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19-440: Fastrac may refer to JCB Fastrac , a tractor by J. C. Bamford Fastrac rocket engine , NASA's (cancelled) project Fastrac (software) , VTLS software Formation Autonomy Spacecraft with Thrust, Relnav, Attitude, and Crosslink , A University of Texas satellite See also [ edit ] Fast Track (disambiguation) Fastrack (disambiguation) Topics referred to by

38-451: A central differential and epicyclic gearing reduction units built into the hub ends, where the wheel bolts. The 7000 Series rear axle has a central differential and has in-board epicyclic gearing reduction units. A standard locking differential is provided in the rear axle of all machines. 100, 1000, 2000 and 4000 Series machines have a Detroit No-Spin -style differential lock in front axle. 3000, 7000 and 8000 Series machines have

57-430: A driver-controlled clutch pack engaged locking differential. A two-speed power take-off (PTO) is standard at the rear and a factory option at the front. Depending on the model either speeds of 1000/540 or 1000/750 are available. Multi-link suspension is fitted between the chassis and both the front and rear beam axles . The front suspension on most machines uses four links, a panhard rod and anti-roll bar . On

76-462: A hydraulic link between the steering wheels and the front wheels. This limits the maximum speed of these models to 50 km/h (31 mph), except now in Germany where 60 km/h (37 mph) is allowed. These machines have mechanical power steering similar to a large truck . This system gives a mechanical link between the steering wheel and the front wheels. Generally these machines have had

95-441: A maximum speed of 65 km/h (40 mph) except some 100 and 3000 series machines having a maximum speed of 75 km/h (47 mph). These machines have dual circuit hydrostatic steering allowing legal speeds over 60 km/h. An automatic Global Positioning System -controlled steering system using a ( Differential GPS ) is available for the 3000, 4000, 7000 and 8000 series machines. Rear wheel steering ( four-wheel steering )

114-458: A similar connected rear axle damper (fifth shock) on some Explorers and light trucks with rear leaf springs. Jaguar also used a Panhard rod to locate the rear axle on its unusual cantilever leaf sprung Mark 2 . The advantage of the Panhard rod is its simplicity. Its major disadvantage is that the body must necessarily move in an arc relative to the axle, with the radius equal to the length of

133-481: Is available as an option on 2000 and 4000 series machines. The electronic system has 5 modes of operation, and only allows four-wheel steering below 20 km/h (12 mph). All models are fitted with large diameter external disc brakes at both front and rear individually on each wheel. An anti-lock braking system (ABS) is fitted on some models, depending on the maximum vehicle speed and legal requirements. An auxiliary hydraulic system ( hydraulic drive system )

152-623: Is different from Wikidata All article disambiguation pages All disambiguation pages JCB Fastrac The JCB Fastrac is a high-speed agricultural tractor series manufactured by JCB Landpower, part of the JCB group. Production began in 1991, with continual development to the present day. Generally the maximum speed of most models is 65 km/h (40 mph), but slower (40 km/h) and faster (80 km/h) versions are produced. All models have six-cylinder diesel engines. Initially supplied by Perkins Engines then Cummins ,

171-416: Is standard on all machines. It is used to control the front and rear linkages and through quick connectors at the front and rear of the tractor to control and power implements. A three-point hitch is standard at the rear of the machine and on option on front. There are several types available depending on the country the machine is built for. Traditionally the cab has been centrally mounted. Some models,

190-505: Is to let the wheels move vertically with respect to the body, while preventing movement forward and backwards (longitudinally), or side to side (laterally). The Panhard rod is a simple device designed to prevent lateral movement. It consists of a rigid bar running sideways in the same plane as the axle, connecting one end of the axle to the car body or chassis on the opposite side of the vehicle. The bar attaches on either end with pivots that let it swivel upwards and downwards only, limiting

209-407: The 4000 series a V-link is used at the front. The rear suspension uses two lower link and a V-link on top plus an anti-roll bar . Hydropneumatic suspension is used on the rear of all models and on the front of the 4000 and 7000 series Fastrac. This is similar to that used on some Citroën cars. These Fastrac machines have hydrostatic steering similar to most agricultural tractors with only

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228-419: The 7000 series and latter 8250, have the cab mounted at the rear of the tractor. The most recent fastrac iteration, the 4000 series tractors, have forward sloping cabs, similar to those on combine harvesters . All cabs have a full-size passenger seat and an air suspensioned driver's seat. This is not intended to be a complete list but includes the main models produced. JCB currently holds the world record for

247-619: The Fastest Tractor (Modified), this was achieved on 23 October 2019 by driver Guy Martin , hitting a top speed of 217.570 km/h (135.19 mph) in Elvington, North Yorkshire . A JCB Fastrac was chosen by BBC 's Top Gear host Jeremy Clarkson . It was driven on the show around the Top Gear Test Track by The Stig , in a time of 2:57.4, making it the fastest of the three featured tractors, but also currently

266-540: The Panhard rod. If the rod is too short, it allows excessive sideways movement between the axle and the body at the ends of the spring travel. Therefore, the Panhard rod is less desirable on smaller cars than larger ones. Two notable exceptions to this are the Mitsubishi Pajero Mini and Suzuki Jimny . Both are small vehicles (they fall in the light vehicles category in Japan) that have a Panhard rod, but

285-400: The axle's movement to the vertical plane. This does not effectively locate the axle longitudinally, therefore it is usually used in conjunction with trailing arms that stabilize the axle in the longitudinal direction. A Panhard rod is typically used with coil spring suspensions; with a leaf spring suspension, the springs themselves usually supply enough lateral rigidity. However, Ford used

304-483: The current supplier is AGCO SISU Power. Three different gearboxes have been fitted to the Fastrac in production. All models are selectable four-wheel drive . The rear axle is driven as standard and drive to the front axle selected by the driver, through a hydraulically controlled clutch. This clutch is sprung on to give four-wheel drive and hydraulically disengaged to give two-wheel drive . Most Fastrac axles have

323-613: The fifth-slowest-ever lap time. A JCB Fastrac appeared in news coverage of the JCB Dieselmax land speed record car, pushing it to its 30 mph starting speed. In 2019 a modified JCB Fastrac broke the record for the world fastest tractor after it hit a top speed of 153.771mph. The record was ratified by the Guinness World Records . [REDACTED] Media related to JCB tractors at Wikimedia Commons Panhard rod The purpose of automobile suspension

342-405: The off-road nature of these vehicles mean that the lateral movement between axle and body is not important. A suspension design that is similar but dramatically reduces the sideways component of the axle's vertical travel is a Watt's linkage . Some vehicles with live-axle suspensions cannot use a Watt's linkage due to design or other practical constraints; these often incorporate a Panhard rod as

361-410: The same term [REDACTED] This disambiguation page lists articles associated with the title Fastrac . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Fastrac&oldid=930445274 " Category : Disambiguation pages Hidden categories: Short description

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