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,
BSA unit twins new cycle parts, including the "oil-bearing frame". Apart from cosmetic items, the cycle parts were shared with the Triumph twins. (Triumph was a subsidiary of BSA). To produce a 750cc machine for AMA Class C racing, BSA lengthened the stroke of Lightening's crankshaft by 11mm to give a displacement of 751cc. 202 machines were produced to meet the minimum production requirements. All were exported to the US, most to the East Coast distributor in Baltimore. By 1972 BSA were in serious financial trouble and the Firebird Scrambler was discontinued in an attempt to reduce costs. With rival British motorcycle manufacturer,