Triumph Bonneville America Triumph Bonneville America The Triumph Bonneville America is a British motorcycle designed and built in Hinckley, Leicestershire by Triumph Motorcycles Ltd. Compared with the standard Bonneville, the Bonneville America has a very different ride, with the wheelbase extended to , making it longer overall. The saddle was lowered and the steering head rake angle increased by 4.3 degrees giving a 33.3 degree rake. The America had the Bonneville's front disc but the front wheel was reduced to diameter and the rear wheel to with a larger disc brake. The America also had a larger fuel tank with a 'chromed' plastic
Bonneville Dam (Washington) side. Cofferdams were built to block half of the river and clear a construction site where the foundation could be reached. These projects, part of the Bonneville Dam were completed in 1937. Both the cascades and the old lock structure were submerged by the Bonneville Reservoir, also known as Lake Bonneville, the reservoir that formed behind the dam. The original navigation lock at Bonneville opened in 1938 and was, at that time, the highest single-lift lock in the world. Although the dam began to produce hydroelectricity in 1937, commercial electricity began its transfer from the dam in 1938. A