The KeelyNet Blog

75MPG Hybrid Electric Car powered by 5HP Lawnmower Engine

Man, if this doesn’t inspire you, what will?
“Dave’s Opel CT is a hybrid electric vehicle. That is, the car is driven by an electric motor . . . but that powerplant’s “juice” is generated with the help of an ordinary, fuel-stingy lawn-mower engine! Now the fact that the system works isn’t really surprising. What’s amazing is that the crossbreed hookup performs so well! According to David, the Opel has not only a virtually unlimited range (when driven prudently), but also a top speed of 90 miles per hour . . . and emits a minimum of pollutants as it tools along the highway. Better yet, the car can-if need be-run on its batteries alone for short in-town hops . . . and will never be “stranded” as long as there’s fuel in the “on board” generator! Mr. Arthurs is the first to admit that there’s nothing “new” to the system he’s developed . . . in fact, all the technology incorporated into his design has been available for about 35 years, just waiting for someone to put two and two together and make the whole thing work. In essence, David has utilized a small gas lawn-mower engine to drive a generator, which-in turn-supplies the vehicle’s drive motor with electricity. To do so, he first removed the Opel’s original power-plant and installed a 400-amp DC motor/ generator (actually a jet engine’s starting motor) in its place. (Since there’s no need for a clutch in Dave’s setup, the stock unit was pulled out and the main shaft of the drive motor was fastened directly to the input shaft of the car’s transmission.) Then, to provide a consistent source of power for this motor (and to supply an energy storage bank), the engineer installed four 12-volt, heavy-duty automobile batteries-in series-which are “fed” by a 100-amp generator that’s run off a 5-horsepower lawn-mower engine. Plans for the Hybrid car, item number 1764 are available for $25 at or by calling 800-234-3368. / (Thanks to Glenn Watkins for this URL. – JWD)” – Source

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