A manual transmission ( MT ), also known as manual gearbox , standard transmission (in Canada , the United Kingdom and the United States ), or stick shift (in the United States), is a multi-speed motor vehicle transmission system where gear changes require the driver to manually select the gears by operating a gear stick and clutch (which is usually a foot pedal for cars or a hand lever for motorcycles).
90-494: The Chrysler Crossfire is a rear-wheel drive , two-seat sports car , marketed by Chrysler and manufactured by Karmann of Germany for the 2004 through 2008 model years . Developed during the period when Chrysler and Mercedes Benz had merged, known as Daimler Chrysler , the two-seater uses the Mercedes-Benz R170 platform and shares 80% of its components with the first generation SLK. The second generation SLK
180-414: A countershaft (also called a layshaft ) and an output shaft . The input shaft is connected to the engine and spins at engine speed whenever the clutch is engaged. The countershaft has gears of various sizes, which are permanently meshed with the corresponding gear on the input shaft. The gears on the output shaft are also permanently meshed with a corresponding gear on the countershaft; however,
270-533: A 3.2 L V6 engine with a manual transmission, rear-wheel-drive (RWD), a leather-wrapped and stitched steering wheel, a power-retractable cloth convertible roof (for convertible models), front floor mats, and air conditioning. Optional features included an automatic transmission, a six-speaker premium Infinity sound system with two "subwoofers" mounted directly behind each seat, a CD-based GPS navigational system, exterior paint colors, and additional interior color choices. The original contract with Karmann to build
360-492: A Mercedes-Benz M112 3.2 L, 18- valve , SOHC V6 engine that was rated by Chrysler at 215 hp (160 kW) and 229 pound force-feet (310 N⋅m) of torque . The SRT-6 models were equipped with a supercharged version of the M112 engine built by Mercedes' performance branch, AMG . The SRT-6 models came only with the 5-speed automatic transmission, consistent with AMG cars of the same era. The 6-speed transmission used by
450-708: A column shifter and more practical, as the gearbox was mounted in front of the engine. The linkage for the shifter could then be positioned on top of the engine. The disadvantage is that shifting is less comfortable and usually slower to operate. Newer small cars and MPVs , like the Suzuki MR Wagon , the Fiat Multipla , the Toyota Matrix , the Pontiac Vibe , the Chrysler RT platform cars,
540-417: A column shifter are the ability to switch between the two most commonly used gears—second and third—without letting go of the steering wheel, and the lack of interference with passenger seating space in vehicles equipped with a bench seat . Some smaller cars in the 1950s and 1960s, such as Citroën 2CV , Renault 4 and early Renault 5 feature a shifter in the dash panel. This was cheaper to manufacture than
630-527: A column-mounted manual shifter. Outside North America, the column-mounted shifter remained in production. All Toyota Crown and Nissan Cedric taxis in Hong Kong had the 4-speed column shift until 1999 when automatic transmissions were first offered. Since the late 1980s or early 1990s, a 5-speed column shifter has been offered in some vans sold in Asia and Europe, such as Toyota Hiace , Mitsubishi L400 and
720-407: A conventional manual transmission, but are shifted automatically. Alternatively, there are semi-automatic transmissions . These systems are based on the design of, and are technically similar to, a conventional manual transmission. They have a gear shifter which requires the driver's input to manually change gears, but the driver is not required to engage a clutch pedal before changing gear. Instead,
810-590: A front fascia air dam, and a fixed rear spoiler . The SRT-6 used the same drivetrain, suspension, and braking components as those used on the Mercedes-Benz SLK 32 AMG . The standard tires were upgraded to Z-rated Michelin Pilot Sports, sized 225/40R18 on the front and 255/35R19s in the back. The SRT-6 cars did not feature the electronic wing that the Base and Standard cars featured. For model year 2006,
900-411: A gear while the transmission requires the driver to adjust the throttle so that the transmission is not under load, and selecting a gear requires the engine RPM to be at the exact speed that matches the road speed for the gear being selected). Most motor vehicles use a pedal to operate the clutch; except for motorcycles, which usually have a clutch lever on the left handlebar . In most vehicles with
990-425: A gearshift without fully disengaging the clutch). Larger differences in speed between the input shaft and the gear require higher friction forces from the synchromesh components, potentially increasing their wear rate. Even in modern transmissions where all of the forward gears are in a constant-mesh configuration, often the reverse gear uses the older sliding-mesh ("crash box") configuration. This means that moving
