The design method of bicycle

The world's first truly practical bicycle appeared in the early 19th century. In 1817, the germans DE les in Paris, France invented with the wooden two rounds of the bike. Bicycle came quickly Three wheel bikes the europeans preferred means of transportation. In the 19th century some europeans also conceive some ideal bicycle. Bicycle in the early stages of invention, people think that the greater the faster the speed of the wheel, two men riding a high wheel for almost one bike. In the invention of the bicycle phase, some people didn't take the bike before and after the two wheels electric trike into place, but the two wheels made placed around, the appearance of this kind of bicycle is similar to a wheelchair. This is early europeans design a tricycle. Tricycle balance better, easier for people to learn to ride a tricycle. As the bicycle technology improvement in the future, tricycle evolved into a kind of freight transport. It is also a tricycle, but designers put two momentum wheel in the front, a training wheels on the rear. When people is riding the bicycle in front can also do a passenger. This kind of bicycle with modern can bring people in the back of the bike design concept is just the opposite.