Speed = Distance / Time
Rotational Speed = Rotational Cycles / Time
Rotational Speed = Degrees / Time
Torque = Force x Distance
Force = Torque / Distance
Where the Distance is the distance from the axis of rotation
Power = Force x Velocity
Motor Key Specs:
- Stall Torque
- Free Speed
- Stall Current
- Free Current
For determining motor characteristics as voltage varies:
New Value = Spec Value x (New Voltage / Spec Voltage)
For determining Motor Current Draw at a given Torque Load:
Current Draw = ((Stall Current – Free Current) / Stall Torque) x Given Torque Load + Free Current
For determining the Torque Load at a given Motor Current Draw:
Torque Load = (Given Motor Current – Free Current) x Stall Torque / (Stall Current – Free Current)
For determining Motor Rotational Speed at a given Torque Load:
Rotational Speed = -(Free Speed / Stall Torque) x Given Torque Load + Free Speed
For determining “Super” Motor Specs from Multiple Motors combined as one, geared to the same Speed:
Free Speed = SAME
Stall Torque = Sum of all Motor Stall Torques
Stall Current = Sum of all Motor Stall Currents
Free Current = Sum of all Motor Free Currents