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93-408: When the differential is unlocked (open differential), it allows each wheel to rotate at different speeds (such as when negotiating a turn), thus avoiding tire scuffing. An open (or unlocked) differential always provides the same torque (rotational force) to each of the two wheels on that axle. Therefore, although the wheels can rotate at different speeds, they apply the same rotational force, even if one

186-569: A Toyota JZ-GTE or Nissan CA18DET/ SR20DET / RB26DETT respectively). In the UK, there are a high level of Japanese imports used within the drifting scene, due in part to the UK sharing a right-hand drive layout with Japan. However, these cars often cost more than UK-market cars, partly due to import costs. There are plenty of UK and European models used as drift cars as well — older BMWs are particularly prominent due to cost and availability, with Volvo 300 series and Ford Sierras also proving popular. In

279-517: A handbrake turn . This sense of drift is not to be confused with the four wheel drift , a classic cornering technique established in Grand Prix and sports car racing. As a motoring discipline, drifting competitions were first popularized in Japan in the 1970s and further popularized by the 1995 manga series Initial D . Drifting competitions are held worldwide and are judged according to

372-410: A racing seat and five-point harness . This allows the hands to merely turn the wheel, instead of bracing the body in the seat. The same applies for the feet, which are free to move rapidly between clutch, brake and accelerator pedals . The steering wheel is usually relatively small, dished, and perfectly round, so that it can be released and allowed to spin in the driver's hands as the caster returns

465-568: A ring gear is driven by a pinion gear connected to the transmission. The functions of this design are to change the axis of rotation by 90 degrees (from the propshaft to the half-shafts) and provide a reduction in the gear ratio . The components of the ring-and-pinion differential shown in the schematic diagram on the right are: 1. Output shafts ( axles ) 2. Drive gear 3. Output gears 4. Planetary gears 5. Carrier 6. Input gear 7. Input shaft ( driveshaft ) An epicyclic differential uses epicyclic gearing to send certain proportions of torque to

558-461: A centralised location. Differential carrier A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others. A common use of differentials is in motor vehicles , to allow the wheels at each end of a drive axle to rotate at different speeds while cornering. Other uses include clocks and analogue computers . Differentials can also provide

651-452: A clicking or banging noise when locking and unlocking as the vehicle negotiates turns. This is annoying to many drivers. Automatic locking differentials also affect the ability of a vehicle to steer, particularly if a locker is located in the front axle. Aside from tire scuffing while turning any degree on high friction (low slip) surfaces, locked axles cause understeer and, if used on the front axle, will increase steering forces required to turn

744-401: A common shaft. This forces both wheels to turn in unison, regardless of the traction (or lack thereof) available to either wheel individually. When this function is not required, the differential can be "unlocked" to function as a regular open differential. Locking differentials are mostly used on off-road vehicles, to overcome low-grip and variable grip surfaces. An undesirable side-effect of

837-488: A compromise between a standard differential and a locking differential because they operate more smoothly, and they do direct some extra torque to the wheel with the most traction compared to a standard differential, but are not capable of 100% lockup. Traction control systems are also used in many modern vehicles, either in addition to, or as a replacement of, locking differentials. Examples include: Volkswagen 's electronic differential lock (EDL), Opel 's TC+ installed for

930-429: A differential bar instead of gears to perform the same function. Drifting (motorsport) Drifting is a driving technique where the driver intentionally oversteers , with loss of traction, while maintaining control and driving the car through the entirety of a corner or a turn. The technique causes the rear slip angle to exceed the front slip angle to such an extent that often the front wheels are pointing in

1023-418: A differential, which allows the two wheels to rotate at different speeds. The purpose of a differential is to transfer the engine's power to the wheels while still allowing the wheels to rotate at different speeds when required. An illustration of the operating principle for a ring-and-pinion differential is shown below. A relatively simple design of differential is used in rear-wheel drive vehicles, whereby

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1116-400: A gear ratio between the input and output shafts (called the "axle ratio" or "diff ratio"). For example, many differentials in motor vehicles provide a gearing reduction by having fewer teeth on the pinion than the ring gear . Milestones in the design or use of differentials include: During cornering, the outer wheels of a vehicle must travel further than the inner wheels (since they are on

1209-405: A larger radius). This is easily accommodated when the wheels are not connected , however it becomes more difficult for the drive wheels , since both wheels are connected to the engine (usually via a transmission). Some vehicles (for example go-karts and trams ) use axles without a differential, thus relying on wheel slip when cornering. However, for improved cornering abilities, many vehicles use

