[Diy_efi] Wind resistance calculator

[Derek]

Does anyone know of an equation, or maybe a online calculator, that can tell me
how much HP is required to maintain a given speed, given the drag coefficient of
the vehicle?

I can calculate the g forces at any speed based upon my RPM rate of change, and
therefore, acceleration (assuming no tire spin), which I have in 30 samples/sec
in my log files.

I can calculate horsepower from g-force and road speed (also constantly logged).
I just need to add the horsepower lost through wind resistance. I want to keep
drivetrain losses, I want a RWHP figure, not FWHP.


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