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Old 07-29-2012, 01:31 PM   #15 (permalink)
cfg83
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ERTW -

Quote:
Originally Posted by ERTW View Post
Cx' is the sum of all coefficients of drag. I wouldn't care if I didn't know my exact Cd, as long as I could see an improvement in overall drag. And as I said, it IS possible to extrapolate Cr from a stock car, using published Cd, with a high degree of accuracy.

do you think I should make a new thread?
Yes, then we can ask questions about how to mitigate the flaws. I still think the best test is a road on a hill in the middle of NOWHERE followed by a long flat interval. That way you can coast to the bottom gaining speed and then coast to a stop. Multiple runs in mode X will yield an error factor that you can take into account on subsequent runs in mode Y.

CarloSW2
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