Glenn Curtiss had an early interest in bicycles, and opened a bicycle shop in Hammondsport, New York. Not content to sell bicycles, he was soon building his own products, and designing new models. When small, one cylinder motors were put on bicycles, he left the world of bycicles and entered the world of engines and motorcycles. He designed his own lightweight engines, and the motorcycles they powered. In 1907 Curtiss drove a motorcycle with an air cooled V-8 engine to a speed of 136 miles an hour. The engine delivered 40 hp, and weighed 275 pounds. According to a Scientific American article of the day, the motorcycle experienced a broken universal joint at 90 mph, which buckled the frame. The record made him the fastest human on a motorcycle or car, until a car beat that speed 11 years later. A motorcycle would not beat that speed until 1930. Curtiss' speed was actually slower than an earlier Stanley Steamer that achieved 140- 150 mph, but that run was not an officially timed event. Looking at the picture below, I'm not sure I'd want to go 136 mph on bicycle wheels.
Cutriss was drawn into the field of avaition because of his lightweight yet powerful motors, and competed with the Wright brothers as pioneer avaiator and airplane designer. He designed the first float plane, aelerons, and many other new features in airplanes. Curtiss airplanes served in WWI, and Curtiss' company became Curtiss Wright when it merged with the successors of the Wright Brothers.
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