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#17327733972871080-599: A lineup mostly or entirely made up of FR cars. Japanese mainstream marques such as Toyota were almost exclusively FR until the late 1970s and early 1980s. Toyota's first FF vehicle was the Toyota Tercel, with the Corolla and Celica later becoming FF while the Camry was designed as an FF from the beginning. The Supra, Cressida, Crown , and Century remained FR. Luxury division Lexus has a mostly FR lineup. Subaru's BRZ
1170-619: A manual transmission but have added components (such as computer -controlled actuators and sensors ) which automatically control the timing and speed of the gear shifts and clutch; this design is typically called an automated manual transmission (or sometimes a clutchless manual transmission ). Contemporary manual transmissions for cars typically use five or six forward gears ratios and one reverse gear, however, transmissions with between two and seven gears have been produced at times. Transmissions for trucks and other heavy equipment often have between eight and twenty-five gears, in order to keep
1260-438: A manual transmission, the flywheel is attached to the engine's crankshaft , therefore rotating at engine speed. A clutch disc sits between the flywheel and the transmission pressure plate which is attached to the transmission input shaft, controlling whether the transmission is connected to the engine or not. The clutch pedal controls the pressure plate ( clutch engaged – the clutch pedal is not being pressed) or not connected to
1350-421: A manual transmission, the driver selects gears by manipulating a lever called a gear stick (also called a gearshift , gear lever or shifter ). In most automobiles, the gear stick is located on the floor between the driver and front passenger, but some cars have a gear stick that is mounted to the steering column or center console. The movement of the gear stick is transferred (via solid linkages or cables) to
1440-400: A mechanism is needed to stop the input shaft, such as using the synchronizer rings for fifth gear. However, some vehicles do employ a synchromesh system for the reverse gear, thus preventing possible crunching if reverse gear is selected while the input shaft is still spinning. Most transmissions include a lockout mechanism to prevent reverse gear from being accidentally selected while the car
1530-441: A switch or pressing a button on the gearshift knob or on the steering column, or automatically by momentarily lifting the foot from the accelerator with the vehicle traveling above a certain road speed. Automatic overdrives were disengaged by flooring the accelerator, and a lockout control was provided to enable the driver to disable overdrive and operate the transmission as a normal (non-overdrive) transmission. The term 'overdrive'
1620-484: A synchromesh and teeth on each side in order to lock either gear to the shaft. Unlike some other types of clutches (such as the foot-operated clutch of a manual-transmission car), a dog clutch provides non-slip coupling and is not suited to intentional slipping. In order to provide smooth gearshifts without requiring the driver to manually match the engine revs for each gearshift, most modern passenger car transmissions use 'synchromesh' (also called 'synchronizer rings') on
1710-411: A three-speed manual transmission. This transmission, along with many similar designs that it inspired, was a non-synchronous (also called sliding-mesh ) design where gear changes involved sliding the gears along their shafts so that the desired cogs became meshed. The driver was therefore required to use careful timing and throttle manipulation when shifting, so the gears would be spinning at roughly
1800-646: A translation from concept to production as any in recent memory." The concept car was designed "to evoke a strong, passionate, emotional response. We had to retain that. We want to polarize our audience—we want people to love it or hate it." Conceived as a two-seat halo car for the Chrysler brand, the marketing objective was also to make use of available components using a two-seat roadster chassis. The production car shares about 39% of its parts with Mercedes-Benz vehicles and Chrysler dealers were required to invest in special equipment, tools, and parts to be able to market
1890-627: A transverse front-wheel drive or all-wheel drive layout. In Australia, FR cars remained popular throughout this period, with the Holden Commodore and Ford Falcon having consistently strong sales until their discontinuation in the late 2010s. In Europe, front-wheel drive was popularized by small cars like the Mini , Renault 5 and Volkswagen Golf and adopted for all mainstream cars. Upscale marques like Mercedes-Benz , BMW , and Jaguar remained mostly independent of this trend and retained
