Bonneville Motorcycle Speed Trials speed of 100mph, riding a Yamaha 350cc two-stoke motorbike. The event was held from 26-31 August. Valerie Thompson became the first female driver riding a motorcycle over 300 mph, reaching a speed of 489.663 km/h. The event was cancelled in 2015, due to poor salt flat conditions. Bonneville Motorcycle Speed Trials Bonneville Motorcycle Speed Trials (BMST) also known as AMA Land Speed Grand Championship is a motorcycle land speed racing event, held annually at Bonneville Speedway, US. The event is sanctioned by American Motorcyclist Association (AMA) and Fédération Internationale de Motocyclisme (FIM). Many AMA-certified US national speed records, and FIM-certified
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