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away the following morning and flew to Lake Harbor near Muskegon, Michigan, that day. Storms held them there until the 14th when they flew on to Pentwater, Michigan. There they were held up again by bad weather and decided to quit the race because they were so far behind the leader. As a result they returned to Chicago on July 22nd and remained there into August, carrying passengers and demonstrating the "Aeroyacht."

Back in California, Day evidently remained with Martin through 1913. That winter, he left again to design and build a special exhibition tractor biplane using a 50 h.p. Gnome engine for DeLloyd Thompson. This plane was flying at Los Angeles in March, 1914, and Thompson began looping it. In May, Day and Thompson returned to Chicago with this machine, where apparently Day was mechanic and assistant to Thompson in exhibition flying. By July they had installed an 80 h.p. gyro engine in the plane and were at Overland Park, Kansas City, Missouri, on an extended exhibition engagement. Well known Chicago aviation mechanic Al Hofer was also with them and preparations were under way for an attempt at an altitude record flight. On August 6th Thompson did set a new United States altitude record of 15,580 feet with this plane. While on this assignment Thompson reportedly game Day more instruction and he became a very competent pilot.

In September Day became Chief Engineer of the Aircraft Company, Inc., of New York, a new firm which had just been formed due to reorganization of the Sloane Aeroplane Company. The new firm had shop facilities in Long Island City, New York, and Boundbrook, New Jersey. On May 5, 1915, Day became a member of the Aero Club of America. In this new capacity, during the remainder of 1915 Day engineered a new Sloane-Day training type, tandem tractor biplane with a 90 h.p. Kirkham engine. He made special exhibition machines for DeLloyed Thompson and Overton Bounds, and a new Model H, 40-foot-span military tractor biplane with a 6-cylinder, 125 h.p. Hall-Scott engine. As the year ended, Day was in Great Britain with the new Model H machine and came home with an order.

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