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Virtually all bikes perform these functions in essentially the same manner. Pedals, chains, and gears allow force to be applied to the rear wheel. The front wheel can be turned relative to the rear one to influence direction. And brakes use friction to convert the bike's kinetic energy into heat, slowing the bike down (or, at least, making it go less rapidly than it would otherwise have gone!) It is useful to remember that, while stopping is the main function of brakes, they can be extremely useful in steering as well, from sliding your back wheel out, or dragging it back in line, to turning extremely tight corners on your front wheel! The frame holds together the bits that perform these functions, and attaches them to you. The wheels and suspension attach them to the ground. |
