Leonardo Da Vinci:
Sketches showing a primitive version of a bicycle, purported drawn by Leonardo Da Vinci surfaced in 1974. More beguiling than the Mona Lisa, at least to me, is the sketch of a bicycle in one of Leonardo da Vinci's notebooks.
It probably was drawn about 1493, almost 400 years before the bicycle was actually invented. Historians say no chain-driven, pedal-powered two-wheeler was built with the tools and materials of Leonardo's time, but it is possible Leonardo envisioned such a vehicle. He had drawn other gear and chain mechanisms, and his spring-driven wagon was a forerunner of the modern automobile.
It probably was drawn about 1493, almost 400 years before the bicycle was actually invented. Historians say no chain-driven, pedal-powered two-wheeler was built with the tools and materials of Leonardo's time, but it is possible Leonardo envisioned such a vehicle. He had drawn other gear and chain mechanisms, and his spring-driven wagon was a forerunner of the modern automobile.
Fred A. Birchmore:
He is only 25 years old. He circled the world only riding a bicycle in 1935, The entire trip through Europe, Asia, and the United States. He covered directly forty thousand miles.He pedaled about 25,000 miles. The rest of them rode a boat, also he went through seven sets of tires.