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powered by two Liberty 6-cylinder engines driving tractor propellers. Conover went with "Benny" Whelan to conduct preliminary flight tests of this plane at Toledo Beach, Ohio, on Lake Erie where the plane proved to be badly out of balance and very under-powered. As a result the plane was taken back to Dayton for revisions and two 12-cylinder Liberty engines were installed. The plane was then taken to Leamington, Ontario, Canada for further tests and having proven to be successful was turned over to the Canadian owners.
    Following this, Conover was employed during mid-1919 by Mr. Knuhl, a Uniontown, Pennsylvania, financier. There he personally made an OX-powered biplane called the "Bluebird." It had a welded steel-tube fuselage, being one of the first with this construction in the United States. This plane was successfully flown, but 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 plane, then was included in the group that went to France that fall for the race event. Because of a control-cable failure the RB-1 had a forced landing and was out of the race. Conover remained with Dayton-Wright on experimental and developmental 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," which was entered in the light plane race events of the National Air Races that fall in Dayton. This outstanding full-cantilever, high-wing, enclosed-cabin monoplane was powered by a 4-cylinder Henderson motorcycle engine. Flown by James Johnson, it easily carried away all honors in the light plane events. Conover's mechanical skill was an important contribution to its success. While there, Driggs and Conover also designed and built an OX-powered three-place biplane for passenger flying called the "Canary."

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Transcription Notes:
Coudln't tell if the plane was "RB-1" or "RB-I" as the type characters look the same. ->Googled it. It should be “RB-1.”