Okay. An actual horse is 5 horsepower and has about five sticky outty bits (when you count the TAIL! Sheesh). Therefore a one horsepower thing is about a leg or flicking a tail energetically.
And if it’s a quarter horse, that’d be 1 hp= 1/5 x 1/4 = 1/20th of a horse. Somehow.
@Leucrotta So, would this mean that a My Little Pony would be roughly capable of one horsepower?