Estimate Your Horsepower!
(THIS IS JUST AN ESTIMATE BASED ON SIMPLE CALCULATIONS!)
calculation to work.
weight in pounds (including driver)
You are making : HP at the rear
wheels and HP at the flywheel*.
*Note: Assuming a 20% drive
*Note: Assuming a 20% drive train loss.
Tire diameter in inches
Enter the tire diameter in inches, rpm's of the motor at a certain speed as
indicated by your speedometer in mph. This calculation assumes the car's transmission is
in drive or 1:1 ratio, no overdrive.
Rear End Gear Ratio