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#17327733972871980-439: A typical hydraulic automatic transmission , which uses an epicyclic (planetary) design, and a hydraulic torque converter . An automatic transmission that allows the driver to control the gear selection (such as shift paddles or "+/-" positions on the gear selector) is called a manumatic transmission, and is not considered a manual transmission. Some automatic transmissions are based on the mechanical build and internal design of
2070-429: Is also used to describe a gear with a ratio of less than one (e.g., if the top gear of the transmission has a ratio of 0.8:1). Vehicles with a manual transmission can often be push started when the starter motor is not operational, such as when the car has a dead battery or when the starter motor itself has malfunctioned and is unable to deliver sufficient rotational energy to turn the engine over. When push-starting,
2160-597: Is an FR car. The fact that a driveshaft is needed to transfer power to the rear wheels means a large centre tunnel between the rear seats; therefore, cars such as the Mazda RX8 and the Porsche Panamera forgo a centre rear seat and divide both seats by a centre tunnel. In the 21st century, most cars are FF, including all front-engined economy cars, though FR cars are making a return as an alternative to large sport-utility vehicles. In North America, GM returned to
2250-427: Is connected via a pinion gear at the end of the counter/output shaft. In a modern constant-mesh manual transmission, the gear teeth are permanently in contact with each other, and dog clutches (sometimes called dog teeth ) are used to select the gear ratio for the transmission. When the dog clutches for all gears are disengaged (i.e. when the transmission is in neutral), all of the gears are able to spin freely around
2340-445: Is moving forwards. This can take the form of a collar underneath the gear knob which needs to be lifted or requiring extra force to push the gearshift lever into the plane of reverse gear. Another design of transmission that is used in older cars , trucks , and tractors , is a non-synchronous transmission (also known as a crash gearbox). Non-synchronous transmissions use a sliding-mesh (or constant-mesh, in later years) design and have
2430-404: Is used to reverse the direction in which the output shaft rotates. In many transmissions, the input and output shafts can be directly locked together (bypassing the countershaft) to create a 1:1 gear ratio which is referred to as direct-drive . In a transmission for longitudinal engined vehicles (e.g. most rear-wheel-drive cars), it is common for the input shaft and output shaft to be located on
2520-677: The 300 and Charger on a FR platform. They also maintain FR layout on the now unibody Grand Cherokee and Durango . Hyundai and Kia have also been working with new FR-based vehicles in the US, the Genesis Coupe and Sedan, the Equus and the new Kia Quoris . Ford, on the other hand, seems to be moving away from FR-based vehicles with the discontinuation of the Panther Platform in 2011 and
2610-663: The Corvette , Firebird and Camaro . Ford's Mustang has stayed rear-wheel drive, as it must maintain a sporty presence, as were Ford's full-size cars based on the Ford Panther platform (the Ford Crown Victoria , Mercury Grand Marquis , and Lincoln Town Car ) until they were discontinued in 2011 in favour of the Ford Taurus, which Ford discontinued production in 2019, being formally available with either
2700-674: The Honda Element , the Honda Civic , the Daihatsu Sigra , and the Honda Avancier , may feature a manual or automatic transmission gear shifter located on the vehicle's instrument panel, similar to the mid-1950s Chryslers and Powerglide Corvairs . Console-mounted shifters are similar to floor-mounted gear shifters in that most of the ones used in modern vehicles operate on a horizontal plane and can be mounted to
2790-482: The R170 platform . Front suspension is unequal length (SLA) double wishbone suspension with 5 point multi-link in the rear. As with the concept car, all Crossfire models used with two different wheel sizes measuring 18x7.5-inch on the front and 19x9-inch on the rear. Standard all-season tires were 225/40R18 on the front and 255/35R19 on the rear. The first production Crossfire was assembled on 3 February 2003, and driven off
Chrysler Crossfire - Misplaced Pages Continue
2880-538: The R170 platform . The seats from the Mercedes-Benz SLK320 would bolt directly into the Crossfire chassis. The dashboard layout, controls, and instruments are also similar to those on the Mercedes-Benz SLK320. The standard transmission is a 6-speed manual with an optional 5-speed automatic . Base (standard) and Limited models, originally offered beginning in the 2004 model year, were equipped with
2970-427: The splines on the shaft, forcing that shaft to rotate at the same speed as the gear hub. However, the clutch can move back and forth on the shaft, to either engage or disengage the splines. This movement is controlled by a selector fork that is linked to the gear lever. The fork does not rotate, so it is attached to a collar bearing on the selector. The selector is typically symmetric: it slides between two gears and has
