Two-wheel drive

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Two-wheel drive

Two wheel drive or 2WD describes vehicles with a drivetrain that allows two wheel

Wheel

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation whilst supporting a load , or performing labour in machines....
s to receive power from the engine

Engine

An engine is a mechanical device that produces some form of output from a given input.An engine whose purpose is to produce kinetic energy output from a fuel is called a Wiktionary:prime mover; alternatively, a motor is a device which produces kinetic energy from a preprocessed "fuel" ....
simultaneously.

Two-wheeled vehicles
For two-wheeled vehicles such as motorcycles and bicycles, the term is used to describe vehicles which can power the front as well as the back wheel.

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Encyclopedia

Two wheel drive or 2WD describes vehicles with a drivetrain that allows two wheel

Wheel

Engine

Four wheeled vehicles

For four-wheeled vehicles, this term is used to describe vehicles that are able to power at most two wheels, referred to as either front

Front-wheel drive

Front-wheel drive is a form of Internal combustion engine/transmission layout used in motor vehicles, where the engine drives the front wheels only....
or rear-wheel drive. The term 4x2 is also used, to denote four total wheels with two being driven.

For vehicles that have part-time four wheel drive

Four Wheel Drive

The Four Wheel Drive Auto Company, more often known as Four Wheel Drive or just FWD, was founded in 1909 in Clintonville, Wisconsin as the Badger Four-Wheel Drive Auto Company by Otto Zachow and William Besserdich....
, the term refers to the mode when 4WD is deactivated and power is applied to only two wheels.

Two-wheeled vehicles

For two-wheeled vehicles such as motorcycles and bicycles, the term is used to describe vehicles which can power the front as well as the back wheel. The term 2x2 is also used to denote two total wheels with both being driven. 2x2 vehicles are typically either mechanically driven via chain or shaft or are hydraulic driven. This scheme greatly improves offroad performance, but is quite complicated and requires more power to operate, thus most 2WD machines are either "exotic" bikes for enthusiasts or created with special uses in mind. This is also including miata's and colorado's.

Manufacturers who have one in production include Rokon

Rokon motorcycle

Rokon is a New Hampshire based motorcycle manufacturer who builds unusual 2-wheel-drive Types of motorcycle#Off-road motorcycles which are sometimes referred to as a Moto-tractor....
. Manufacturers who are working or have worked on a prototype include ZID

Zid

Zid is a Bollywood films of 1976 Bollywood film directed by . The film stars .CastExternal links...
, Suzuki

Suzuki

is a multinational corporation headquartered in Hamamatsu, Japan that specializes in manufacturing compact automobiles, a full range of motorcycles, All-terrain vehicle, outboard motor, wheelchairs and a variety of other small internal combustion engines....
, Yamaha

Yamaha

Yamaha may refer to:* Yamaha Corporation, a Japanese company with a wide range of products and services** Yamaha Motor Company, a Japanese motorized vehicle-producing company...
and Honda

Honda

is a multinational corporation headquartered in Japan.The company manufactures automobiles, motorcycles, trucks, scooter , robots, jet aircrafts and jet engines, all-terrain vehicle, water craft, electrical generators, marine engines, lawn and garden equipment, and aeronautical and other mobile technologies....
.

Two-wheeled drive with sidecars

For three-wheeled vehicles such as motorcycles with sidecars, the term is used to describe vehicles which can power the sidecar as well as the back wheel. Sidecar drive vehicles are typically mechanically driven via a shaft and may or may not have a differential. This scheme greatly improves offroad performance, but is more complicated and requires more power to operate, thus most 2WD machines are vehicles created with special uses in mind such as trials or military use. The first use of sidecar drive appears in 1928 with the apparent independent invention of Baughan in the UK, and Mokharov in the USSR.