Quote:
Originally Posted by John G
Where did the 4/9 come from. I must have missed something in my math.
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Mechanical power is torque x speed.
Stepping down from 18 to 12V is a 2/3 change.
Power = 2/3Torque x 2/3 speed. Works out to the power at 12V being 4/9 that of 18V.