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Old 12-16-2008, 03:56 PM   #3 (permalink)
cfg83
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Location: Southern California
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1999 Saturn SW2 - '99 Saturn SW2 Wagon
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aerohead -

Quote:
Originally Posted by aerohead View Post
The coefficient of aerodynamic drag for your car is fixed,and remains constant,once up to about 20-mph ( 33 km/h ),and the experts now say that aero drag is significant by 35-mph ( 56 km/h ).
Since I think most cars spend the majority of their time above 30 MPH, would it be safe to say that aero-mods "always help", but that the return, the "bang for the buck", is better above 35 MPH? I keep thinking there's an "economy curve" that would slope up and apex around 55 MPH, and then start to slope down with diminishing returns. Orrrrrrrrr, would the apex of the curve change as a function of the Cd (aka basjoos)? Kind of a BSFC for each Cd.

CarloSW2
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