79-710: Leyland Motors Limited (later known as the Leyland Motor Corporation ) was an English vehicle manufacturer of lorries , buses and trolleybuses . The company diversified into car manufacturing with its acquisitions of Triumph and Rover in 1960 and 1967, respectively. It gave its name to the British Leyland Motor Corporation , formed when it merged with British Motor Holdings in 1968, to become British Leyland after being nationalised . British Leyland later changed its name to simply BL, then in 1986 to Rover Group . After
158-406: A fifth wheel hitch. Box trucks have walls and a roof, making an enclosed load space. The rear has doors for unloading; a side door is sometimes fitted. Chassis cab trucks have a fully enclosed cab at the front, with bare chassis frame-rails behind, suitable for subsequent permanent attachment of a specialized payload, like a fire-truck or ambulance body. Concrete mixers have
237-485: A 25 mph (40 km/h) speed governor as they are classified as low-speed vehicles. These vehicles have found uses in construction, large campuses (government, university, and industrial), agriculture, cattle ranches, amusement parks, and replacements for golf carts. Major mini-truck manufacturers and their brands include: Daihatsu Hijet , Honda Acty , Tata Ace , Mazda Scrum , Mitsubishi Minicab , Subaru Sambar , and Suzuki Carry . Light trucks are car-sized (in
316-520: A 5.9 L Cummins was introduced. It was notable at the time for its low-level passenger side windscreen, featured as a safety aid to enable the driver to see the kerb, although this was removed on later models. The basic cab had a long service life, being used later on the Leyland DAF 45. The Leyland Constructor was a 6x4, three axle wagon with gross weight up to 24 tonnes used as a tipper or on short haul distribution duties. The Leyland Roadtrain
395-540: A commercial vehicle without a trailer or other articulation is formally a "straight truck" while one designed specifically to pull a trailer is not a truck but a " tractor ". The majority of trucks currently in use are powered by diesel engines , although small- to medium-size trucks with gasoline engines exist in North America . Electrically powered trucks are more popular in China and Europe than elsewhere. In
474-401: A common construction: they are made of a chassis , a cab , an area for placing cargo or equipment, axles , suspension and roadwheels , an engine and a drivetrain . Pneumatic , hydraulic , water , and electrical systems may also be present. Many also tow one or more trailers or semi-trailers. The "cab", or "cabin" is an enclosed space where the driver is seated. A " sleeper " is
553-711: A compartment attached to or integral with the cab where the driver can rest while not driving, sometimes seen in semi-trailer trucks. There are several cab configurations: A further step from this is the side loading forklift that can be described as a specially fabricated vehicle with the same properties as a truck of this type, in addition to the ability to pick up its own load. Most small trucks such as sport utility vehicles (SUVs), vans or pickups , and even light medium-duty trucks in North America, China, and Russia use gasoline engines (petrol engines), but many diesel engined models are now being produced. Most of
632-425: A complete new vehicle at the time, so designers were instructed to utilise as many existing in-house components as possible. It was perceived at the time that the resulting model would be a stopgap until the new T45 range was ready for production toward the latter half of the 1970s. The cab was a re-worked version of the "Ergomatic" tilt cab of 1965, heavily modified with different lower panels, raised height etc., and
711-580: A factory to the nearest railway station. The first semi-trailer appeared in 1881, towed by a steam tractor manufactured by De Dion-Bouton . Steam-powered wagons were sold in France and the United States until the eve of World War I , and 1935 in the United Kingdom, when a change in road tax rules made them uneconomic against the new diesel lorries. In 1895, Karl Benz designed and built
790-461: A film in 1977 entitled The Quality Connection showing the importance of quality control. It featured well known actors including Frank Windsor , George A Cooper , David Suchet , Michael Robbins , Madeline Smith and Trevor Bannister . Truck A truck or lorry is a motor vehicle designed to transport freight , carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but
869-406: A ladder if tipped on end. The rails consist of a tall vertical section (two if boxed) and two shorter horizontal flanges. The height of the vertical section provides opposition to vertical flex when weight is applied to the top of the frame (beam resistance). Though typically flat the whole length on heavy-duty trucks, the rails may sometimes be tapered or arched for clearance around the engine or over
