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The earliest record of a pedalo is perhaps Leonardo da Vinci's diagram of a craft driven by two pedals. [1] [2] Typically, a two-seat pedalo has two sets of pedals side-by-side, designed to be used together. Some models, however, have three pedals on each side, to allow a person boating alone to pedal from a centrally seated position.
Groups of motor units often work together as a motor pool to coordinate the contractions of a single muscle. The concept was proposed by Charles Scott Sherrington. [2] Usually muscle fibers in a motor unit are of the same fiber type. [3] When a motor unit is activated, all of its fibers contract.
Handcycle with high stance and upright riding position Handcycle with low stance and recumbent riding position. A handcycle is a type of human-powered land vehicle powered by the arms rather than the legs, as on a bicycle.
A Punt Pedalo Birchbark canoe. Human-powered watercraft include prehistoric, historic and well-known traditional and sporting craft such as canoes, rowing boats and galleys. The term human-powered boat is often used for more modern craft using propellers and water wheels for propulsion. These can be more efficient than paddles or oars and ...
A rickshaw, or jinrikisha, is a light, two-wheeled cart consisting of a doorless, chairlike body, mounted on springs with a collapsible hood and two shafts. Finished in black lacquer-ware over timber, it was drawn by a single rickshaw runner.
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist. Bicycles were introduced in the 19th century in Europe. By the early 21st century there were more ...
In mechanical engineering, a kinematic diagram or kinematic scheme (also called a joint map or skeleton diagram) illustrates the connectivity of links and joints of a mechanism or machine rather than the dimensions or shape of the parts. Often links are presented as geometric objects, such as lines, triangles or squares, that support schematic ...
Weymann Motor Bodies limited, founded in England in 1922 with the first licences issued in 1923 to, amongst others, the Rover Company. [1] In 1925 a move was made into actual body production as well as licensing and the Cunard coachbuilding company based in Putney, South London, was purchased.