1302-548: A legion of fans who enjoyed the spectacle of smoking tires. The bias-ply racing tires of the 1960s–1980s lent themselves to driving styles with a high slip angle. As professional racers in Japan drove this way, so did street racers. Keiichi Tsuchiya , known as the "Drift King" ( ドリフトキング , Dorifuto Kingu ) , became particularly interested in Takahashi's drift techniques. Tsuchiya began practicing his drifting skills on

1395-430: A more customized look. R/C drifting refers to the act of drifting with a radio-controlled car . R/C cars are equipped with special low-grip tires, usually made from PVC or ABS piping. Some manufacturers make radial drift tires that are made of actual rubber compounds. The car's setup is usually changed to allow it to drift more easily. R/C drifting is most successful on AWD R/C cars. However, RWD chassis drift cars offer

1488-412: A pointer which constantly pointed to the south, no matter how the chariot turned as it travelled. It could therefore be used as a type of compass . It is widely thought that a differential mechanism responded to any difference between the speeds of rotation of the two wheels of the chariot, and turned the pointer appropriately. However, the mechanism was not precise enough, and, after a few miles of travel,

1581-488: A popular choice for many due to the simulator featuring true to life physics that can translate to real world driving and the ever expanding variety of Championships it offers. Some of the most notable include the Virtual Drift Championship, The Drift Corner Grand Prix, and more recently the eSports Drifting Championship. Some championships have also been created by real world event organizers such as

1674-447: A qualifying or practice session, and a final session. In qualifying sessions, referred to as "solo runs" ( 単走 , tansō ) , drifters get individual passes in front of judges (who may or may not be the final judges) to try to make the final 16. This is often on the day preceding the final. The finals are tandem passes called "chases" ( 追走 , tsuisō ) . Drivers are paired off, and each heat comprises two passes, with each driver taking

1767-593: A recurring theme. Browser-based games include the popular Drift Hunters , NZ Performance Car 's Drift Legends (the first online game to feature real racetracks, and now ported to iPhone/iPod touch ) and Mercedes-AMG ’s Wintersport Drift Competition (the first manufacturer-backed drifting game). Drifting games for mobile devices are readily available from major developers and independent studios. High Performance Imports. Volume 10 features Australian journalists from express publications, and Australian professional drifter Darren Appleton traveling to Japan, purchasing

1860-494: A regular ("open") differential is that it can send most of the power to the wheel with the lesser traction (grip). In situation when one wheel has reduced grip (e.g. due to cornering forces or a low-grip surface under one wheel), an open differential can cause wheelspin in the tyre with less grip, while the tyre with more grip receives very little power to propel the vehicle forward. In order to avoid this situation, various designs of limited-slip differentials are used to limit

1953-447: A significant traction advantage over an open differential, but only when the traction under each wheel differs significantly. All of the above applies to central differentials as well as to those in each axle: full-time four-wheel-drive vehicles have three differentials, one in each axle, and a central one (called a "transfer case") between the front and rear axles. Automatic lockers lock and unlock automatically with no direct input from

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2046-404: A spool will bark tires in turns and may become unmanageable in wet or snowy weather. Spools are usually reserved for competition vehicles not driven on the street. Mini-spool uses the stock carrier and replaces only the internal components of the differential, similar in installation to the lunchbox locker. A full spool replaces the entire carrier assembly with a single machined piece. A full spool

2139-505: A straight line. Welded differentials have an inherent risk involved: due to the tremendous amount of internal stress, the welds may fail and the differential completely lock up leaving the rear wheels immobilized. Helical torque-sensing differentials such as the Torsen or Quaife (available on cars in certain stock trims such as the S15 , FD3S , MX-5 , JZA80 , and UZZ3x ) are also adequate. It

2232-404: A turn to lead. The best of the eight heats go to the next four, to the next two, to the final. The passes are judged as explained above; however, there are some provisos such as: Points are awarded for each pass, and usually, one driver prevails. Sometimes, the judges cannot agree, or cannot decide, or a crowd vocally disagrees with the judge's decision. In such cases, more passes may be run until

