Bikotor was a motorcycle produced in 1951.
It was, in fact, a cycle attachment that had its 47cc two-stroke engine positioned over the rear wheel, which was friction driven. To keep it lightweight, it was alloy constructed with a flywheel magneto and petroil lubrication. The fuel tank was strapped on top of the crankcase. Despite being neat and well made, it was not popular and the make soon disappeared.
Sources of Information
The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press 2004 ISBN 1 86126 674 X