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[[strikethrough]] on occasion. In view of these changes[[/strikethrough]] Benoist gave up personally piloted exhibition flying that year. The new 4-place flying boat was completed and flown in June, then work was started on a large 7-passenger twin engine flying boat of 75 foot span, using two 100 H.P. Roberts engines. This was successfully test flown later in the year.

Benoist moved his operations to Chicago in the early spring of 1915, but apparently kept his St. Louis facility intact. That spring he continued development work on the large twin-engine boat and had orders for additional standard flying boats. He also built a small single-seat tractor biplane for Curt Day, which was used in exhibitions that season. [[strikethrough]] using [[/strikethrough]] It was powered with a 50 H.P. 6-cylinder radial engine. During the summer months Benoist operated passenger-carrying planes at the Chicago Beach Hotel and Lincoln Park which did a substantial business. Work on the large twin-engine flying boat was carried on at St. Louis, and in December Rodger Jannus conducted a series of tests of this craft on the river north of the city. J.D. Smith was kept busy delivering and demonstrating new flying boats to purchasers.

In May 1916, Benoist abandoned his St. Louis and Chicago operations and moved the business to Sandusky, Ohio, where he located in a portion of the Roberts Motor Company shop. That summer he built and sold some all-new [[strikethrough]] model [[/strikethrough]] planes, one a 45-foot span land tractor biplane [[strikethrough]] having [[/strikethrough]] with an all-steel fuselage [[strikethrough]] with [[/strikethrough]] and wood-framed cloth-covered wings. Another was a new pusher biplane flying boat, with the engine mounted between the wings having a direct-drive propeller, abandoning the [[strikethrough]] characteristic [[/strikethrough]] engine in the hull with chain-propeller drive for the first time. During November Benoist entered a bid with the United States Government to supply military planes, but was not successful in getting an order.

In February 1917, Benoist exhibited one of his latest flying boats at the first Pan American Aeronautic Exposition at Grand Central Palace in New York City. Unable to get any United States military business he left for Europe about this time where he reportedly succeeded in securing some introductory orders for a few planes. Upon his return he started a flying school at Sandusky and inaugurated an airline for the summer months between Sandusky and nearby Cedar Point Resort, with an afternoon flight to Put-in-Bay and return. There is evidence that Benoist

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