Misplaced Pages

Gear stick

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

A gear stick (rarely spelled gearstick ), gear lever (both UK English ), gearshift or shifter (both U.S. English ), more formally known as a transmission lever , is a metal lever attached to the transmission of an automobile . The term gear stick mostly refers to the shift lever of a manual transmission , while in an automatic transmission , a similar lever is known as a gear selector . A gear stick will normally be used to change gear whilst depressing the clutch pedal with the left foot to disengage the engine from the drivetrain and wheels . Automatic transmission vehicles, including hydraulic (torque converter) automatic transmissions , automated manual and older semi-automatic transmissions (specifically clutchless manuals), like VW Autostick , and those with continuously variable transmissions , do not require a physical clutch pedal.

#537462

28-413: Gear sticks are most commonly found between the front seats of the vehicle, either on the center console (sometimes even quite far up on the dashboard ), the transmission tunnel (erroneously called a console shifter when the floor shifter mechanism is bolted to the transmission tunnel with the center console to cover up the shifter assembly when used with a rear or front-wheel drive vehicle), or directly on

56-599: A chess pawn when attached to the gear stick. The shift knob's principal function is the ergonomical interface between driver and the manu. The gear stick, as the name implies, is often just a machined or cast aluminium or steel rod with or without threading the shift knob is fitted on its end. In recent years, manufacturers have increased the variety of shifts knobs available to the consumer from inexpensive plastics to diamond-studded white gold. Center console (automobile) The center console ( American English ) or centre console in an automobile consists of

84-650: A refrigerator , in addition to the more traditional use as purely a surface for instrumentation (e.g., outside temperature display) and controls ( car audio ). The term "center console" (often Median console) often extends, as well, to the armrest between the driver's and passenger's seats, which in some vehicles (such as a Toyota RAV4 ) features one or more storage compartments under the armrest. Some cars include additional rear center console, which commonly includes entertainment and climate system controls (and possibly display screens and air vents), auxiliary power outlets, and sometimes window controls when these are not in

112-419: A central "neutral" position. Some vehicles have a special button to prevent accidental engagement of reverse. Others require that the lever be lifted (e.g. Nissan ), pressed down (e.g. Volkswagen ), or moved with extra force (e.g. BMW ) to engage reverse. In transmissions with reverse directly below fifth, there may be a mechanical lock-out preventing selection of reverse other than from neutral, thus preventing

140-471: A driver used to a six-speed transmission from engaging reverse while trying to select sixth. Some transmissions also have an electronically controlled error-prevention safeguard that blocks the first and sometimes the second gear from being selected if the vehicle is moving fast enough to exceed the engine's maximum RPM. This gear pattern can also be found on some heavy vehicles – such as lorries and tractors – in which first gear

168-404: A shifting linkage due to its shift-by-wire principle. It has the added benefit of allowing for a full width bench-type front seat (though some models with bucket seating as an option include it). It has since fallen out of favor, although it can still be found widely on North American-market pick-up trucks , vans, emergency vehicles (both law enforcement and EMS – the column shifter

196-478: A single "L" (for "low") position, which will hold the transmission in whatever lower ratio is required for climbing steep grades or for heavy acceleration: P-R-N-D-L . More modern automatic transmissions have employed a "J-gate" (pioneered by Jaguar ) where some gears are on the left-hand "arm", some on the right, and there is a sideways movement at the rear of the pattern. The second-generation Range Rover from 1995 used an "H-gate", with two parallel PRND gates on

224-419: Is an extra-low ratio for use in extreme standing-start conditions, and would see little use in normal driving. Automatic transmissions traditionally have had a straight pattern, adopting the classic P-R-N-D gate , with "P" being to the front, topmost position (or "P" all the way to the left on a column-mounted shifter); the corresponding shift positions being: All automatics use some sort of manual override of

252-628: Is another example. It is a revival of an approach used in the 1950s by the Chrysler push-button PowerFlite and the Packard Touchbutton Ultramatic . A shift knob also known as a gear knob , gear shift knob and stick shift knob is the physical interface between the gear stick and the driver's hand. Made of many materials from simple plastics through to platinum , it comes in many shapes sizes and weights. OEM shift knobs are generally spherical in shape, often resembling

280-404: Is instead in a "dog leg" position, to the left and rearwards. There is usually a spring-loading to return the stick to the central position. Reverse gear is commonly positioned in the best choice of location to avoid accidental engagement. A typical manual transmission vehicle, with (for example) five forward gears, will thus have seven possible positions: the five forwards gears, reverse gear, and

308-476: Is no need to package either remote mechanisms or complex interlocking arrangements. This has allowed designers to replace the gear stick completely with either button, rotary knobs (current Jaguar , Land Rover and Ford models are good examples of this), or a miniaturized gear stick on the center console. This can be seen in some Audis , BMWs and the Lincoln Continental . Japanese finger shift

SECTION 10

#1732783440538

336-720: Is retained where a floor shifter is unfeasible due to mounting the mobile data terminal and 2-way radio), and "full-size" US sedans such as the Ford Crown Victoria . A dashboard mounted shift was common on certain French models such as the Citroën 2CV and Renault 4 . Both the Bentley Mark VI and the Riley Pathfinder had their gear lever to the right of the right-hand drive driver's seat, alongside

364-417: The clutch engaged causes it to lurch forwards or backward since the starter motor by itself produces sufficient torque to move the whole vehicle; this can be highly dangerous, especially if the parking brake is not firmly applied and can be injurious to the starter and drivetrain. Therefore, novice drivers are taught to rock the knob of a manual gearbox from side to side before starting the engine to confirm that

