Classification of bicycles
Road bikes are used on smooth roads. Because the resistance of smooth road surface is small, the design of road bike pays more attention to high speed. They often use downward curved handlebars, which can reduce wind resistance, narrow high-pressure and low-resistance tires, higher gears and larger wheel diameters than ordinary mountain off-road vehicles. Because the frame and accessories don't need to be strengthened like mountain bikes.
Therefore, when riding on the road, it is often light and efficient. Because the frame does not need to be strengthened, it often adopts a simple and efficient diamond design, and the road bike is the most beautiful bicycle. Fitness bike, healthy, fashionable, new concept and new concept design, is characterized by dual power of hands and feet, and the speed can reach 40 km/h.
There are many ways to work and the fitness effect is good. When riding this kind of bicycle, both hands and feet can do work on the bicycle drive at the same time, or they can do work with their hands or feet alone. Adopting the straight line method of pulling the pedal and the swing method of pulling the swing lever by hand not only improves the running speed of the bicycle, but also exercises the leg muscles and arm muscles. Obtained a number of national patents.