I have bad news for you, Horse power actually doesn't equal one horse. I learned about it in physics, it is something like 1 horsepower actually is something like 1/8 or a horse.
It is just a relative number, calculated by how much a horse could pull for 8 hours at a certain speed.

Once you go cat you never go back! Nacra 5.2 (Elsies)#1499, running an inter17 spin!