stop being so conservative. |
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| TimT |
Oct 21 2005, 06:43 PM
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
Yes, Ive had that bookmarked for years
some sort of Star Trek quote comes to mind " Captain, you cannot change the laws of physics" or something along those lines |
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| MattR |
Oct 22 2005, 11:11 PM
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Advanced Member Group: Members Posts: 3,279 Joined: 23-January 04 From: SF Bay Area Member No.: 1,589 Region Association: Northern California |
If you really want to blow your mind, pick up Race Car Vehicle Dynamics by Milliken/Milliken. Its published by SAE (Society of Automotive Engineers) and is available at amazon. Its a really great book if you REALLY want to learn what a car is doing in a turn... and a bunch of other stuff. It has some high level math, but if you arent looking to make a profession out of it, its really informative.
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