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 The planes and motors which we see today are the results of evolution. There was a preliminary design of the now famous Wright Whirlwind motor as early as 1917 and it, in turn, had grown from models of air-cooled radials begun by Mr. Lawrence in 1914.

The greatest pleasure I found in my experience with Kinner's motor was that of perhaps having a small part in its development. Its many little ailments had to be diagnosed and cured later. It smoked and spattered oil. Adjustment of a proper propeller was difficult. One of its eccentricities was an excessive vibration which tickled the soles of the feet when they rested on the rudder bar, putting a new meaning into joy ride. Such was the hilarious beginning of one of a group of motors which are being developed in the United States.

The idea of returning to the east, and doing it by air, had been simmering in my mind. Maps and data were all pretty well prepared. Then