The coil is about 300-500 turns of 18 gauge magnet wire out of a car alternator. The power is supplied by a dewalt 18 volt drill battery at about 15-16 amps. The contactors are set up to supply power all of the time and the insulation starts to burn after about 10 seconds of running. (edit) - now with better contactors and timing, the amps are now between 30-50 amps.
Keywords: electric, motor, wire, homemade, dewalt, drill, battery, 18, gauge, power, spinning, fast, Mr, Pizzaman, 09
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