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#1732773015949948-688: A long history dating from 1896, when the Sumner and Spurrier families founded the Lancashire Steam Motor Company in the town of Leyland in North West England. Their first products included steam powered lawn mowers . The company's first vehicle was a 1.5-ton-capacity steam powered van. This was followed by a number of undertype steam wagons using a vertical fire-tube boiler . By 1905 they had also begun to build petrol-engined wagons. The Lancashire Steam Motor Company
1027-420: A manual transmission with synchromesh (synchronizers). Bigger trucks often use manual transmissions without synchronizers, saving bulk and weight, although synchromesh transmissions are used in larger trucks as well. Transmissions without synchronizers, known as "crash boxes", require double-clutching for each shift, (which can lead to repetitive motion injuries), or a technique known colloquially as "floating",
1106-545: A manual transmission, while conventional automatic or automated manual transmissions would have anything from 5 to 12 gears. Almost all heavy truck transmissions are of the "range and split" (double H shift pattern) type, where range change and so‑called half gears or splits are air operated and always preselected before the main gear selection. A truck frame consists of two parallel boxed (tubular) or C‑shaped rails, or beams, held together by crossmembers . These frames are referred to as ladder frames due to their resemblance to
1185-407: A method of changing gears which does not use the clutch, except for starts and stops, due to the physical effort of double-clutching, especially with non-power-assisted clutches, faster shifts, and less clutch wear. Double-clutching allows the driver to control the engine and transmission revolutions to synchronize so that a smooth shift can be made; for example, when upshifting, the accelerator pedal
1264-510: A more uncertain origin, but probably has its roots in the rail transport industry, where the word is known to have been used in 1838 to refer to a type of truck (a goods wagon as in British usage, not a bogie as in the American), specifically a large flat wagon. It might derive from the verb lurry (to carry or drag along, or to lug) which was in use as early as 1664, but that association
1343-528: A number of customers who had traditionally purchased other marques from within the Leyland empire—Albion, AEC, Scammell, etcetera – who were now left with no alternative but to have a Leyland-branded vehicle or purchase from elsewhere. Some Constructors, with their Scammell-based chassis, were built with Scammell badging as well. Throughout its production run, engine choices included the AEC-based TL12,
1422-404: A number of roadtrains in its fleet which enjoyed a comparatively long service life (until the late 1990s) before being replaced by the newer DAF 85. Sales were never quite satisfactory, however, with the vacation closure extended in 1986 to reduce unsold stock. Production ended in 1990, a few years after the sale of Leyland Trucks to Dutch firm DAF in 1987, although as a postscript DAF relaunched
1501-401: A roof and floor, used for transporting fresh and frozen cargo such as ice cream, food, vegetables, and prescription drugs. They are mostly equipped with double-wing rear doors, but a side door is sometimes fitted. Refuse trucks have a specialized body for collecting and, often, compacting trash collected from municipal, commercial, and industrial sites. This application has the widest use of
1580-547: A rotating drum on an inclined axis, rotating in one direction to mix, and in the other to discharge the concrete down chutes. Because of the weight and power requirements of the drum body and rough construction sites, mixers have to be very heavy duty. Dual drive/Steer trucks are vehicles used to steer the rear of trailers . Dump trucks ("tippers" in the UK) transport loose material such as sand, gravel, or dirt for construction. A typical dump truck has an open-box bed, which
1659-709: A six-axle truck may have a maximum weight of 44 t (97,000 lb) or more. Off-road trucks include standard, extra heavy-duty highway-legal trucks, typically outfitted with off-road features such as a front driving axle and special tires for applications such as logging and construction, and purpose-built off-road vehicles unconstrained by weight limits, such as the Liebherr T 282B mining truck. Australia has complex regulations over weight and length, including axle spacing, type of axle/axle group, rear overhang, kingpin to rear of trailer, drawbar length, ground clearance, as well as height and width laws. These limits are some of
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#17327730159491738-472: A straight carry over from the preceding "stopgap" model Marathon range, The Rolls-Royce Eagle 265/300 and the Cummins 290 L10 and 14-litre 350 coupled to a Spicer or Eaton transmission, although all versions produced a distinctive whine from the propshaft knuckle joint when approaching 60 mph (97 km/h). The TL12 engine was dropped early on in the production run, with most large fleet buyers choosing
