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
Tempo (motorcycle manufacturer) version of the fan cooled 49 cc engine producing 4,3 hp. Sold as the Comet, this small motorcycle had a longer seat allowing two persons to ride. Similar versions of the Panter was sold asTrigger and Sprint, sporting a 5,2 hp full effect version of the wind cooled engine and somewhat different styling. Some other examples: 1931-1934 98cc Sachs Tank shifter and pedals. First motorcycle produced by Øglænd. 1951-59 98, 125, 150 or 175cc Sachs From 1953 with 2 seats. 1937-49 98, 125 or 150cc Villers engines. Engine models used were 9D, 9DF, 10D, 10DF, 12D, and 30C . 1959-66