Alexander Eaglerock A-12 Aircraft with 7-RA Comet Engine

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Right side profile view of an Alexander Eaglerock A-12 aircraft fitted with a Comet 7-RA air-cooled radial piston engine. A model of the Comet Engine Corporation, the engine was manufactured on a Gisholt turret lathe in Madison, Wisconsin. The plane was designed in 1929 by Alexander Aircraft Company of Engelwood, Colorado, a company originally formed in the 1925 by J. Don Alexander. Between 1928 and 1929, Alexander Aircraft company was the world's largest aircraft manufacturer. The A-12 was a two-seat bi-plane airplane that measured 25 ft 11 in length with a 36 ft 8 in wingspan and was powered by a 7-cylinder Comet engine running at 130 hp. The Alexander Aircraft Company later refitted a few A-12 models with the 7-E Comet engine, running at a faster speed of 165 hp. Gisholt Machine Company purchased the Comet Engine Corporation in 1929, and moved the Comet factory from Oakland, California to Madison, Wisconsin. The plane is parked on an airstrip presumably at a hanger in Madison and was used for corporate advertising. Its registration number is X733H and decal text on the tail reads: "Alexander Eaglerock" and "Alexander Aircraft Co." The plane body by the cockpit reads: "Tie your ship to a Comet."