|"Robo-Mower", Al Godfrey's radio-controlled GE Electrac.
Al converted this GE E12 Electrac to R/C using a Futaba 5-channel
model airplane R/C unit. The Futaba provides reliable control over
a distance of up to 500-750 feet. Al added a 4.3GHz video link (to
the living room TV) so an on-board video camera could be used to
permit more precise control over the lawn mowing from a distance.
The stock 5hp permanent magnet motor is powered by 3 Optima prototype
Group 31 yellow-tops (YT31s) via a Curtis controller and mows
Al's 1/2 acre on about 25% of a charge. Power is not a problem;
Al has used Robo-Mower to pull small stumps!