lol it's right on my laminated engineering reference card that gets me discounts at geek conventions...HP = torque x RPM/5252
But what horsepower actually is is actually quite difficult to envision in your head. While torque measures how much power the downward piston stroke generates on the crank, horsepower is a rather odd function that compares it to how quickly it uses that torque. I dunno, I find it pretty fascinating