1817-411: A truck, of a trailer, from axle to hitch point, kingpin to rear of trailer, and turning radius are all regulated. In additions, there are special rules for carrying containers, and countries can set their own rules for local traffic. The United States Federal Bridge Law deals with the relation between the gross weight of the truck, the number of axles, the weight on and the spacing between the axles that
1896-622: A version of their Xebra electric tricycle (licensable in the U.S. as a motorcycle). Popular in Europe and Asia, many mini-trucks are factory redesigns of light automobiles, usually with monocoque bodies. Specialized designs with substantial frames such as the Italian Piaggio shown here are based upon Japanese designs (in this case by Daihatsu ) and are popular for use in "old town" sections of European cities that often have very narrow alleyways. Regardless of name, these small trucks serve
1975-573: A wide range of uses. In Japan, they are regulated under the Kei car laws, which allow vehicle owners a break in taxes for buying a smaller and less-powerful vehicle (currently, the engine is limited to 660 cc displacement). These vehicles are used as on-road utility vehicles in Japan. These Japanese-made mini-trucks that were manufactured for on-road use are competing with off-road ATVs in the United States, and import regulations require that these mini-trucks have
2054-578: Is entering the European truck market directly. With its purchase of a 26% stake in UK-based bus manufacturer Optare in 2010, Ashok Leyland has taken a step closer to reconnecting with its British heritage, as Optare is a direct descendant of Leyland's UK bus-making division. On 21 December 2011, Ashok Leyland bought an additional 49% stake in Optare, bringing its total to 75%. Historically, Leyland Motors
2133-427: Is hinged at the rear and lifts at the front, allowing the material in the bed to be unloaded ("dumped") on the ground behind the truck. Flatbed trucks have an entirely flat, level platform body. This allows for quick and easy loading but has no protection for the load. Hanging or removable sides are sometimes fitted, often in the form of a stakebody . Refrigerator trucks have insulated panels as walls and
2212-422: Is in neutral, it allows the engine speed to drop and synchronize engine and transmission revolutions relative to the road speed. Downshifting is performed in a similar fashion, except the engine speed is now required to increase (while the transmission is in neutral) just the right amount in order to achieve the synchronization for a smooth, non-collision gear change. "Skip changing" is also widely used; in principle,
2291-573: Is most often made as vans. Medium trucks are larger than light but smaller than heavy trucks. In the US, they are defined as weighing between 13,000 and 33,000 lb (5.9 and 15.0 t). For the UK and the EU the weight is between 3.5 and 7.5 t (7,700 and 16,500 lb). Local delivery and public service ( dump trucks , garbage trucks and fire-fighting trucks ) are normally around this size. Heavy trucks are
2370-461: Is mostly reserved for larger vehicles. In Australia and New Zealand, a pickup truck is frequently called a ute (short for "utility" vehicle), while in South Africa it is called a bakkie ( Afrikaans : "small open container"). In the United Kingdom, India, Malaysia, Singapore, Ireland, and Hong Kong lorry is used instead of truck , but only for the medium and heavy types, while truck
2449-469: Is not definitive. The expanded meaning of lorry , "self-propelled vehicle for carrying goods", has been in usage since 1911. In the United States, Canada, and the Philippines, "truck" is usually reserved for commercial vehicles larger than regular passenger cars, but includes large SUVs, pickups, and other vehicles with an open load bed. In Australia, New Zealand and South Africa, the word "truck"
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2528-412: Is released and the clutch pedal is depressed while the gear lever is moved into neutral, the clutch pedal is then released and quickly pushed down again while the gear lever is moved to the next higher gear. Finally, the clutch pedal is released and the accelerator pedal pushed down to obtain the required engine speed. Although this is a relatively fast movement, perhaps a second or so while the transmission
2607-619: Is still in service, but has now been replaced by the MAN version. In this format the British Army purchased 1,440 vehicles plus a significant number of spare Roadtrain cabs, to allow for accident damage The Leyland Landtrain was produced between 1980 and 1987, specifically for export markets. A bonneted design, it was built in the UK and exported in completed and kit form, the latter for local construction in Kenya and Nigeria. The Leyland Comet