3060-415: The stereo system or HVAC system , to help prevent accidental activation or driver confusion. More and more small cars and vans from manufacturers such as Suzuki , Honda , and Volkswagen are featuring console shifters in that they free up space on the floor for other features such as storage compartments without requiring that the gear shift be mounted on the steering column. Also, the basic location of
3150-471: The 1948 Ferrari 166 Inter and the 1953 Alfa Romeo 1900 Super Sprint . Five-speed transmissions became widespread during the 1980s, as did the use of synchromesh on all forward gears. Six-speed manual transmissions started to emerge in high-performance vehicles in the early 1990s, such as the 1990 BMW 850i and the 1992 Ferrari 456 . The first 6-speed manual transmission was introduced in the 1967 Alfa Romeo 33 Stradale . The first 7-speed manual transmission
3240-518: The 1950s, constant-mesh manual transmissions have become increasingly commonplace, and the number of forward ratios has increased to 5-speed and 6-speed manual transmissions for current vehicles. The alternative to a manual transmission is an automatic transmission . Common types of automatic transmissions are the hydraulic automatic transmission (AT) and the continuously variable transmission (CVT). The automated manual transmission (AMT) and dual-clutch transmission (DCT) are internally similar to
3330-626: The 1970s. After the Arab oil embargo of 1973 and the 1979 fuel crises , a majority of American FR vehicles (station wagons and luxury sedans) were phased out for the front-engine, front-wheel drive (FF) layout – this trend would spawn the SUV-van conversion market. Throughout the 1980s and 1990s, most American companies set as a priority the eventual removal of rear-wheel drive from their mainstream and luxury lineup. Chrysler went 100% FF by 1990 and GM 's American production went entirely FF by 1997 except
3420-542: The Australasia-only Falcon in 2016. Excluding trucks, vans, and SUVs, the Mustang is the only FR vehicle remaining in their lineup. With the increasing popularity of electric vehicles , RWD layouts have become more common again, as the packaging advantages of FWD layouts do not apply to these vehicles, whereas the generally more powerful drivetrains benefit from the better traction during acceleration of
3510-547: The Chrysler Crossfire is a variant of the Mercedes sourced NSG-370 . The 5-speed automatic transmission in the Crossfire (known as 5G-Tronic ) is also Mercedes-sourced and a variant of the 722.6 family. The automatic transmission-equipped Crossfires achieve a better EPA fuel efficiency rating over the 6MT, mostly due to the difference in gear ratios. The Crossfire uses the recirculating ball steering system from
3600-515: The Crossfire was for about five years with an annual sales target of 20,000 units in the United States. Sales of the Crossfire were slow, with an average 230-day supply of the vehicles during November 2005. A small number of Crossfires were imported to the United States and Mexico in 2006 (and almost all of these were roadsters). Chrysler discontinued the Crossfire after the 2008 model year, as part of its restructuring plans. The last Crossfire
3690-528: The RWD layout. Modern electronic stability control largely negate the potentially more difficult handling during challenging circumstances. Some examples of electric models utilizing a RWD layout are the single motor variants of the Tesla Model 3 , Volkswagen ID.4 and Kia EV6 . Manual transmission Early automobiles used sliding-mesh manual transmissions with up to three forward gear ratios. Since
Chrysler Crossfire - Misplaced Pages Continue
3780-478: The SRT-6 was special order only. NHTSA crash test ratings (2004 and 2007, Coupe): Rear-wheel drive Rear-wheel drive ( RWD ) is a form of engine and transmission layout used in motor vehicles, in which the engine drives the rear wheels only. Until the late 20th century, rear-wheel drive was the most common configuration for cars. Most rear-wheel drive vehicles feature a longitudinally-mounted engine at
3870-533: The U.S. and Canada had a 3-speed column-mounted shifter—the first generation Chevrolet/GMC vans of 1964–70 vintage had an ultra-rare 4-speed column shifter. The column-mounted manual shifter disappeared in North America by the mid-1980s, last appearing in the 1987 Chevrolet pickup truck . Prior to 1980, the GM X platform compacts (Chevrolet Nova and its rebadged corporate clones) were the final passenger cars to have
3960-402: The body sides, prominently crossing below the mirrors on the door panels. Conceived during the period of Daimler Chrysler, the name also refers to the collaboration of the two companies. The Chrysler Crossfire concept car was introduced at the 2001 North American International Auto Show and the production version was unveiled at the 2002 Los Angeles Auto Show as a 2004 model "is as faithful