2325-454: A type of mechanical analogue computer, were used from approximately 1900 to 1950. These devices used differential gear trains to perform addition and subtraction. The Mars rovers Spirit and Opportunity (both launched in 2004) used differential gears in their rocker-bogie suspensions to keep the rover body balanced as the wheels on the left and right move up and down over uneven terrain. The Curiosity and Perseverance rovers used

2418-544: A very objective result for the qualifying sessions. Drift cars are usually light- to moderate-weight rear-wheel-drive coupes and sedans, offering a large range of power levels. There have also been all-wheel drive cars that have been converted to rear-wheel drive such as the Subaru WRX , Toyota Avensis , Scion tC , Mitsubishi Lancer Evolution , Dodge Charger , and Nissan GT-R . Early on, AWD cars without conversion were allowed in some drifting competitions, and usually

2511-422: A winner is produced. On occasion, mechanical failure determines the battle's outcome, either during or preceding a heat. If a car cannot enter a tandem battle, the remaining entrant (who automatically advances) will give a solo demonstration pass. In the event of apparently close or tied runs, crowds often demonstrate their desire for another run with chants of 'one more time'. Commitment is about how much throttle

2604-564: Is a reality competition show that focuses heavily on drifting, won by Diego Higa of Brazil. Drifting's popularity in computer games extends back to early arcade racers where techniques for games such as Sega Rally and Ridge Racer involved drifting. The technique is now considered mainstream in modern games in all their forms. In-game communities have developed within games such as Assetto Corsa , BeamNG.drive , Forza Motorsport and Gran Turismo , made up of teams who battle in user-created tournaments. Assetto Corsa has become

2697-479: Is based on how early and smooth the driver initiates into a drift. Fluidity is how smooth the driver drives from lock to lock, high angles of drift, and just overall smoothness on the track. Commitment is judged on consistent throttle throughout, and how close the driver is willing to get to walls and clipping points. The King of Europe Drift ProSeries has developed its own telemetry system, which uses GPS data to accurately measure speed, angle and line, thus leading to

2790-413: Is common for drifters to change the final gear ratio depending on the type of track layout. The clutches on drift cars tend to be very tough ceramic-brass button or multiple-plate varieties for durability, as well as to allow rapid "clutch kick" techniques to upset the grip of the rear wheels. Gearbox and engine mounts are often replaced with urethane or aluminum mounts, and dampers are added to control

2883-542: Is created accurately. Championships often scrutinize car data closely and are constantly aiming to more accurately depict the features of a virtual cars real life counterpart. Because of this, drivers are beginning to use Assetto Corsa as a tool to practice for real world championships. BeamNG.drive is rising in popularity in the drifting world, through YouTube Shorts content creators and in-game updates. BeamNG.drive has multiple in-game drifting vehicle configurations, from drift missiles to competition vehicles. BeamNG.drive

Locking differential - Misplaced Pages Continue

2976-459: Is done by many people to help with angle. Having more angle allows for more countersteer which prevents you from spinning out. There are angle kits are what is needed to complete this mod. Modifying the steering knuckles are a common way to achieve wider steering and sometimes putting a spacer between the inner tire rod joint and steering rack is done. Because of the high centrifugal forces encountered during drifting, drivers are usually retained by

3069-729: Is downloaded through third-party software and can be used for tandem drifting, drifting competitions and more. Drifting also features heavily in the Need for Speed franchise (notably games since Need for Speed: Underground ), the Grid franchise, the Juiced franchise and in Japanese domestic console games such as Initial D: Extreme Stage ( PS3 ), which is based solely on drifting. It has become mainstream enough that there are also indie games about drifting such as Absolute Drift . Drifting and

3162-575: Is entirely stationary, and the other spinning (equal torque; unequal rotational speed). By contrast, a locked differential forces both left and right wheels on the same axle to rotate at the same speed under nearly all circumstances, regardless of the tractional differences at either wheel. Therefore, each wheel can apply as much rotational force as the traction under it will allow, and the torques on each side-shaft will be unequal. (Unequal torque, equal rotational speeds). Exceptions apply to automatic lockers, discussed below. A locked differential can provide

3255-441: Is included on almost all production cars. While Ackermann geometry is helpful in making a car turn easier, it inhibits the ability to slide sideways at full lock necessary to compete in drifting. Drift cars need a stiff suspension to reduce things like body roll and bouncing. Having a stiff suspension also allows for stronger suspension components that can withstand the damage and more importantly improved handling making it safer for