2686-516: Is used almost exclusively to refer to pickups . Often produced as variations of golf cars , with internal combustion or battery electric drive , these are used typically for off-highway use on estates, golf courses, and parks. While not suitable for highway use some variations may be licensed as slow speed vehicles for operation on streets, generally as a body variation of a neighborhood electric vehicle . A few manufactures produce specialized chassis for this type of vehicle, while Zap Motors markets
2765-552: The European Union , vehicles with a gross combination mass of up to 3.5 t (3.4 long tons; 3.9 short tons) are defined as light commercial vehicles , and those over as large goods vehicles . Trucks and cars have a common ancestor: the steam-powered fardier Nicolas-Joseph Cugnot built in 1769. However, steam wagons were not common until the mid-19th century. The roads of the time, built for horse and carriages, limited these vehicles to very short hauls, usually from
2844-517: The Rover brand that Leyland had bought in the 1960s, and would eventually gain prominence as BL gradually retired most of its marques. The equity stake in Ashok Leyland was controlled by Land Rover Leyland International Holdings, and sold in 1987. At this point, while building about 10,000 trucks per annum, Leyland was more and more depending on outside engines as production of their own 98-series
2923-510: The cab-over configuration in North America, to provide better maneuverability in tight situations. They are also among the most severe-duty and highest GVWR trucks on public roads. Semi-tractors ("artics" in the UK) have a fifth wheel for towing a semi-trailer instead of a body. British Motor Holdings Too Many Requests If you report this error to the Wikimedia System Administrators, please include
3002-422: The diesel engine did not appear in production trucks until Benz introduced it in 1923. The diesel engine was not common in trucks in Europe until the 1930s. In the United States, Autocar introduced diesel engines for heavy applications in the mid-1930s. Demand was high enough that Autocar launched the "DC" model (diesel conventional) in 1939. However, it took much longer for diesel engines to be broadly accepted in
3081-461: The phase-out of fossil fuel vehicles includes trucks. According to The Economist magazine "Electric lorries will probably run on hydrogen, not batteries, which are too expensive." Other researchers say that once faster chargers are available batteries will become competitive against diesel for all, except perhaps the heaviest, trucks. Small trucks use the same type of transmissions as almost all cars, having either an automatic transmission or
3160-483: The Rolls-Royce engine. The Roadtrain was available in day- and sleeper-cabbed form, in high and low datum versions—this refers to the cab height—high datum versions were intended as long haul vehicles with higher mounted cabs and more internal space. 6x2 versions were built in high cab form only on a chassis that was basically that of the ageing Scammell trunker. The Constructor's chassis was entirely Routeman behind
3239-465: The TL12. Other engine options included a 200 bhp Leyland L11, as well as Cummins 10- and 14-litre engines at 250 and 330 bhp, respectively. Production began in 1973, and various shortcomings were noted, including below-par heating and ventilation, and pronounced cab roll. However, road testers of the time were very impressed by the truck's power and performance. In 1977, the redesigned "Marathon 2"
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3318-534: The Titan and Tiger ranges in 1927 that revolutionised bus design. After 1945, Leyland created another milestone with the trend-setting Atlantean rear-engined double-decker bus design produced between 1956 and 1986. See List of Leyland buses for the list of bus products. The G-series cab was built in Bathgate and was available with several different names, such as Terrier, Clydesdale, and Reiver. After this cab
3397-545: The US, no more than 13,900 lb (6.3 t)) and are used by individuals and businesses alike. In the EU they may not weigh more than 3.5 t (7,700 lb) and are allowed to be driven with a driving licence for cars. Pickup trucks , called utes in Australia and New Zealand, are common in North America and some regions of Latin America, Asia, and Africa, but not so in Europe, where this size of commercial vehicle
3476-558: The US: gasoline engines were still in use on heavy trucks in the 1970s. Electrically powered trucks predate internal combustion ones and have been continuously available since the mid-19th-century. In the 1920s Autocar Trucks was the first of the major truck manufacturers to offer a range of electric trucks for sale. Electric trucks were successful for urban delivery roles and as specialized work vehicles like forklifts and pushback tugs . The higher energy density of liquid fuels soon led to