4050-402: The car and the transmission at the rear of the car, in order to provide a more balanced weight distribution. This configuration is often referred to as a transaxle since the transmission and axle are one unit. Many of the cars built in the 19th century were rear-wheel drive, often with the engine mounted at the rear of the car. The first rear-wheel drive car with the engine mounted at the front
4140-411: The clutch) or both of these functions are automated ). Most manual transmissions for cars allow the driver to select any gear ratio at any time, for example shifting from second to fourth gear, or fifth to third gear. However, sequential manual transmissions , which are commonly used in motorcycles and racing cars , only allow the driver to select the next-higher or next-lower gear. In a vehicle with
4230-484: The collar from bridging the locking rings while the speeds are still being synchronized. This is achieved through 'blocker rings' (also called 'baulk rings'). The synchro ring rotates slightly because of the frictional torque from the cone clutch. In this position, the dog clutch is prevented from engaging. Once the speeds are synchronized, friction on the blocker ring is relieved and the blocker ring twists slightly, bringing into alignment certain grooves or notches that allow
4320-463: The cone-shaped sleeve on the dog collar so that the friction forces can reduce the difference in rotational speeds. Once these speeds are equalized, the dog clutch can engage, and thus the new gear is now in use. In a modern gearbox, the action of all of these components is so smooth and fast it is hardly noticed. Many transmissions do not include synchromesh on the reverse gear (see Reverse gear section below). The synchromesh system must also prevent
4410-438: The dog clutch to fall into the engagement. Common metals for synchronizer rings are brass and steel , and are produced either by forging or sheet metal shaping. The latter involves stamping the piece out of a sheet metal strip and then machining to obtain the exact shape required. The rings are sometimes coated with anti-wear linings (also called 'friction linings') made from molybdenum , iron , bronze or carbon (with
4500-427: The dog clutches require the input shaft speed to match that of the gear being selected; otherwise, the dog teeth will fail to engage and a loud grinding sound will be heard as they clatter together. Therefore, to speed up or slow down the input shaft as required, cone-shaped brass synchronizer rings are attached to each gear. When the driver moves the gearshift lever towards the next gear, these synchronizer rings press on
4590-413: The early 1950s, most cars only had synchromesh for the shift from third gear to second gear (drivers' manuals in vehicles suggested that if the driver needed to shift from second to first, it was best to come to a complete stop beforehand). Up until the late 1970s, most transmissions had three or four forward gear ratios, although five-speed manual transmissions were occasionally used in sports cars such as
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#17327733972874680-407: The energy generated by the wheels moving on the road is transferred to the driveshaft, then the transmission, and eventually the crankshaft. When the crankshaft spins as a result of the energy generated by the rolling of the vehicle, the motor is cranked over. This simulates what the starter is intended for and operates in a similar way to crank handles on very old cars from the early 20th century, with
4770-435: The engine ( clutch disengaged – the clutch pedal is being pressed down). When the engine is running and the clutch is engaged (i.e., clutch pedal up), the flywheel spins the clutch pressure plate and hence the transmission. The design of most manual transmissions for cars is that gear ratios are selected by locking selected gear pairs to the output shaft inside the transmission. This is a fundamental difference compared with
4860-456: The engine speed within the optimal power band for all typical road speeds. Operating such transmissions often uses the same pattern of shifter movement with a single or multiple switches to engage the next sequence of gears. Many of the first automobiles were rear-engined, with a simple belt-drive functioning as a single-speed transmission. The 1891 Panhard et Levassor is considered a significant advance in automotive transmissions since it used
4950-399: The fifth selector on the main shaft. This means that when the vehicle is stopped and idling in neutral with the clutch engaged and the input shaft spinning, the third-, fourth-, and fifth-gear pairs do not rotate. When neutral is selected, none of the gears on the output shaft are locked to the shaft, allowing the input and output shafts to rotate independently. For reverse gear, an idler gear
5040-526: The first-gen Fiat Ducato . Many European cars had manual column shifts and the Renault 16TX had a 5 speed. Column shifters are mechanically similar to floor shifters, although shifting occurs in a vertical plane instead of a horizontal one. Because the shifter is further away from the transmission, and the movements at the shifter and at the transmission are in different planes, column shifters require more complicated linkage than floor shifters. Advantages of
