Email Print Rotating Horsepower Written by Jerry Ratzlaff on 20 January 2021. Posted in Fluid Dynamics Rotating Horsepower formula \(\large{ RHP = \frac{ \tau \; s }{ 5252 } }\) Where: \(\large{ RHP }\) = rotating horsepower \(\large{s}\) = speed \(\large{ \tau }\) (Greek symbol tau) = torque Tags: Equations for Torque Equations for Horsepower