Originally Posted by SSE14U24ME
that was interesting. What would the purpose of that be?
The silver "Z" in the picture measures the force that the car is pulling against it. the truck axle lets him floor his car and provide a load on it with the truck brakes. Then he can use the forward force he measured and his speed to calculate HP
1 HP = 33,000 ft-lbs per minute. the calculation is pretty easy from there, just convert miles per hower to feet per minute and you have it