3348-462: Is irrelevant, but it pertains to controlling the temperature of the tires and setting the car up for the first judged corner. In tandem passes, the lead driver (in the lead car, Senko) often feints their entry to the first corner to upset the chase driver (in the chase car, Atooi); however, in some European series, this practice is frowned upon by judges and considered foul play, resulting in deduction of points. There are typically two sessions –

3441-400: Is judged based on their ability to stay on the line set in place by the judges. Points are allocated to outside zones and inner clips, and are also allocated to touch and go areas. Angle is the drivers ability to maintain a high level of angle that will be set by the angle judge in the drivers meeting. Style is judged based on three areas of focus; initiation, fluidity, and commitment. Initiation

3534-690: Is not unusual to see Australian/New Zealand domestic vehicles such as the Holden Commodore or Ford Falcon used in drifting competitions. The American market saw a relatively high volume of JDM cars being imported over the last decade, despite Japanese domestic vehicles being right-hand-drive only. Locally-sold imports such as the Lexus SC and Nissan 240SX feature heavily in American drifting, but they are usually modified with JDM engines to mirror their Japanese domestic equivalents (usually with

3627-431: Is perhaps the strongest means of locking an axle, but has no ability to differentiate wheel speeds whatsoever, putting high stress on all affected driveline components. The internal spider gears of an open differential can also be welded together to make a locked axle; this method is not recommended as the welding process seriously compromises the metallurgical composition of the welded components, and can lead to failure of

3720-448: Is referred to as " right to go left " and is mainly performed on dirt. Lightning, as well as other characters such as Mater , would continue to use variations of the drifting technique throughout the franchise. The 2017 film Baby Driver features an extended drifting chase scene in which Ansel Elgort 's eponymous character drives a Subaru WRX to evade the police after a bank robbery. The 2019 Netflix television series Hyperdrive

3813-410: Is regarded as one of the most in-depth and realistic driving computer games, as the game focuses heavily on vehicle tunability and simulation, with one of the widest ranges of vehicle customisation options, from everything from individual coilover dampening to adding on roof racks. There are also multiple in-game missions that focus heavily on drifting. The popular multiplayer mod for BeamNG.drive, BeamMP,

Locking differential - Misplaced Pages Continue

3906-590: Is the Eaton automatic locking differential (ALD), or Eaton automatic differential lock (ADL), developed by the Eaton Corporation and introduced in 1973 for GM 's Rounded-Line C/K Series pickups and utilities. The Eaton ADL is sometimes incorrectly called the Gov-Lok, despite neither GM nor Eaton ever calling it by that name. Gov-Lok is rather an unofficial name of unknown origin that gained popularity over

3999-458: Is the ZF sliding pins and cams type available for use in early Volkswagens. Selectable lockers allow the driver to lock and unlock the differential at will from the driver's seat. This can be accomplished in many ways. A spool or full spool (in contrast to mini-spool) is a device that connects the two axles directly to the ring gear. There is no differentiation side to side, so a vehicle equipped with

4092-505: Is the clutch type, in "two-way" form, for its consistent and aggressive lockup behavior under both acceleration and deceleration. Some drift cars use a spool "differential", which actually has no differential action at all — the wheels are locked to each other. Drifters on a budget may use a welded differential, where the side gears are welded to give the same effect as a spool. This makes it easier to break rear traction, because it reduces maximum traction in all situations except traveling in

4185-465: Is the same as on cars without the EDL option. If all drive wheels lose traction, then throttle control may be automatically applied. Electronic traction control systems may be integrated with anti-lock braking systems, which have a similar action on braking and use some similar components. Such systems are used for example on the most recent Nissan Pathfinder , Land Rover Defender , Land Rover Freelander ,

4278-568: Is used to score drifters. There is some regional variation. For example, in Australia, the chase car is judged on how accurately it emulates the drift of the lead car, as opposed to being judged on its own merit — this is only taken into consideration by the judges if the lead car is on the appropriate racing line. Other variations of the tansō/tsuisō and the tansō-only method is multi-car group judging, seen in Drift Tengoku videos where

4371-570: The McLaren P1 and the McLaren 650s. Welded differential (commonly referred to as welded diff), the gears in a (open) differential are welded together as to function as if there was no differential. This is a cheap alternative for offroading or drifting . Individual wheel drive (IWD), using separate engines, motors and/or gearboxes for each wheel in a vehicle, so that there is no need for torque distribution with drivetrain components from

