Unicycle

A unicycle is a one-wheeled human powered vehicle. Unicycles are similar to, but less complex than, bicycles.

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Unicycles comprise a few key parts: the wheel and hub(axle), the frame, the seat, and cranks and pedals. The wheel is the main part of the unicycle; it is essentially a bicycle wheel with a special hub so that the frame and cranks can attach to the side. Unicycles use direct drive, with the crank's rotation directly connected to that of the wheel, although some modern unicycles are using gears in the hub to increase riding distance. The frame sits above the wheel, and the seat is located on top of the frame.

Human powered vehicle: A human powered vehicle (HPV) is a vehicle powered solely by human muscular effort. The most common HPVs are rowing boats, canoes and bicycles, but many other kinds of vehicles can employ human power, including submarines, aircraft, hydrofoils, hovercraft and kinetic sculpture vehicles....

Bicycle: A bicycle, or bike, is a pedal-driven land vehicle with two wheels attached to a frame, one behind the other. First introduced in 19th-century Europe, it evolved quickly into the familiar current design. With over one billion in the world today, bicycles provide the principal means of transportation...

Wheel: A wheel is a circular object that, together with an axle, allows low friction in motion, by rolling. Common examples are found in transport applications. More generally the term is also used for circular objects rotating for other purposes, such as a wheel and axle and a flywheel....

Unicycle related Images and Photos (experimental)

Puzzlers Unicycle

Baby on Unicycle