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first with this construction in the United States. This plane was successfully flown, but [[strikethrough]] nothing came of the venture[[/strikethrough]] was not a commercial success. 

During mid-1920 Conover returned to Dayton-Wright where he assisted in the construction of the RB-1 Rinehart-Baumann Gordon Bennett race plan, then was included in the group that went to France that fall for the race event. [[strikethrough]] Conover remained [[strikethrough/]] Because of a control-cable failure the RB-1 had a forced landing and was out of the race. [[re-type]] Conover remained with Dayton-Wright on experimental and development work through 1923. 

In 1924 he joined the Johnson Aeroplane and Supply Company, Dayton, with Ivan H. Driggs where he assisted in building the Driggs-Johnson Light plane, called the "Bumble-Bee", [[Strikethrough]] for [[strikethrough/]] which was entered in the light plane race event of the National Aid Races that fall in Dayton. This outstanding full-cantilever, high-wing, enclosed-cabin monoplane was powered by a 4-cylinder Henderson motorcycle engine. [[Strikethrough]] and, [[Strikethrough/]]Flown by [[Strikethrough]] Johnson pilot [[Strikethrough/]] James Johnson, it easily carried away all honors in the light plane events. Conover's [[Strikethrough]] was [[Strikethrough/]] mechanical skills was an important [[Strikethrough]] there and [[Strikethrough/]] contribution[[strikethrough]] ed  [[Strikethrough/]] to [[Strikethrough]] ward the [[Strikethrough/]] its success [[Strikethrough]]of the venture [[Strikethrough/]]. While there, Driggs and Conover also designed and built an OX-powered three-place biplane for passenger [[strikethrough]] hopping [[/strikethrough]] flying, calling the "Canary". 

In 1925 Driggs formed the Driggs Aircraft Corporation at Dayton and Conover became his Shop Superintendent. In rented shop space they started a re-design of the Johnson "Bumble Bee" which they called the [[strikethrough]] "DriggsDart" [[Strikethrough/]] "Driggs-Dart."  Of the same time general configuration it embodied many improvements and was powered by a Wright-Morehouse 2-cylinder opposed air engine.*

In May, 1926 Driggs sold a "Dart" plane to the Air Service with a special wing equipped with leading edge slots and flaps for research test work at McCook Field. Following this a special commercial monoplane was designed and built for Captain Eddie Rickenbacker of Detroit. Known as the "Rickenbacher Coupe", it was a two-plane side-by-side cabin [[Strikethrough]] machine [[Strikethrough/]] plane with a folding high-wing. [[Strikethrough]] arrangement, powered by [[strikethrough//]] It's engine was the new Rickenbacker 5-cylinder 65 H.P. AIR CAT radical [[Strikethrough]] engine [[Strikethrough/]]. After brief tests [[strikethrough]] in [[Strikethrough/]] at Dayton in September the plane was flown to Detroit by Driggs pilot Jack Laass. [[Strikethrough]] in September. [[Strikethrough/]] A Second Driffs "Dart" monoplane was flown by Laass in the Air Tours and National Air Races that year. Late that year Driggs decided to make a light 2-seat tandem dual-control training biplane. Called the "Dart II" it was powered by a 3-cylinder 35 [[Strikethrough]] H. P. [[Strikethrough/]] h.p. Anzani engine. It proved successful and two of

*Designed by the [[Strikethrough]] writer [[Strikethrough/]] author of these biographies. 

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