Concept cluster: Recreation > Vehicle drivetrain systems
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2WD
n
A two-wheel drive vehicle/
4WD
n
(automotive) Initialism of four-wheel drive. [A four-wheeled vehicle with a drivetrain that allows all four wheels to receive torque from the engine simultaneously.]
4x2
n
A four by two.
4x4
n
(automotive) A four-wheel vehicle with four-wheel drive.
4x4x4
n
(automotive) A four-wheeled vehicle with four-wheel drive and four-wheel steering.
8x8x8
n
(automotive) an eight-wheeled vehicle with eight-wheel drive and eight-wheeled steering, each wheel has powered drive, and each axle is steerable. (Abbreviation of 8 wheel steering with 8 drive wheels on 8 wheels.)
ABS brake
n
Antilock brake.
aerial cableway
n
A large assortment of cables, suspended above the ground at a minesite or quarry, used to transport tools and equipment over rough territory.
all-wheel
adj
Having a transmission that drives all wheels, particularly where power is directed to the wheels with the best contact with the ground.
all-wheel drive
n
A wheeled vehicle with a drivetrain that allows all wheels to receive torque from the engine simultaneously, particularly where power is directed to the wheels with the best contact with the ground.
articulated
adj
Of a vehicle, composed of component parts each with its own wheels and chassis, e.g. an articulated lorry, articulated bus, or certain kinds of streetcars and trains.
AWD
n
(automotive) Initialism of all-wheel drive. [A wheeled vehicle with a drivetrain that allows all wheels to receive torque from the engine simultaneously, particularly where power is directed to the wheels with the best contact with the ground.]
axle guard
n
The part of the framing of a railway car or truck by which an axle box is held laterally, and in which it may move vertically.
axle-driven
adj
Driven from a revolving axle, such as on a moving rail vehicle.
big wheel
n
(US) A low-riding tricycle with a large front wheel.
bottom bracket
n
(cycling) A bicycle part that connects the crankset (chainset) to the frame and allows the crankset to rotate freely.
brake
n
That part of a carriage, as of a movable battery, or engine, which enables it to turn.
brake assembly
n
The collective replacement parts used to repair an automobile's worn down brakes.
brake bias
n
The front and rear distribution of braking power. The brake bias should match the traction of the vehicle while braking.
brake lining
n
Consumable surfaces in brake systems, such as drum brakes and disc brakes used in transport vehicles.
brake shoe
n
(rail transport) A hard friction-producing element which is pressed against the tread of a wheel to provide braking.
brifter
n
(cycling) On a bicycle, a lever that combines brake and gear shifter functions.
centre-axle trailer
n
A trailer having only a single axle or group of axles, positioned at or near the centre of gravity.
chassised
adj
(in combinations) having a particular type of chassis
coasting
n
The act of disengaging the gears of a moving vehicle and rolling along without the use of engine power.
coupling pole
n
A connecting piece between the front and back axles of a wagon or trailer, often equipped with pins for extending or shortening the bed.
crosstie
n
Alternative form of cross-tie [(rail transport) A sleeper supporting and connecting the rails, and holding them in place.]
differential steering
n
(automotive, mechanical engineering) Steering by means of driving the wheels or treads on one side of a vehicle faster than those on the other side, or driving the wheels or treads on one side in the forward and on the other side in the reverse direction.
driveline
n
(automotive) The drivetrain minus the engine and transmission
driving axle
n
An axle which transfers power to a powered wheel from an engine, as in a steam locomotive.
FF
n
(automotive) The Ferrari FF (Ferrari Four), an all-wheel drive grand tourer by Ferrari.
fixed-gear bicycle
n
A bicycle that does not have a freewheel, and only has a single gear ratio.
four on the floor
n
Alternative spelling of four-on-the-floor [(motor vehicles) A four-speed manual transmission whose gearshift lever is mounted beside the driver on the floor of the vehicle.]
four-by-four
n
A four-wheel-drive vehicle with a four-speed transmission.
four-cycle
n
Any four-stroke cycle, such as the Otto cycle, for an internal combustion engine.
four-door
adj
having four doors
four-rings
n
(slang, informal) An Audi automobile, in reference to the logo which is four interconnected rings.
four-stroke
n
A four-stroke engine.
four-wheel
adj
Having four wheels
four-wheel drive
n
A four-wheeled vehicle with a drivetrain that allows all four wheels to receive torque from the engine simultaneously.
four-wheel-drive
adj
(automotive) four-wheel drive when used as an attributive adjective.
front-wheel drive
n
Engine layout in motor vehicles where only the front wheels are driven.
FWD
n
(automotive) Initialism of front-wheel drive. [Engine layout in motor vehicles where only the front wheels are driven.]
geartrain
n
Alternative form of gear train [(mechanical engineering) A system of interconnected gears.]
groupset
n
(cycling) A complete set of matching bicycle drive control components, including brake calipers, cranks, chainrings, bottom bracket, etc.
half-track
n
A vehicle combining both wheels and treads (caterpillar tracks).
headstock
n
(rail transport) A transverse structural member at the extreme end of a rail vehicle's underframe, also used on some bogies.
hemi
n
(automotive) A vehicle equipped with such a motor engine.
jackshaft
n
A wheelless axle used to turn the wheels of a locomotive.
lift shaft
n
(UK) Alternative form of liftshaft. [(UK) The vertical shaft in a building which contains a lift (elevator) platform or cab, and through which it is moved from floor to floor.]
midengined
adj
Having the engine between the rear and front axles (in a motor vehicle).
motorized
adj
Equipped with a motor.
power steering
n
(automotive) A system for reducing the driver's effort to steer, by using a power source to assist in turning the wheels.
pushrod
n
(cycling) A rod in an internal gear hub that actuates the shifting mechanism.
rear-wheel drive
n
Engine layout in motor vehicles where only the rear wheels are driven.
rimpull
n
The amount of tractive force located where the driving wheels contact the surface on which they travel.
rod for one's breech
n
Alternative form of rod for one's back [(idiomatic) The means of one's own punishment or downfall.]
RWD
n
(automotive) rear-wheel drive
shoe
n
The part of a railroad car brake which presses upon the wheel to retard its motion.
steamroller
v
To level a road using a steamroller.
three-wheel
adj
having three wheels
two-wheel drive
n
(vehicles) A four-wheeled vehicle in which only two of the wheels receive power from the engine.
wheel well
n
The part of a car or truck under the fender, where the wheel has space to turn.
wheelarch
n
Alternative form of wheel arch [The shaped part of the bodywork of a car or other vehicle that allows the wheel to be accessed, and in the case of front wheels, enable them to be steered.]
wheelbased
adj
(in combination) Having the specified kind of wheelbase.
wheely
adj
(informal) Having characteristics of a wheel.
zip-line
n
Alternative form of zipline [A pulley suspended on a cable mounted on an incline, designed to enable a user to travel from one point to another by means of gravity.]
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