BSA Rocket 3/Triumph Trident adaptations only, available from the factory as part-numbered inventory. Williams' team won consecutive 750 cc production races at the Isle of Man TT for the five years between 1971 and 1975, and in the new F750 event for race-specification machines, Triumph and BSA machines with Rob North frames placed first and second. Bert Hopwood recommended a production version of the racing triple, producing at 8,250 rpm, but his suggestion was not adopted. Further racing development was done in Duarte, California under racing manager Dan Macias. Tom Mellor set four world speed records at the Bonneville Salt Flats in September 2008
Triumph Model H Harry Ricardo, known as the Model R Roadster. When the Model H was discontinued in 1923 a total of 57,000 had been produced. Triumph Model H The Triumph Model H (also known as the 'Type H' and 'the Trusty') is a British motorcycle made by Triumph Engineering Co Ltd in Coventry, England. A total of 57,000 Triumph Model H motorcycles were made from 1915 until production ended in 1923. At the start of the First World War in 1914 the British Government needed effective communications with front line troops and replaced messengers on horses with despatch riders on motorcycles. A