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Leroy Milburn Cox (April 27, 1906 – September 22, 1981) was an American entrepreneur, world famous for his Cox model engines and gas powered toys including model cars, airplanes and boats. [ 1 ] Personal life
Four-stroke model engines have been made in sizes as small as 0.20 in3 (3.3 cc) for the smallest single-cylinder models, all the way up to 3.05 in3 (50 cc) for the largest size for single-cylinder units, with twin- and multi-cylinder engines on the market being as small as 10 cc for opposed-cylinder twins, while going somewhat larger in size ...
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The Camair Twin Navion was a civil utility aircraft produced in the United States in the 1950s by converting single-engine Ryan Navions to twin-engine power. It had been one of two programs to improve the performance of the otherwise-pleasing Navion that was generally considered to be underpowered.
The Ford Model A and B engines dominated American auto racing until World War II [41] [43] [44] [13] Some racing is still done with Ford Model A engines, [43] [45] [46] [47] and high-performance aftermarket modifications are available to increase performance, with some achieving 110 horsepower, at compression ratios of up to 6.5-to-1. [13] [39 ...
There also exist model diesels with fixed compression heads. A few examples are the British 5 cc OWAT or the American DRONE. These engines have a fixed compression ratio, but the compression can be altered slightly with the use of more or less lubrication oil in the fuel. Also the engine's load affects the compression and ignition timing.
The first American model was a version of the Mark XX, designated the V-1650-1 by the American military and the Packard Merlin 28 by the British. This engine used a single-stage, two-speed supercharger, the gear changing mechanism of which originally came from a French Farman patent license. The Merlin 28 was used for the Avro Lancaster bomber.
In London, pilot Beatty demonstrated a Wright aircraft retrofitted with a 50-hp Gyro engine. [8] The Gyro progressed to 80-hp in the seven-cylinder model by 1913, and up to 110 hp in the Model L nine cylinder "Duplex" with a unique cam-driven exhaust valve. The French Gnome Omega and future variants proved to be more popular in sales.