Torque Calculations

[ZZII 527]

Originally Posted by AndyB

Thanks for the help guys. My other question is, if I am given a free speed, how do I much is the actual speed affected? How do I calculate it with different amounts of force?

An easy way to do this is to draw out a linear torque-speed curve:

Plot free speed as a point on the speed axis. Plot stall torque as a point on the torque axis. Connect these two points with a straight line. This line defines the torque at a given speed, or the speed at a given torque. (Two ways of saying the same thing, although the dynamic relationship between the two is somewhat more subtle.)

The equation for that line can give you the speed at any torque:

(SPEED) = (FREE SPEED)*[1 - (TORQUE)/(STALL TORQUE)]