Bicycles

It is a human-powered personal transport vehicle. It is propelled by the passenger himself, who drives the vehicle with the muscular effort of the legs, particularly by means of pedals or cranks. Its basic components are two wheels, generally of equal diameter and arranged in a line, a pedal transmission system , a frame that gives it the structure and integrates the components, a handlebar to control the direction and a saddle to sit on. The displacement is obtained by turning the symmetrically arranged pedals with the legs, each with a lever known as a crank. They are assembled in the frame, and in general the right pedal is the one with the largest star or plate where the chain is mounted, which in turn turns the sprocket, which finally turns the rear wheel on the ground, thus causing displacement .