4464-582: The Nissan 370Z , Nissan Silvia S14, Nissan Silvia S15, Toyota 86 , BMW E46, Ford Mustang , and the Mazda MX-5. A mechanical limited slip differential (LSD) is considered essential for drifting. Drifting with an open or viscous differential in a sustained slide generally yields relatively less impressive results. All other modifications are secondary to the LSD. The preferred form of LSD for drifting

4557-540: The differential carrier or axle as a whole, but will permit a wheel to be over-driven faster than the carrier speed. The most common example of this type would be the Detroit Locker, made by Eaton Corporation , also known as the Detroit No-Spin, which replaces the entire differential carrier assembly. Others, sometimes referred to as lunchbox lockers , use the stock differential carrier and replace only

4650-437: The mountain roads of Japan, and quickly gained a reputation amongst the racing crowd. In 1987, several popular car magazines and tuning garages agreed to produce a video of Tsuchiya's drifting skills. The video, known as Pluspy , became a hit and inspired many of the professional drifting drivers on the circuits today. In 1988, alongside Option magazine founder and chief editor Daijiro Inada , he helped to organize one of

4743-449: The "correct" time, so an ordinary clock would frequently have to be readjusted, even if it worked perfectly, because of seasonal variations in the equation of time. Williamson's and other equation clocks showed sundial time without needing readjustment. Nowadays, we consider clocks to be "correct" and sundials usually incorrect, so many sundials carry instructions about how to use their readings to obtain clock time. Differential analysers ,

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4836-507: The 21st century, which has in turn caused prices of front-engine, rear-wheel-drive cars to increase and parts become more scarce. Drifting has evolved into a competitive sport where drivers compete (almost exclusively in rear-wheel-drive cars) to earn points from judges based on various factors. At the top levels of competition, the D1 Grand Prix in Japan pioneered the sport. Other events such as Drift Games Extreme (formally known as

4929-646: The Drift Masters Virtual Championship. Assetto Corsa is also extremely modifiable with individual players able to create their own custom built cars and tracks from scratch. Many models are controversially pulled from games such as Forza Motorsport 7 and then modified to fit the needs of the driver. The data that drives these cars is also completely customizable, allowing players to recreate engines from real world dynomometer data as well as suspension geometry . This results in an extremely realistic simulation of each vehicle when data

5022-554: The Formula Drift Professional series, cars range from highly tuned Japanese automobiles reflecting the original styles of drifting to all-new age makes and models. Due to no power limit restrictions in the series, it is not uncommon for competitors to use a variety of different powerplants. Popular variations of Chevrolet LS engines are often seen bolted down to Japanese frames. In the King of Europe Drift Series,

5115-482: The Greek Drift Championship (Drift Wars) have come along to further expand it into a legitimate motorsport worldwide. Drivers within these series are able to keep their cars sliding for extended periods of time, often linking several turns. Judging takes place on just a small part of the circuit, a few linking corners that provide good viewing, and opportunities for drifting. The rest of the circuit

5208-1129: The IDC — Irish Drift Championship) in Ireland , Formula D in the United States , Drift Allstars , King of Europe, Drift Masters and the British Drift Championship in Europe, WDS in China, RDS in Russia, Formula Drift Asia in the Malaysia/Singapore/Thailand/Indonesia/Philippines, NZ Drift Series in New Zealand, the Australian Drifting Grand Prix, Spec - D Drift Series in Western Canada and

5301-602: The Japanese D1 Grand Prix), the NHRA Funny Car drag racer Kenji Okazaki, and Keiichi Tsuchiya gave demonstrations in a Nissan 180SX that the magazine had brought over from Japan. Entrants included Rhys Millen and Bryan Norris. Drifting has since exploded into a form of motorsport in North America, Australia, Asia and Europe. Grassroots drifting has seen a huge increase in popularity in

5394-732: The Nissan S-Chassis to allow for more clearance for higher steering angles. Many aftermarket companies have developed full lock kits including modification of the vehicle's original scrub radius , kingpin axis, Ackermann angle , amount of bump steer , caster angle , and kinematics as to maximize front grip and eliminate mechanical bind at steering angles in excess of 60°. While MacPherson strut vehicles are prevalent in professional drifting, double wishbone suspension vehicles can also be competitive, with often better caster and camber curves. Springs and shock absorbers are also tuned for higher skill levels, depending on track layout, which