5130-442: The forces required or provide a faster shift time . The first car to use a manual transmission with synchromesh was the 1929 Cadillac . Most North American marques had adopted synchronized manual transmissions, usually for second and high gears, by the mid-1930s. In 1947, Porsche patented the split ring synchromesh system. The 1952 Porsche 356 was the first car to use a transmission with synchromesh on all forward gears. In
5220-401: The forward gears. These devices automatically match the speed of the input shaft with that of the gear being selected, thus removing the need for the driver to use techniques such as double-clutching . The synchromesh transmission was invented in 1919 by Earl Avery Thompson and first used on production cars by Cadillac in 1928. The need for synchromesh in a constant-mesh transmission is that
5310-500: The front fascia, and fabric seats with separate, movable headrests. Limited and SRT-6 models, both Coupe and Roadster, all featured silver-painted windshield frames and are equipped with fog lights. The Limited trim level featured leather upholstery. The SRT-6 model offered leather/Alcantara upholstery. All Base and Limited Crossfire models included an electronic rear wing that would automatically deploy at about 65 mph and descend at 45 mph. A manual override switch raised or lowered
5400-408: The front of the car. The most common layout for a rear-wheel drive car is with the engine and transmission at the front of the car, mounted longitudinally. Other layouts of rear-wheel drive cars include front-mid engine, rear-mid engine, and rear-engine. Some manufacturers, such as Alfa Romeo, Lancia, Porsche (944, 924, 928) and Chevrolet (C5, C6, and C7 Corvettes), place the engine at the front of
5490-418: The front-wheel-drive transaxle's ring gear. This allows for a narrower transmission since the length of each countershaft is halved compared with one that contains four gears and two shifters. The fixed and free gears can be mounted on either the input or output shaft or both. For example, a five-speed transmission might have the first-to-second selectors on the countershaft, but the third-to-fourth selector and
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#17327733972875580-437: The gear shift in comparison to the column shifter makes console shifters easier to operate than column shifters. In the 1950s, 1960s, and 1970s, fuel-efficient highway cruising with low engine speed was in some cases enabled on vehicles equipped with 3- or 4-speed transmissions by means of a separate overdrive unit in or behind the rear housing of the transmission. This was actuated either manually while in high gear by throwing
5670-410: The gearshift lever into reverse results in gears moving to mesh together. Another unique aspect of the reverse gear is that it consists of two gears—an idler gear on the countershaft and another gear on the output shaft—and both of these are directly fixed to the shaft (i.e. they are always rotating at the same speed as the shaft). These gears are usually spur gears with straight-cut teeth which—unlike
5760-410: The helical teeth used for forward gear—results in a whining sound as the vehicle moves in reverse. When reverse gear is selected, the idler gear is physically moved to mesh with the corresponding gears on the input and output shafts. To avoid grinding as the gears begin to the mesh, they need to be stationary. Since the input shaft is often still spinning due to momentum (even after the car has stopped),
5850-645: The late 1930s and became common during the 1940s and 1950s. If a U.S. vehicle was equipped with overdrive , it was very likely to be a Borg-Warner type, operated by briefly backing off the accelerator pedal when above 28 mph (45 km/h) to enable, and momentarily flooring the same pedal to return to normal gear. The control simply disables overdrive for such situations as parking on a hill or preventing unwanted shifting into overdrive. [REDACTED] Later, European and Japanese models began to have 4-speed column shifters with this shift pattern: [REDACTED] A majority of North American-spec vehicles sold in
5940-539: The late 1950s to mid-1960s with the Chrysler 300 letter series coupes and convertibles. Chrysler executed the interior and exterior styling. All other elements of the car such as wheelbase , track, engine , transmission , chassis structure, suspension components, are shared with the R170 platform . For example, the engine bay of the Crossfire is virtually identical to the Mercedes-Benz SLK320 on
6030-399: The latter usually reserved for high-performance transmissions due to their high cost). Mechanical wear of the synchronizer rings and sleeves can cause the synchromesh system to become ineffective over time. These rings and sleeves have to overcome the momentum of the entire input shaft and clutch disk during each gearshift (and also the momentum and power of the engine, if the driver attempts
