OwnerTim Gulden
LocationWinona, Minnesota United States map
Email email image
Vehicle1973 General Electric Elec-Trak E20
MotorGeneral Electric Compound Wound DC
Equivalent to a 20 hp gasoline engine
DrivetrainInfinitely variable electronic & 4 speed manual transaxle
ControllerQ4D Pro-120-36
120 Amp with reverse and regen
Batteries6, 6.00 Volt, Lead-Acid, Flooded
$47 specials 220 Ah
System Voltage36 Volts
ChargerTripp-Lite APS 3636
3 stage, 36 Volt 30 Amp
HeaterSunshine on the black seat.
DC/DC Converter
3600 watt continuous DC to 120 VAC inverter
InstrumentationPower gauge and fuel gauge
Top Speed10 MPH (16 KPH)
RangeMow 2 acres or 3,600 Watts for 2 hours.
Watt Hours/MileOur lawn takes a little less than one hour to mow and the total cost to charge the batteries, using a "Watts-Up?" power meter, is $0.25 per mowing @ $0.10/Kwhr.
Seating Capacity1 adult, very comfortably.
Curb Weight940 Pounds (427 Kilograms)
TiresRear 23 x 10.50 Front 16 x 6.50
Conversion Time15 weeks part time
Conversion Costapprox. $3,900
This tractor was sitting in a field for 2 years and was in very poor shape. I purchased it, mice and all, and decided to rebuild it better than the original. I completely gutted out and redesigned the original wiring to take advantage of modern electronic technology. This tractor will maintain the same mowing speed going up hills as well as down. It can be parked on a side hill and remain there (or creep ever so slowly) without brakes using it's dynamic braking. There are also acceleration and deceleration ramps to eliminate the starting and stopping jerks and reverse is as easy as flipping a switch. The on-board inverter will provide 120 VAC at 30 Amps for 2 hours, which is more than enough for power tools and appliances as well as powering most of my house in the event of a power outage. This Tractor was completed in August of 2003 and to date is running great!

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