5487-621: The Sun and Moon position pointers. The ball was painted black and white in hemispheres, and graphically showed the phase of the Moon at a particular point in time. An equation clock that used a differential for addition was made in 1720. In the 20th century, large assemblies of many differentials were used as analogue computers , calculating, for example, the direction in which a gun should be aimed. Chinese south-pointing chariots may also have been very early applications of differentials. The chariot had

5580-816: The Toyota Supra, the Toyota MR-2, the Mazda MX-5 and many other vehicles. Hollywood embraced the drifting subculture in the film The Fast and the Furious: Tokyo Drift (2006). Paul Newman 's character Doc Hudson , a 1951 Hudson Hornet who is later revealed to be the Fabulous Hudson Hornet , teaches his drifting technique to rookie Piston Cup racer Lightning McQueen in the Pixar film Cars (2006). Hudson's technique

5673-552: The art of drifting through curves in Formula 1 races by steering with the accelerator pedal. More recently, drifting as a specialized competition became popular in Japan. It was most popular in the All Japan Touring Car Championship races. Famous motorcyclist turned driver Kunimitsu Takahashi was the foremost creator of drifting techniques in the 1970s. This earned him several championships and

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5766-551: The carrier is rotated (by the input torque), the relationship between the speeds of the input (i.e. the carrier) and that of the output shafts is the same as other types of open differentials. Uses of spur-gear differentials include the Oldsmobile Toronado American front-wheel drive car. Locking differentials have the ability to overcome the chief limitation of a standard open differential by essentially "locking" both wheels on an axle together as if on

5859-408: The dial could be pointing in the wrong direction. The earliest verified use of a differential was in a clock made by Joseph Williamson in 1720. It employed a differential to add the equation of time to local mean time , as determined by the clock mechanism, to produce solar time , which would have been the same as the reading of a sundial . During the 18th century, sundials were considered to show

5952-480: The difference in power sent to each of the wheels. Torque vectoring is a technology employed in automobile differentials that has the ability to vary the torque to each half-shaft with an electronic system; or in rail vehicles which achieve the same using individually motored wheels. In the case of automobiles, it is used to augment the stability or cornering ability of the vehicle. Non-automotive uses of differentials include performing analogue arithmetic . Two of

6045-480: The differential's three shafts are made to rotate through angles that represent (are proportional to) two numbers, and the angle of the third shaft's rotation represents the sum or difference of the two input numbers. The earliest known use of a differential gear is in the Antikythera mechanism, c. 80 BCE, which used a differential gear to control a small sphere representing the Moon from the difference between

6138-557: The drift world but have a big importance. Sway bars limit the amount of "sway" or body roll you feel when taking corners, thus allowing for a more stable drift . Bushings are replaced with harder bushing to hold up in heavy loading and keep the alignment in place. When replacing suspension components, oftentimes an alignment will be required to ensure you will handle correctly. The alignment can get tricky when looking on forums so its recommended that you get adjustable parts so that you can adjust your alignment as needed. Steering modification

6231-414: The driver applies, and the confidence and dedication the driver shows when approaching track edges and barriers. The higher the rate-to-angle, the more speed and angle a driver can carry through the course. In addition, the fewer corrections they apply through the course and the closer they drive to the track edges or barriers, the higher their style score. This can be broken down into 4 main criteria that

6324-523: The driver to drift. The suspension (especially for a drift car) can get quite complex. However, some of the first modifications done to a drift car will be the addition of coil-overs as they are the heart of the cars suspension. This is a simple but major modification that stiffens the suspension instantaneously and allows for the car to handle well; all while adding some style with a lowered look. Sway bars and bushings are typically what many drift builds would complete next. Sway bars are sometimes discounted in

6417-420: The driver. Some automatic locking differential designs ensure that engine power is always transmitted to both wheels, regardless of traction conditions, and will "unlock" only when one wheel is required to spin faster than the other during cornering. These would be more correctly termed automatic unlocking differentials, because their at-rest position is locked. They will never allow either wheel to spin slower than

6510-632: The engine in the power band , or, on some cars that produce enough power and torque to four-gear transmissions similar to the ones used in NASCAR (such as the Andrews four-speed dog box that Vaughn Gittin Jr. ran in his 2016 Mustang ) with more open-ratio gears, this limits the number of shifts the driver has to do during their run. These may be coarser dog engagement straight cut gears instead of synchronised helical gears , for durability and faster shifting at