6120-459: The mechanical linkage for the clutch pedal is replaced by an actuator , servo , or solenoid and sensors , which operate the clutch system automatically when the driver touches or moves the gearshift . This removes the need for a physical clutch pedal. A manual transmission requires the driver to operate the gear stick and clutch in order to change gears (unlike an automatic transmission or semi-automatic transmission , where one (typically
6210-447: The most appropriate speed for the wheels. As power is the product of torque and angular velocity, spinning the shaft faster for any given power reduces the torque and allows a lighter shaft construction. In an era when petrol was cheap and cars were heavy, the mechanical advantages of the front-engine, rear-wheel-drive (FR) drivetrain layout made up for any disadvantage in weight terms. It remained almost universal among car designs until
6300-423: The new luxury model. The rear-wheel-drive Crossfire coupe styling objective was for a "unique, almost sculptural" design. The Crossfire 's styling includes a wide stance with 19-inch rear wheels and 18-inch front wheels. Automotive journalists compared the Crossfire to American Motors ' 1965–1967 AMC Marlin . Noted journalist, Paul Leinert said the "distinctive boat-tail rear end reminds more than one observer of
6390-462: The nickname "crash" because the difficulty in changing gears can lead to gear shifts accompanied by crashing/crunching noises. Vehicles with manual transmissions use a clutch to manage the linkage between the engine and the transmission, and decouple the transmission from the engine during gearshifts and when the vehicle is stationary. Without a clutch, the engine would stall any time the vehicle stopped, and changing gears would be difficult (deselecting
6480-526: The old Rambler Marlin." For example, Rob Rothwell wrote "... when I first espied the rear lines of the Chrysler Crossfire I was instantly transported back to 1965 and my favorite car of that year, the Rambler Marlin." Motor Trend also compared the "provocative boattail theme" of the 2004 Crossfire's sheetmetal to that of the AMC Marlin fastback. The Crossfire's tail is "formed as the edges of
6570-406: The other shaft, with a bearing located between the two shafts. In a transmission for transverse engined vehicles (e.g., front-wheel-drive cars), there are usually only two shafts: input and countershaft (sometimes called input and output). The input shaft runs the whole length of the gearbox, and there is no separate input pinion. These transmissions also have an integral differential unit, which
6660-489: The output shaft gears are able to rotate independently of the output shaft itself (through the use of bearings located between the gears and the shaft). Through the use of collars (operated using the shift rods ), the speed of the output shaft becomes temporarily locked to the speed of the selected gear. Some transmission designs—such as in the Volvo 850 and S70—have two countershafts, both driving an output pinion meshing with
6750-424: The output shaft. When the driver selects a gear, the dog clutch for that gear is engaged (via the gear selector rods), locking the transmission's output shaft to a particular gear set. This means the output shaft rotates at the same speed as the selected gear, thus determining the gear ratio of the transmission. The dog clutch is a sliding selector mechanism that sits around the output shaft. It has teeth to fit into
6840-485: The production line by Chrysler Group's COO Wolfgang Bernhard in Germany. The Chrysler Crossfire's standard features included large alloy wheels with performance-rated tires, a Becker –sourced AM/FM stereo with anti-theft system and a single-disc CD player, keyless entry with security alarm, a power-retractable rear wing spoiler, leather-trimmed seating surfaces, dual power front sports bucket seats, full instrumentation,
6930-774: The production of FR-based luxury vehicles with the 2003 Cadillac CTS . As of 2012, all but the SRX and XTS are FR-based vehicles. Chevrolet reintroduced the FR-based Camaro in 2009, and the Caprice PPV in 2011. Pontiac also had a short run with the FR-based G8 and Pontiac Solstice . A Chevrolet replacement for the G8 called the Chevrolet SS was released in 2013 and uses the FR layout. Chrysler and Dodge reintroduced
7020-565: The roof converge into a kind of teardrop shape, leaving the rear fenders to flare out over the rear wheels." Chrysler said the Crossfire took inspiration from the 1930s art deco period and buildings such as the Chrysler Building . Motor Trend cites vehicle influences from 1930s including Bugattis and the Talbot Lago . Chrysler wanted to once again offer a performance coupe reminiscent of the luxury reputation they enjoyed during
7110-401: The same axis, since this reduces the torsional forces to which the transmission casing must withstand. The assembly consisting of both the input and output shafts is referred to as the main shaft (although sometimes this term refers to just the input shaft or output shaft). Independent rotation of the input and output shafts is made possible by one shaft being located inside the hollow bore of
