In the event of a match, the referee may fire two shots to stop the match:(1) fall;(2) flat tire;(3) the main parts of the car are broken.But the result of the competition will be decided by the referee according to the actual situation.
Huang Li Zhuang after about 100 years, the French Siv Lark in 1790 made a wooden bicycle.One of the human mechanics of a bicycle, a complex machine consisting of many simple machines. The Kangxi years of the Qing Dynasty, Huang Li Zhuang developed bicycle. "The unofficial grand" records: "Huang Li Zhuang was a buggy, more than three feet long, can sit one person, not to be able to push. When the hand crank is complex for paraxial, as ever, living with a foot for eighty days in." This shows that he made bicycles, front and rear each have a wheel, cyclists, crank shaft next to the bend, the car will be able to advance, this is the earliest recorded bike.
In 1888, the Irish vet Dunlop, get inspiration from bovine stomach expansion treatment, his home in the garden for watering rubber tube into a round stick, up, mounted on bicycle wheels, to participate in the cycling race, even among the best, has aroused great interest. Pneumatic tire is a bicycle history landmark initiative, it increases the bicycle elasticity, not because of the uneven pavement and vibration; we can greatly improve the driving speed, increasing friction force between the wheels and the road. In this way, the riding performance of the bicycle is fundamentally changed, and the use function of the bicycle is perfected.Also in 1888, the city of Coventry, John.K. stahly produced the first modern car bicycle -- "safe" bicycle. Its main feature is the use of diamond frame structure, so that the body has higher stiffness and strength, the rear wheel chain driven, and through the front fork to direct the direction.
Modern prototype[2], a truly modern form of bicycle, was born in 1874. In the year of 1874, Luo Song, the British, made a unique choice of chains and sprockets on his bicycle and pushed the car forward with the back wheels. But it's still big front wheels and small rear wheels. It doesn't look coordinated and unstable.In 1886, Britain's John.K. stahly, is a mechanical engineer from the mechanics, kinematics point of view to design a new bike style, bicycle mounted on the front fork and brakes, front and rear wheels of the same size, in order to maintain balance, and made the diamond frame with steel, is also the first use of the rubber wheel. Stahly not only improved the structure of bicycles, but also restructured a number of machines used in production of bicycle components, opened up broad prospects for mass production and application of bicycle, so he was later known as the "father of a bike". The bicycle models designed by Michael are almost the same as those of bicycles today.