6603-456: The expense of noise and refinement. Wealthier drifters may use sequential gearboxes to make gear selection easier and faster, while sequential shift lever adapters can be used to make shifts easier without increasing shift time. Steering angles are also crucial as the driver progresses. The first stage of these modifications is usually a modified steering knuckle or upright. Extended control arms can be employed on MacPherson strut vehicles like

6696-580: The first events specifically for drifting called the Ikaten (short for Ikasu Hashiriya Team Tengoku). He has also drifted through every turn in Tsukuba Circuit . One of the earliest recorded drift events outside Japan took place in 1996 at Willow Springs Raceway in Willow Springs , California , hosted by the Japanese drifting magazine and organization Option . Daijiro Inada (founder of

6789-475: The first time in Opel Astra G (2001), et cetera. This is not in fact a differential lock, but operates at each wheel. Sensors monitor wheel speeds, and if one is rotating more than a specified number of revolutions per minute (e.g. 100) than the other (i.e. slipping) the traction control system momentarily brakes it. This transfers more power to the other wheel, but still employs the open differential , which

6882-442: The four-car team is judged in groups. The D1GP drift series has been prototyping and fine-tuning an electronic judging system based on custom sensors that record and transmit car data to a computer that judges the run. This system is also being tested in some European series. It is designed to remove subjectivity and/or predisposition of judges. Usually the track for such a system is broken up into several sections (usually three) and

6975-401: The front axle and the rear axle in an all-wheel drive vehicle. An advantage of the epicyclic design is that it is relatively compact width (when viewed along the axis of its input shaft). A spur-gear differential has an equal-sized spur gears at each end, each of which is connected to an output shaft. The input torque (i.e. from the engine or transmission) is applied to the differential via

7068-485: The front wheels to center. The locking knob on the hand brake is usually replaced with a spin turn knob; this stops the hand brake locking on when pulled. Nearly all drivers move the hand brake location or add an extra hydraulic hand brake actuator for greater braking force. Additional gauges are used to monitor boost levels , oil pressure and temperature, intake and coolant temperatures , and air-fuel ratio , among other data. Some drivers, especially in larger cars, move

7161-588: The hobby. One of the key sources responsible for the international spread of drifting is the Japanese manga and anime series Initial D , which features Takumi Fujiwara, a high school student who learns to drift on the Mount Akina tōge (mountain pass) using a custom Toyota AE86 . The series features a large number of Japanese performance vehicles, including the Mazda RX-7, the Nissan Skyline,

7254-512: The internal spider gears and shafts with interlocking plates. Both types of automatic lockers will allow for a degree of differential wheel speed while turning corners in conditions of equal traction, but will otherwise lock both axle shafts together when traction conditions demand it. Some other automatic lockers operate as an open differential until wheel slip is encountered and then they lock up. These types generally use an internal governor to monitor vehicle speed and wheel slip. An example of this

7347-473: The main professional drift series in Europe, BMW models have long ruled the scene, winning event after event, year after year. The most successful models include the E30 , E36 and E46 , which also present an advantage in cost (being more affordable than their Japanese rivals). For a few years, BMW V8 engine swaps were the most popular, providing a healthy 300 to 400 horsepower output. With the continuous evolution of

7440-687: The most realistic experience. In fact beginners will be more at ease with AWD chassis. The drift is easier to handle compared to the RWD chassis. With more experience, they turn to drive with RWD. However the RWD being more expensive, it is advised to start with AWD chassis. Many very good AWD cars with a robust chassis can be found for less than 50 US dollars, what makes this hobby affordable for all. The RWD chassis for more advanced driver could be found above 1,000 US dollars. Companies such as Overdose, Yokomo , MST, Tamiya , Team Associated , and Hobby Products International have made dedicated drift cars and supported

7533-493: The opposite direction to the turn (e.g. car is turning left, wheels are pointed right or vice versa, also known as opposite lock or counter-steering ). Drifting is traditionally performed using three methods: clutch kicking (where the clutch is rapidly disengaged and re-engaged with the intention of upsetting the grip of the rear wheels), weight transfer (using techniques such as the Scandinavian flick ), and employing

7626-523: The related technique of powersliding feature heavily in the Mario Kart franchise, where a successful drift or powerslide around corners will award the player with a short nitrous boost known as a "mini-turbo", with longer drifts awarding a slightly longer speed boost. Similar gameplay mechanics also exist in games from the Asphalt series, where drifting and other fast-paced vehicular maneuvers are