392-401: The console or on steering column stalks instead. Manual shifters on the steering column, if having only three forward speeds, are typically called a three on the tree , and floor shifters having four forward speeds, are called four-on-the-floor . The lowest of these gears, if set at a much lower ratio than a typical 1st-gear ratio, is often called a granny gear . Starting the car in gear with

420-423: The control-bearing surfaces in the center of the front of the vehicle interior. The term is applied to the area beginning in the dashboard and continuing beneath it, and often merging with the transmission tunnel which runs between the front driver's and passenger's seats of many vehicles. Traditionally, vehicles with a gear stick have placed this control where the two areas of console and tunnel merge, or at

448-459: The doors (for example, in the Ford Sierra ). Another element is an ashtray , though this is now less common. On some cars and SUVs, the center console has heater vents for the comfort of rear passengers. This article about an automotive part or component is a stub . You can help Misplaced Pages by expanding it . Land Rover Freelander Too Many Requests If you report this error to

476-420: The driver's door, where it was not unknown for British cars to also have their handbrake . ( Left-hand drive models received a column shift.) In some modern sports cars , the gear lever has been replaced entirely by "paddles", which are a pair of levers, usually operating electrical switches (rather than a mechanical connection to the gearbox), mounted on either side of the steering column, where one increments

504-437: The floor. Some vehicles have a column shift where the lever is mounted on the steering column  – in vehicles with a manual four-speed gearbox such as 1950s Mercedes-Benz cars and all two-stroke Trabants , this is actually a manual gear lever connected to the gearbox with a linkage. In automatic transmission cars, the lever functions more like a gear selector, and, in modern cars, does not necessarily need to have

532-412: The gear selection system, i.e. the positions to which the gear stick should be moved when selecting a gear. In some older manual transmission vehicles, the knob may incorporate a switch to engage an overdrive ; in some automatic transmission vehicles it may incorporate a switch to engage a special mode such as a sports mode or to disengage overdrive. Both of the above-mentioned switches may also be found on

560-496: The gear stick. The Land Rover Freelander introduced a button for that company's Hill Descent Control system feature, which uses the brakes to simulate the function of a low-ratio gearbox in steep descents. Traditional four-wheel drive vehicles have one or more additional "shift levers" to engage a low-ratio gearbox (used on tough terrain ), a transfer case (which switches between two- and four-wheel drive), or differential locks. Some more modern traditional vehicles combine

588-411: The gearbox is in neutral. For the same reason, modern cars require the clutch pedal to be depressed before the starter will engage (though some modern vehicles have a button that disables the clutch start requirement if held down when starting, for rare situations when starting the car in gear is necessary). The latter practice is also useful in extremely cold conditions or with a weak battery, as it avoids

SECTION 20

#1732783440538

616-416: The gears up, and the other down. Formula 1 cars used to hide the gear stick behind the steering wheel within the nose bodywork before the modern practice of mounting the "paddles" on the (removable) steering wheel itself. A knob, variously called gear knob, shift knob, gear shift knob or stick shift knob, forms the handle for the gear stick. Typically the gear knob includes a diagram of the shift pattern of

644-425: The low-ratio gearbox and transfer case into one lever, with 3 positions: 2H (for 2-wheel drive in the standard high-ratio gearbox); 4H (for 4-wheel drive in the standard high-ratio gearbox); and 4L (for 4-wheel drive in the low-ratio gearbox). The shift pattern refers to the layout of the gears. In a typical manual transmission car, first gear is located to the left, and forwards. In many trucks and some sports cars it

672-408: The opposing legs of the "H" for both high range and low range ratios, for normal and off-road driving, respectively. Most modern manumatics , such as Alfa Romeo 's Sportronic and Porsche 's Tiptronic , have a traditional automatic shift pattern on the left or right side of the gear selector, along with a connected longitudinal gate with "+" and "-" positions on the other side in which movement of

700-454: The rear-most end of the console in front-wheel-drive vehicles without transmission tunnels. In some modern vehicles – particularly vans – the gear stick is mounted in the front, more vertical part of the center console to be within better reach of the driver without requiring a long stalk mounted on the steering column. Increasingly, center consoles include a wide variety of storage compartments and cupholders , some of them with

728-475: The shifter forward and backward increments the gears up and down, respectively. This can be useful in snow or dirt conditions, where it may be necessary to start from second gear. With the advent of drive by wire (or more properly, shift by wire ) computer-controlled transmissions (particularly in the case of automatics), the gear stick no longer needs to be mechanically connected to the transmission unit itself, and can, therefore, be made much smaller since there

756-489: The starter motor also having to turn over a gearbox full of cold and highly viscous oil. Many automatic transmission vehicles have extra controls on the gear stick, or very close by, which modify the choices made by the transmission system depending on engine and road speed, e.g. "sports" or "economy" modes which will broadly speaking allow, respectively, for higher and lower revolutions per minute, before shifting up. Some specialist vehicles have controls for other functions on

784-432: The transmission, with numbered positions in descending order marked below (or to the right) of "drive", which will prevent the transmission shifting to a gear higher than the selected, but maintaining automatic operation between all lesser numbered gears. Such gates will appear as P-R-N-D-3-2-1 for example. On some vehicles (mainly Japanese makes such as Honda , Toyota and Lexus ) these numbered positions are replaced by

#537462