G-TECH/Pro Aero Drag HP Loss Calculator

This form will calculate the HP that is lost due to aerodynamic drag at a given speed.

• In order to use this form, you need to know your vehicle's drag coefficient (Cd) and frontal area.
• You can find estimated drag coefficient and frontal area values for many vehicles here.
• We cannot reply to requests for values for your specific vehicle, please search the Internet or email your manufacturer. 

	Cd * A * V3
HP loss due to Aerodynamic Drag is approximately equal to:	------------------------------------
	150,000

where:

Cd = drag Coefficient
A = frontal area in sq. ft.
V = Velocity (speed) in MPH

Item	Value	Units
Drag Coefficient (Cd)		N/A
Frontal Area		Ft.2 m2
Speed		MPH km/h

This calculator illustrates how the horsepower lost to aerodynamic drag goes up by 8 times for each time the speed doubles!

For example, input a speed of 20 MPH and look at the calculated HP loss, then change the speed to 40 MPH and re-calculate the HP loss -- it doesn't double, it goes up by a factor of 8!