Good afternoon, guys.
Some interwar touring and sporting aircraft, built with 5-cylinder radial engines, Kinner and Wright Whirwind.
Travel Air 4000 was the most built aircraft of the era (the series 2000/ 3000/ 4000), a biplane of conventional steel tube, wood, metal sheets and canvas, with between 1200 and 2000 (the quantity is uncertain because several rebuilts were counted as newly ones). Powered by several engines, both radial or in-line rated between 75 and 120 hp, the model E 4000 had the Wright R-540, being the most powerful of the series with 165 hp.
Parks P-2 was the personal mount of author Richard Bach and was inmortalized in the novel "Biplane", despite being built in rather small quantities.
Spartan C-3 was a biplane made in the interwar years, of conventional construction and equiped with several engines, the most powerful had a 225 7-cylinder Wrigth Whirwind radial.
Davies D-1 was one of the smallest touring airplanes built before the Wall Street Crack. A parasol wing aircraft of conventional construction and powered by the small but reliable Kinner 5-cylinder radial, was built in small numbers.
Kinner Airster was a biplane built with 2 radial engines, one, the early model was a 3-cylinder one of conventional construction, and a later model, with playwood planks instead canvas, a patognomonic slab sided view and a 5-cylinder Kinner engine. The one depicted here was the later model.
Finally, a racing airplane built by Travel Air Manfacturing Co (created by Clyde Cessna, Walter Beech, and Lloyd Stearman), the Model R Mystery Ship, a low wing monoplane braced with steel strings. Powered by several aeroengines of increasing power output, only five Mystery Ships were built and were flown by some of the most notable flyers of the day, including Jimmy Doolittle not only in races but also at air shows across the United States and Europe.
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Cheers!