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 Ricardo track at Brooklands at 68 mph, broke the Brooklands hour record at 76.74 mph the "flying mile" at 87.8 mph. Much of the credit went to the new racing fuel which was eventually banned. In 1923 a 'Model R' Fast Roadster model won a gold medal in the ISDT. Triumph Ricardo The Triumph Ricardo was a British single-cylinder motorcycle manufactured by the Triumph Engineering Co Ltd between 1921 and 1928. Named after engine designer Sir Harry Ricardo it featured an innovative four valve head design and was capable of over 70 mph, set three world speed records and won a