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Old 03-25-2012, 12:35 AM   #41 (permalink)
womprat
Lead-footed Econewbie
 
Join Date: Apr 2009
Location: Wellington, New Zealand
Posts: 52

Ceffy - '97 Nissan Cefiro 25 excimo
90 day: 25.21 mpg (US)

Demio - '07 Mazda Demio Sport
90 day: 30.99 mpg (US)
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Quote:
Originally Posted by aerohead View Post
From looking at an older SAE paper on Indycar aero,if the car is Cd 0.24,then its drag would be about 79.5% lower than a typical racer.
At" 60% less," its Cd would have to be based on an Indycar without any wings or pods,just body and exposed wheels.
Interesting. Did the paper give a range for Cd? If so was the higher value and Indy car in it's maximum down force set up, since wings are adjustable?

When I saw .24 Cd I just assumed that was achieved by ground effect being much more efficient than wings.

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