Why can't a 200-kilogram fat man tread on a skateboard? What are the secrets of its design and structure?
There are more and more skateboarders in big cities nowadays. The thin wooden boards are composed of seven layers. They are enough to support the weight of an adult man and the pressure of landing in the jump. Besides, the structure of skateboards and the wheels of skateboards are also precisely manufactured.
Skateboards wheels, are made of polyurethane. Wheels have different diameters, shapes and hardness. Small wheels start fast, but lack of stamina, suitable for skills; large wheels can easily glide on less flat ground. Skateboards are also very particular.