7719-418: The rotating carrier. Pinion pairs are located within the carrier and rotate freely on pins supported by the carrier. The pinion pairs only mesh for the part of their length between the two spur gears, and rotate in opposite directions. The remaining length of a given pinion meshes with the nearer spur gear on its axle. Each pinion connects the associated spur gear to the other spur gear (via the other pinion). As

7812-546: The rules allowed only a certain percentage of power to be sent to the front wheels, but they are banned in most (if not all) drifting competitions today. Despite the possibility of obtaining desirable Japanese domestic market vehicles in continents outside Japan, drifters in other countries prefer to use local versions of the same cars (for example, a Nissan 240SX instead of a Nissan Silvia S13 , etc.), or even domestic cars . A high volume of Japanese imports were brought to countries such as Australia and New Zealand, however it

7905-745: The sanctioning body. Professional drifting has come to the point where grip is tuned into cars to be defeated. It makes for a faster drift necessary in the current professional climate. Tires typically used by drifters are around the DOT tread wear rating of 200. Examples include the Hankook Ventus RS-3, Falken Azenis RT615K, Nitto NT05, Yokohama ADVAN Neova AD08R, and Achilles Radial 123s. Some other companies from Asia have also started developing their technology through sponsoring professional drivers. These companies include Nankang, Westlake and Zestino. Tires are often modified with lettering to give them

7998-527: The seating position for a better weight distribution, such as Daigo Saito and his 2014 JZX100 Mk.II Chaser. In the United States, competitive drifters are required to run USDOT -approved (road-legal) tires similar to racing slicks in rubber composition, but with shallow treads included. This is permitted, with the exception of some major championships including D1GP and Formula Drift, which only permit commercially available tires that are approved by

8091-431: The speed, angle, showmanship, and line taken through a corner or set of corners. Despite the popular belief that drifting originated in 1970s Japan , this driving technique was first practiced in Europe before 1950. Automotive icon Enzo Ferrari credits Italian driver Tazio Nuvolari as being the inventor of the four-wheel drift. Later, British racing driver Stirling Moss improved upon Nuvolari's technique, mastering

8184-562: The sport, however, these have now become obsolete, making way for more powerful American V8 engines or classic Nissan RB26DETT and Toyota 2JZ-GTE engines. As an example, the top 15 cars in the 2003 D1GP, top 10 in the 2004 D1GP, and top 10 in the 2005 D1GP were as follows: The top cars in the Red Bull Drifting Championship were as follows: As for 2017, the top cars participating in Formula Drift are

8277-403: The system automatically generates scores based on speed, angle and fluidity of the driver in each section, combining the scores for the final score. In certain situations judges can change or overrule a score, which happens, though rarely. Formula Drift is the top United States Drifting series. Its judging style for competition is based on line, angle, and speed. When judging for line the driver

8370-437: The unit under stress. Regular "open differential" with internal gears welded together to form a locked differential or spool. Common for drifting or offroading where locking differentials are too expensive or unreliable. Because they do not operate as smoothly as standard differentials, automatic locking differentials are often responsible for increased tire wear. Some older automatic locking differentials are known for making

8463-417: The vehicle. Furthermore, automatically locking differentials can cause a loss of control on ice where an open differential would allow one wheel to spin and the other to hold, while not transferring power. An example of this would be a vehicle parked sideways on a slippery grade. When both wheels spin, the vehicle will break traction and slide down the grade. Limited-slip differentials (LSD) are considered

8556-412: The violent motion of the engine and gearbox under these conditions. The driveshafts are often replaced with carbon fiber drive shafts, as they offer the highest rotational mass savings, are stronger than alternative metals, and flexible enough to absorb and dissipate vibrations, thus easing the load on the gearbox as well as the rest of the drivetrain. Gear sets may be replaced with closer ratios to keep

8649-509: The years. Both Eaton and GM do not know where the name came from, and Eaton has made several unsuccessful attempts in the past to debunk the Gov-Lok name. An updated version of the old Eaton ADL design is still available from Eaton, now known as the Eaton mLocker mechanical differential lock. Some other automatic lockers operate as an open differential until high torque is applied, at which point they lock up. This style generally uses internal gears systems with very high friction. An example of this

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