History of the motorcycle by 1902, and would rise to 32,000, its best ever, in 1913. Indian produced over 20,000 bikes per year. The oldest surviving Russian-manufactured motorcycle, the Rossiya, dates from 1902. The American company Harley-Davidson started producing motorcycles in 1903. During this period, experimentation and innovation were driven by the popular new sport of motorcycle racing, with its powerful incentive to produce tough, fast, reliable machines. These enhancements quickly found their way to the public's machines. Chief August Vollmer of the Berkeley, California Police Department is credited with organizing the first official police motorcycle-patrol in the United States in 1911. By 1914,
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