Quote:
Originally Posted by JamesCH95
Can't find the internal resistance spec for a 775 off-hand...
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The FRC 2014 motor spec says:
RS-775-18 stall current = 87 amps -> R = 12/87 = 0.138 ohms
RS-775-12 stall current = 30 amps -> R = 12/30 = 0.400 ohms.
So, for 10 watts input power, the RMS voltage at stall would be given by:
V = sqrt(P*R) = sqrt(10*0.138) = 1.17 volts for the 775-18 for 10 watts
V = sqrt(P*R) = sqrt(10*0.400) = 2.0 volts for the 775-12 for 10 watts.