Bicycle - the first bicycle

Bicycle, Latin for Bicyoletta, is the Cargo bike of "fast" and "walk", Chinese translation "bike". In 1815, the world's first bicycle appeared in France, it has no central axis and the pedal, cyclists, like walking, reaction with the help of a pedal, the wheel rolling forward. In 1869, the French king in front on the pedal, ride up and saves energy, speed is accelerated. By 1890, a British doctor changed the solid tyre to pneumatic tyre reduced the friction with the ground, again raise the speed. With the development of science and technology, after several major reforms to evolved into the Three wheel bikes style of bicycle. In terms of the modern bicycle, there have been several major innovations, one is the added variable speed device, a multistage speed, up to 10 to 21 gear, can adjust at will, adapt to different terrain and climate conditions, to tourism has brought great convenience and competition; Second, the improvement of material, to develop in the direction of qualitative light, solid, improved the speed; Three is the improvement structure, increase the bicycle number, category, popular now have a pedal bicycle, folding bike, elliptical teeth plate of bicycle and many people travel bicycle, etc.; Four is the improvement of power, countries with low frequency has been the whole bicycle, electric control hydraulic drive bike, so that the modern means of transport. The world's advanced racing bike, only 6-9 kg each. In order to further improve the speed of racing bike, such as performance, made in Japan "aerodynamic car", in 1981 the national bicycle competition held in France, winners JiXiJie, is to use the car. The aerodynamic car has attracted worldwide attention.