Motorcycle a three-speed gearbox and belt transmission. It was so popular with its users that it was nicknamed the "Trusty Triumph." By 1920, Harley-Davidson was the largest manufacturer, with their motorcycles being sold by dealers in 67 countries. In the 1950s, streamlining began to play an increasing part in the development of racing motorcycles and the "dustbin fairing" held out the possibility of radical changes to motorcycle design. NSU and Moto Guzzi were in the vanguard of this development, both producing very radical designs well ahead of their time. NSU produced the most advanced design, but after the deaths of four
Curtiss V-8 motorcycle Motor Cycle", the first of over 100 books in the Tom Swift series, was published shortly after the V-8 record setting run. The record setting V-8 motorcycle is now in the Smithsonian's National Air and Space Museum. The Air and Space museum lent it to the Guggenheim for the 1998 "The Art of the Motorcycle" exhibition in New York. The Curtiss OX-5 aero engine, a successor of the V-8 motorcycle engine, powered several United States civilian and military aircraft. More than 10,000 were manufactured. Curtiss V-8 motorcycle The Curtiss V-8 motorcycle was a V8 engine-powered motorcycle designed and built by