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  2. Motorized bicycle - Wikipedia

    en.wikipedia.org/wiki/Motorized_bicycle

    Motorized bicycle. A motorized bicycle is a bicycle with an attached motor or engine and transmission used either to power the vehicle unassisted, or to assist with pedalling. Since it sometimes retains both pedals and a discrete connected drive for rider-powered propulsion, the motorized bicycle is in technical terms a true bicycle, albeit a ...

  3. Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_engine

    A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft. (A four-stroke engine requires four strokes of the piston to complete a power cycle, in two crankshaft revolutions.)

  4. Single-cylinder engine - Wikipedia

    en.wikipedia.org/wiki/Single-cylinder_engine

    DKW RT 250 (1952–1953) motorcycle engine. A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder. This engine is often used for motorcycles, motor scooters, motorized bicycles, go-karts, all-terrain vehicles, radio-controlled vehicles, power tools and garden machinery (such as chainsaws, lawn mowers ...

  5. Types of motorcycles - Wikipedia

    en.wikipedia.org/wiki/Types_of_motorcycles

    The differences in power, displacement, torque, and weight are all variables that balance the competition between two-stroke and four-stroke engines. [36] Motocross sidecar outfits have bigger engines, usually four-stroke and often twin-cylinder. Motocross bikes are also used in freestyle motocross. Trial motorcycle

  6. Bicycle - Wikipedia

    en.wikipedia.org/wiki/Bicycle

    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.

  7. Bicycle and motorcycle dynamics - Wikipedia

    en.wikipedia.org/wiki/Bicycle_and_motorcycle...

    Animation of a computer-generated, simplified model of bike and passive rider demonstrating uncontrolled, but stable weave. Bicycles leaning in a turn. Bicycle and motorcycle dynamics is the science of the motion of bicycles and motorcycles and their components, due to the forces acting on them. Dynamics falls under a branch of physics known as ...

  8. Two- and four-stroke engines - Wikipedia

    en.wikipedia.org/wiki/Two-_and_four-stroke_engines

    The M4+2 engine has a four-stroke piston and a two-stroke piston. The shaft of the four-stroke piston rotates twice as fast as the shaft of the two-stroke piston, and the two-stroke part always runs at half speed. This ensures that both parts work optimally regarding fuel consumption at all times. The same principles apply to having two ...

  9. List of bicycle types - Wikipedia

    en.wikipedia.org/wiki/List_of_bicycle_types

    A pedal cycle, commonly known as a bicycle is driven by legs and feet on pedals. A hand-cranked bicycle or handcycle is driven by arms and hands. A rowing cycle is driven by a rowing action using both arms and legs. A treadle bicycle is driven by a reciprocating, not rotary, motion of the feet. A bucking bike (with one or more eccentric wheels ...

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