7200-441: The same speed when engaged; otherwise, the teeth would refuse to mesh. This was difficult to achieve, so gear changes were often accompanied by grinding or crunching sounds, resulting in the gearboxes being nicknamed "crash boxes". Even after passenger cars had switched to synchronous transmissions (i.e. with synchronizers), many transmissions for heavy trucks, motorcycles and racing cars remained non-synchronous, in order to withstand
7290-422: The selector forks within the transmission. Motorcycles typically employ sequential manual transmissions , although the shift pattern is modified slightly for safety reasons. Gear selection is usually via the left-foot (or, on older motorcycles; right-foot) shift lever with a layout of 1–N–2–3–4–5–6. During the period when U.S. vehicles usually had only three forward speeds, the most common gear-shifter location
7380-571: The spoiler at any speed. For model years 2006-2007, an SE Roadster model (essentially a base model) was offered in Blaze Red Crystal Pearl and with black accented 15-spoke SRT-6 style wheels. The SRT-6 trim level, available as a coupe and convertible , featured a Mercedes-Benz AMG M112 3.2 L V6 supercharged engine delivering 330 hp (246 kW) and 310 lb⋅ft (420 N⋅m) of torque. Other SRT-6 model-specific features included suspension and brake modifications,
7470-431: The transaxle of lighter combined weight), but has the disadvantage of concentrating all the weight in one location. In order to reduce the relative weight of the drive shaft, the transmission was normally split into two parts: the gearbox and the final drive. The gearbox was normally produced with its highest gear being 1:1, which offers some mechanical advantages. The final drive, in the rear axle, would then reduce this to
7560-484: The transmission. FF (front-engined, front-wheel drive) vehicles, RR (rear-engined, rear-wheel drive) vehicles and front-engined vehicles with rear-mounted gearboxes often require a mechanical linkage to connect the shifter to the transmission. Some vehicles have a gear lever mounted on the steering column. A 3-speed column shifter, which came to be popularly known as a "three on the tree", began appearing in America in
7650-467: The vehicle's transmission in much the same way a floor-mounted shifter can. However, because of the location of the gear shifter in comparison to the locations of the column shifter and the floor shifter, as well as the positioning of the shifter to the rest of the controls on the panel often require that the gearshift be mounted in a space that does not feature a lot of controls integral to the vehicle's operation, or frequently used controls, such as those for
7740-408: Was an 1895 Panhard model, so this layout was known as the "Système Panhard" in the early years. The layout has the advantage of minimizing mechanical complexity, as it allows the transmission to be placed in-line with the engine output shaft, spreading weight under the vehicle. In comparison, a vehicle with the engine over the driven wheels eliminates the need for the drive shaft (replacing this with
7830-558: Was assembled on December 17, 2007. 70 – 0 mph in 161 ft. 6.4 sec (6-speed manual) 70 – 0 mph in 157 ft. For model year 2004, only the coupe was offered in a single trim level, equipped similarly to the following year's Limited model. For model year 2005 model year; Coupe and Roadster configurations were available, each with three ascending trim levels: Base, Limited, and SRT-6 (supercharged). Base Crossfires, Coupe or Roadster, featured matte black painted windshield frames, black filler plugs (in place of fog lights) in
7920-507: Was built on the R171 platform with model year 2005; the R170 platform was essentially handed down to Chrysler for the Crossfire. Having initially arrived in 2001 as a concept car styled by Eric Stoddard , the Chrysler was further refined by Andrew Dyson before production began in 2003 for 2004 model year sales. The name "Crossfire" refers to two character lines that run from front to rear along
8010-466: Was introduced in the 2012 Porsche 911 (991) . In 2008, 75.2% of vehicles produced in Western Europe were equipped with manual transmission, versus 16.1% with automatic and 8.7% with other. A manual transmission has several shafts with various gears and other components attached to them. Most modern passenger cars use 'constant-mesh' transmissions consisting of three shafts: an input shaft ,
8100-461: Was on the steering column, a layout that was sometimes called "three on the tree". By contrast, high-performance cars, and European vehicles in general, mostly used a four-speed transmission with floor-mounted shifters. That layout was referred to as "four on the floor". Most FR (front-engined, rear-wheel drive) vehicles have a transmission that sits between the driver and the front passenger seat. Floor-mounted shifters are often connected directly to
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