3555-586: The admittedly short life of commercial vehicles, any Roadtrain in commercial operation is now a very rare sight indeed. However, a small number remain in use throughout the country as towing-and-recovery vehicles. The army made use of an 8x6 version of the Roadtrain as a hook loader until recently. This is known to the British Army as Medium Mobility Load System (MMLS) Demountable Rack Offload and Pickup System (DROPS), which has seen action in Iraq and Afghanistan and
3634-403: The axles. The holes in rails are used either for mounting vehicle components and running wires and hoses or measuring and adjusting the orientation of the rails at the factory or repair shop. The frame is usually made of steel , but can be made (whole or in part) of aluminum for a lighter weight. A tow bar may be found attached at one or both ends, but heavy tractors almost always make use of
3713-633: The bus and truck production becoming the Leyland Truck & Bus division within the Land Rover Leyland Group . This division was split into Leyland Bus and Leyland Trucks in 1981. Leyland Trucks depended on British sales as well as export markets, mainly Commonwealth and ex-Commonwealth markets. The early 1980s were very hard, with export sales drying up in many places such as oil-dependent Nigeria . In 1986, BL changed its name to Rover Group , with its name being derived from
3792-574: The cab, albeit with altered suspension and with the front chassis rails splayed wider apart to fit the new C40 cab. In 1986, the high roofed Roadtrain interstate was introduced, a top of the range long distance truck with standing room inside. The Roadtrain was a common sight throughout most of the 1980s, with a great many of the major fleet users in the UK such as Tesco , Blue Circle Industries (unusually with high datum day cabs) and BRS running them. The firm of Swain's based in Rochester , Kent had
3871-431: The decline of electric-powered trucks in favor of, first, gasoline, and then diesel and CNG-fueled engines until battery technology advanced in the 2000s when new chemistries and higher-volume production broadened the range of applicability of electric propulsion to trucks in many more roles. Today, manufacturers are electrifying all trucks ahead of national regulatory requirements, with long-range over-the-road trucks being
3950-493: The first internal combustion truck. Later that year some of Benz's trucks were modified to become busses by Netphener . A year later, in 1896, another internal combustion engine truck was built by Gottlieb Daimler , the Daimler Motor Lastwagen . Other companies, such as Peugeot , Renault and Büssing , also built their own versions. The first truck in the United States was built by Autocar in 1899 and
4029-475: The first named Volvo Bus model, the Volvo Olympian , and aside from minor frame changes the major alterations were the fitment of Volvo axles, braking system, and controls. Both were the best selling double-deck bus chassis of their time. The Leyland name and logo continues as a recognised and respected marque across India, the wider subcontinent and parts of Africa in the form of Ashok Leyland . Part of
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#17327730159494108-661: The giant Hinduja Group , Ashok Leyland manufactures buses, trucks, defence vehicles and engines. The company is a leader in the heavy transportation sector within India and has an aggressive expansionary policy. In 1987 the London based Hinduja Group bought the Indian-based Ashok Leyland company. Today, Ashok-Leyland is pursuing a joint venture with Nissan , and through its acquisition of the Czech truck maker, Avia,
4187-443: The heavier trucks use four-stroke diesel engines with a turbocharger and intercooler . Huge off-highway trucks use locomotive-type engines such as a V12 Detroit Diesel two stroke engine. A large proportion of refuse trucks in the United States employ CNG (compressed natural gas) engines for their low fuel cost and reduced carbon emissions. A significant proportion of North American manufactured trucks use an engine built by
4266-440: The highest in the world, a B-double can weigh 62.5 t (61.5 long tons; 68.9 short tons) and be 25 m (82 ft) long, and road trains used in the outback can weigh 172 t (169.3 long tons; 189.6 short tons) and be 53.5 m (176 ft) long. The European Union also has complex regulations. The number and spacing of axles, steering, single or dual tires, and suspension type all affect maximum weights. Length of
4345-407: The largest on-road trucks, Class 8 . These include vocational applications such as heavy dump trucks, concrete pump trucks, and refuse hauling, as well as ubiquitous long-haul 4x2 and 6×4 tractor units . Road damage and wear increase very rapidly with the axle weight. The number of steering axles and the suspension type also influence the amount of the road wear. In many countries with good roads
