| Owner | Mr. Sharkey |
|---|---|
| Owner's Other EVs | 1981 Volkswagen Rabbit L Pusher Trailer |
| Location | Minerva, Oregon United States map |
| Web/Email | WebPage |
| Vehicle | 1971 General Electric Elec-Trak 26AE20BA |
| Motor | General Electric Compound Wound DC 20 HP |
| Drivetrain | 4 speed Peerless differential |
| Controller | General Electric 3 stages resistive armature, full armature, 4 stages field weakening - relay operated |
| Batteries | 10 Nissan Leaf G2 modules, 7.20 Volt, Lithium-Ion Leaf modules are connected 2 in parallel each, with 5 parallel pairs in series. Nominal voltage is 36 volts Rear battery compartment still holds four Trojan T-105 lead acid cells to run the cable winch and to provide weight over the drive wheels for better traction |
| System Voltage | 36 Volts |
| Charger | Onboard: Todd Power Source PS45. The three 12 volt modules in the charger were wired in series to provide 36 volt, 15 amp charge current. Offboard: An ancient Cushman 36V, 25A transformer-based boat anchor manufactured by Lester. Modified to allow variable charge rates which are selected by a rotary switch connected to mulitple taps on the transformer primary. |
| Heater | Solar exposure, adjustable via vestments |
| DC/DC Converter | Two 36v-to-12v DC/DC converters supply power to instrumentation and LED headlights. |
| Instrumentation | Clean Power Auto EV Display digital meter and automotive fuel gauge to display SOC |
| Top Speed | 9 MPH (14 KPH) too fast! |
| Range | Mowing: 5 acres, tilling: one-half acre |
| Seating Capacity | 1 adult or 5 plus kids |
| Curb Weight | 900 Pounds (409 Kilograms) approximately, depending on accessories |
| Tires | ElecTrak Turf-King, front: 16 x 6.50 - 8, rear, 23 x 9.50 - 12 Custom-fitted tire chains with steel cable tensioners |
| Conversion Cost | Anyone who keeps tack of what they spend isn't a hobbyist |
| Additional Features | 3 blade, 3 motor, front-mounted mower deck 4 tine tiller with separate 14 HP 36 Volt motor 60" dozer blade Rear mounted electric cable winch Regenerative Braking Epoxy enamel coated battery compartments 20 and 50 Amp, 36 Volt accessory receptacles Accessories can be run from a 1kW 36vdc-to-120vac rotary inverter Flame-thrower LED headlights |
| Conversion from lead acid to Lithium has brought new life to this 50-year-old tractor. An ongoing project, it still needs a BMS installed on the Leaf modules before it can be considered "safe" to charge without constant supervision. | |
GE ElecTrak E-20
Last Updated 07-23-2020
Copyright © 1997-2025 by Mike Chancey