[aerohead]

Originally Posted by CarterX27

Hi,

I understand how the forces are calculated as explained in footnote 7, but I'm not understanding how to calculate power.

I think total power = power drag + power rolling resistance + parasitic loads.

I've used the equations from Pamvec chapter 3 of P = 0.5*rho*Cd*A*v^3 + (Crr * Mtotal * g * v) but it gave me some ridiculously large numbers

What is the formula used in the online tool to calculate power?

Thanks.
Carter

If you have your drag force in pounds,at a given velocity,multiply that by your velocity (MPH) divided by 375 to get your horsepower.