4424-521: The last remaining major independent engine manufacturer ( Cummins ) but most global OEMs such as Volvo Trucks and Daimler AG promote their own "captive" engines. In the European Union, all new truck engines must comply with Euro VI emission regulations, and Euro 7 from the late 2020s has stricter exhaust limits and also limits air pollution from brakes and tires . As of 2019 several alternative technologies are competing to displace
4503-467: The model in low-datum form (it was already manufacturing the large DAF 95) as the DAF 80, using the Roadtrain cab with the 11.6-litre (710 cu in) DAF 330 ATi engine (quite ironic, given that this engine had its roots in the Leyland O.680). This model was produced for a relatively short time until 1993 with the launch of the brand new cabbed DAF 85. Due partly to the cab's propensity to rust and also to
4582-662: The most challenging. Truck is used in American English ; the British English equivalent is lorry. The first known usage of "truck" was in 1611 when it referred to the small strong wheels on ships' cannon carriages, and comes from "Trokhos" (Greek) = "wheel". In its extended usage, it came to refer to carts for carrying heavy loads, a meaning known since 1771. Its expanded application to "motor-powered load carrier" has been in usage since 1930, shortened from "motor truck", which dates back to 1901. "Lorry" has
4661-484: The new Ashok factory. The products were branded as Ashok Leyland . Leyland Motors acquired other companies in the post war years: Donald Stokes , previously Sales Director, was appointed managing director of Leyland Motors Limited in September 1962. Originally a Leyland student apprentice he had grown up with the company. He became chairman in 1966. Chronologically, the 1960s growth of Leyland Motor Corporation (LMC)
4740-424: The operation is the same as double-clutching, but it requires neutral be held slightly longer than a single-gear change. Common North American setups include 9, 10, 13, 15, and 18 speeds. Automatic and automated manual transmissions for heavy trucks are becoming more and more common, due to advances both in transmission and engine power. In Europe, 8, 10, 12, and 16 gears are common on larger trucks with
4819-469: The retirement of Henry Spurrier in 1964. Spurrier inherited control of Leyland Motors from his father in 1942, and successfully guided its growth during the postwar years. Whilst the Spurrier family were in control the company enjoyed excellent labour relations—reputedly never losing a day's production through industrial action. During World War II , Leyland Motors, along with most vehicle manufacturers,
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#17327730159494898-592: The truck can have on the Interstate highway system. Each State determines the maximum permissible vehicle , combination , and axle weight on state and local roads. Uniquely, the State of Michigan has a gross vehicle weight limit of 164,000 lb (74 t), which is twice the U.S. federal limit. A measure to change the law was defeated in the Michigan Senate in 2019. Almost all trucks share
4977-405: The use of diesel engines in heavy trucks. CNG engines are widely used in the US refuse industry and in concrete mixers, among other short-range vocations, but range limitations have prevented their broader uptake in freight hauling applications. Heavy electric trucks and hydrogen-powered trucks are new to the market in 2021, but major freight haulers are interested. Although cars will be first
5056-400: The various vehicle manufacturing businesses of BL and its successors went defunct or were divested, the following marques survived: Jaguar and Land Rover , now built by Jaguar Land Rover owned by TATA Motors ; MG , now built by MG Motor , and Mini , now built by BMW . The truck building operation survived largely intact as Leyland Trucks , a subsidiary of Paccar . Leyland Motors has
5135-430: The vast majority feature body-on-frame construction, with a cabin that is independent of the payload portion of the vehicle. Smaller varieties may be mechanically similar to some automobiles . Commercial trucks can be very large and powerful and may be configured to be mounted with specialized equipment, such as in the case of refuse trucks , fire trucks , concrete mixers , and suction excavators . In American English,
5214-596: Was a major manufacturer of buses used in the United Kingdom and worldwide. It achieved a number of firsts or milestones that set trends for the bus industry. It was one of the first manufacturers to devise chassis designs for buses that were different from trucks, with a lower chassis level to help passengers board more easily. Its chief designer, John George Rackham, who had experience at the Yellow Coach Company in Chicago before returning to England, created
