Chris Carr (motorcyclist) championships, the 2000 Formula USA Dirt Track Championship and the AMA 600cc Dirt Track championship seven times (1988–1993, and 1995). Carr was in contention for the 2006 Grand National Championship at the final race at Scioto Downs in Columbus, Ohio before dropping out with mechanical problems. He ended the season tied for fourth in points behind chief rival Kenny Coolbeth. Carr was inducted into the A.M.A. Motorcycle Hall of Fame in 2004. On September 5, 2006, Carr broke the motorcycle land speed world record at the Bonneville Salt Flats (Utah), with a two-pass 350.8 mph (562.6 km/h) average. He was
Triumph Model H Model H was fitted with a 499 cc air-cooled four-stroke single-cylinder engine. It was also the first Triumph not to be fitted with pedals, so was a true motorcycle. Engine differences from the previous Model A included a single cam wheel with two cams replacing separate cam wheels for the inlet and exhaust valve, and new design of cylinder casting. Valve head diameter was enlarged and the valves were spaced further apart. The Model H was fitted with a Sturmey-Archer three-speed countershaft gearbox operated by a hand gear change lever. More than 30,000 Triumph Model H motorcycles had been produced