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  2. Four-wheel drive - Wikipedia

    en.wikipedia.org/wiki/Four-wheel_drive

    The car operates primarily as a rear-wheel drive vehicle. Clutches in the front transaxle engage when the rear wheels slip. Drive to the front wheels is transmitted through two infinitely variable clutch packs that are allowed to 'slip' to give the required road wheel speeds. The front transaxle has three gears, two forward, and reverse.

  3. Chassis configuration - Wikipedia

    en.wikipedia.org/wiki/Chassis_configuration

    Configurations. The formula is defined as follows: A × B / C or A × B * C with: A = number of wheels (twin-mounted tires count as one wheel) B = number of driven wheels

  4. Four Wheel Drive - Wikipedia

    en.wikipedia.org/wiki/Four_Wheel_Drive

    In 1939, the company formed a flight department. Their acquisition of a used Waco biplane would eventually evolve into North Central Airlines. 4-Ton Truck, 4x4 (Four Wheel Drive Model HAR-1) During the Second World War the Four Wheel Drive Model HAR-1, a 4-Ton, 4x4 Truck, was produced and delivered to the US-Army. [8]

  5. Powertrain layout - Wikipedia

    en.wikipedia.org/wiki/Powertrain_layout

    A rear-engine, front-wheel-drive layout is one in which the engine is between or behind the rear wheels, and drives the front wheels via a driveshaft, the complete reverse of a conventional front-engine, rear-wheel-drive vehicle layout. This layout has only been used on prototype and concept cars.

  6. Mid-engine, four-wheel-drive layout - Wikipedia

    en.wikipedia.org/wiki/Mid-engine,_four-wheel...

    The centre differential contained within many 4 wheel drive cars is similar to the conventional differential in a 2-wheel drive car. It allows torque to be distributed to both drive axles whilst allowing them to spin at different speeds, which vastly improves the cornering of a 4-wheel drive car on surfaces with high grip such as tarmac.

  7. Jeep four-wheel-drive systems - Wikipedia

    en.wikipedia.org/wiki/Jeep_four-wheel-drive_systems

    The drive modes are the same as with the Dana 18 and 20 transfer cases: 2Hi, 4HI PT, and 4LO PT. The 4WD modes are not for use on high-traction surfaces such as dry roads. The NP208 was used through at least 1987. More commonly, Command-Trac is used to refer to the NP/NV-231 or NP-207 transfer cases introduced along with the Jeep Cherokee (XJ ...

  8. Four by four (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Four_by_four_(disambiguation)

    Four by four or 4x4 refers primarily to a four-wheel drive, a vehicle with a drivetrain that allows all four wheels to receive torque simultaneously from an engine. It may also refer to: Film, TV and games

  9. Front-engine, four-wheel-drive layout - Wikipedia

    en.wikipedia.org/wiki/Front-engine,_four-wheel...

    In automotive design, an F4, or front-engine, four-wheel drive (4WD) layout places the internal combustion engine at the front of the vehicle and drives all four roadwheels. This layout is typically chosen for better control on many surfaces, and is an important part of rally racing, as well as off-road driving.