Vincent Motorcycles Rolland "Rollie" Free (18 November 1900 – 11 October 1984) was a motorcycle racer best known for breaking the US motorcycle land speed record in 1948 on the Bonneville Salt Flats, Utah on a Vincent Black Lightning. The picture of Free, prone and wearing a bathing suit, has been described as the most famous picture in motorcycling, and Russell Wright won another World Land Speed Record at Swannanoa with a Vincent HRD motorcycle in 1955 at . The 500 cc Meteor and Comet singles were introduced, along with a 500 cc racer, the Vincent Grey Flash. The Grey Flash racer
Triumph Model H by the end of the war in 1918. The Triumph Engineering Co Ltd had been using the advertising slogan "Trusty Triumph" since 1910 and the Model H became known as 'The Trusty' as it proved reliable in wartime conditions, despite a weakness in the front fork spring. This was prone to break on rough ground, so despatch riders would strap a leather belt around it as a precaution. After the war, the motorcycle didn't have enough speed for racing, which was one of the principle markets for motorcycles at the time, so Triumph moved on to a motorcycle designed by