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Old 08-01-2008, 04:01 PM   #21 (permalink)
aerohead
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the speed

Quote:
Originally Posted by MazdaMatt View Post
For some particular car, can anybody give an example of the speed at which rolling resistance is equal to aero drag? I know that it takes a LOT longer for my car to go from 10 to 0 than it does to go from 50 to 40.
CAR and DRIVER used to publish road horsepower,broken into aero and friction and tire losses,at 30-50,and 70-mph,for their in-depth road tests.I believe there is a descrepancy do to the optical speed sensor slung off the side of the car.I'm awaiting a return communication from C&D to see if Daytron Messteknik,makers of the speed sensor offered a correction factor.---------------------- The old rule of thumb,was that at about 50-mph,aero and RR were about the same.If I hear back from them,I'll let everyone know.

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