The
insides: drivetrain from an old R/C kit car, batteries from 14.4V
power drills, car-style steering up front, all riveted to a stiff
steel plate
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Original
version had an old mechanical speed control and drive motor was
powered by small 7.2V battery pack
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Closeup
of motor, gearbox, axles, and mounting system (sheet aluminum
and rivets)
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14.4V
p ower drill motor with custom circular saw attachment
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