1. The problem statement, all variables and given/known data Need to find input torque, output torque and input torque (omega) all NM Data i have is Input RPM = 9700 Output RPM = 1950 GEAR 1 = 12, 2 = 40, 3=30, 4=20 (Radius) with module 2 (x 2 for diameter) Power = 2.3Kw 2. Relevant equations Turn power to H.P giving 3.083 H.P Use (63025 * H.P) / R.P.M = T T = 20.1Nm Ang Velocity V(omega)input = R.P.M in * 2pi/60 = rad/s V(omega)output = R.P.M out * 2pi/60 = rad/s Input Rad Torque T(omega) in = V(omega)in * Torque 3. The attempt at a solution I would say the torque is 20.1Nm I am getting confused with these torques, Situation is a 2 stage gearbox, and torques need to be found, including angular torque, but cant seem to find the formulas i really need. Pretty simple i am sure, but its not clicking for me right now.