> b) make a very rough guess as to the power of the motor based on size & by
> comparing it with other (similar if possible)  motors of known power.

They better be very similar motors with if you try that. Size doesnt
mean that much at all.  The best example of this I would think would
have to be 3 of the motors they gave us this year for use in the FIRST
robotics competition. The CIM, the FisherPrice motor, and the mabuchi
motor. The CIM is a hefty motor, about the size of a 6v lantern
battery (except round :p) Peak output power on that was 380 watts or
so. But the FisherPrice motor (actually a motor and tranny from a
power wheels) the motor its self was only a about 3/4 the diameter of
the CIM, and probably 1/2 the length. But its peak power output was
over 400w. Now for the little mabuchi motor they gave us. It was a tad
larger than the FP motor, and its peak output was less than 10 watts.

All of the other suggestions sound like good ones though.
-- 
Jonathan Hallameyer

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