5293-742: Was a max weight model with distance work in mind. The T45's cab is called the C40 and its design was a joint effort between Leyland, BRS and Ogle Design and was seen as the height of modernity when compared with its predecessors, the idea being to have one basic design to replace the various outgoing models (for example, the Bathgate built the G cab on the Terrier, the Ergomatic cabbed the Lynx, Beaver etc.). This did indeed make good economic sense; however, there has been speculation that Leyland did in fact alienate
5372-460: Was a range of heavy goods vehicle tractor units manufactured by Leyland Trucks between 1980 and 1990. The nomenclature "T45" refers to the truck range as a whole and encompasses models such as the lightweight 7.5-ton Roadrunner, Freighter (fourwheel rigid truck), Constructor (multi-axle rigid tipper or mixer chassis – its chassis owing much to the outgoing Scammell 8-wheeler Routeman), and Cruiser (basic spec low weight tractor unit). The Roadtrain itself
5451-686: Was as follows: In 1968 Leyland Motors merged with British Motor Holdings (BMH) to form the British Leyland Motor Corporation (BLMC). BMH, which was the product of an earlier merger between the British Motor Corporation , the Pressed Steel Company and Jaguar , brought with it more marques , including Daimler , Guy , BMC , Austin , MG and Morris . Leyland diesel engines were used in Finnish Sisu and Vanaja lorries and buses in 1960s. The BLMC group
5530-472: Was available in day and sleeper cab form. Engines were decided from the outset to be in the higher power category to be competitive with rival vehicles. The only existing engine within the Leyland empire suitable for such an application (following the demise of the ill-fated fixed-head 500 series and AEC's underdeveloped and unreliable V8) was the AEC AV760 straight-six, which was turbocharged and designated as
5609-635: Was available with 5 or 8 horsepower (4 or 6 kW) engines. Another early American truck was built by George Eldridge of Des Moines, Iowa, in 1903. It was powered by an engine with two opposed cylinders, and had a chain drive A 1903 Eldridge truck is displayed at the Iowa 80 Trucking Museum, Walcott, Iowa. Trucks of the era mostly used two-cylinder engines and had a carrying capacity of 1.5 to 2 t (3,300 to 4,400 lb). After World War I, several advances were made: electric starters , and 4, 6, and 8 cylinder engines. Although it had been invented in 1897,
5688-535: Was difficult to manage because of the many companies under its control, often making similar products. This, and other reasons, led to financial difficulties and in December 1974 British Leyland had to receive a guarantee from the British government. In 1975, after the publication of the Ryder Report and the company's bankruptcy, BLMC was nationalised as British Leyland (BL) and split into four divisions with
5767-559: Was introduced in 1986, also designed for export markets mainly in the developing world. As such, it was a no-frills vehicle of a simple and sturdy design, with five- or six-speed transmissions rather than the multi-speed units used on European models. The cabin was a simplified all-steel version of that used by the Roadrunner, designed to enable local assembly. The three-axle version is called the Super Comet. Leyland Motors produced
5846-693: Was involved in war production. Leyland built the Cromwell tank at its works from 1943 as well as medium/large trucks such as the Hippo and Retriever . After the war, Leyland Motors continued military manufacture with the Centurion tank . In 1946, AEC and Leyland Motors formed British United Traction to build trolleybuses. In 1955, through an equity agreement, manufacture of commercial vehicles under licence from Leyland Motors commenced in Madras , India at
5925-565: Was later killed in an attempt on the land speed record when the car overturned. Rumours that a chain drive broke were found to be incorrect when the car was disinterred late in the 20th century as the chains were intact. At the other extreme, they also produced the Trojan Utility Car in the Kingston upon Thames factory at Ham from 1922 to 1928. Three generations of Spurriers controlled Leyland Motors from its foundation until
6004-534: Was launched, an updated and revised vehicle that attempted to address some of the previous criticisms of the earlier vehicle. Relatively few Marathons of all types were sold before production ended in 1979 with the introduction of the T45 "roadtrain" range of vehicles. This was Leyland's answer to the Ford cargo in the non-HGV 7.5-ton truck sector. Launched in 1984, it utilised a Leyland 698 straight-six engine until 1986, when
6083-567: Was renamed Leyland Motors in 1907 when it took over Coulthards of Preston , who had been making steam wagons since 1897. They also built a second factory in the neighbouring town of Chorley which still remains today as the headquarters of the Lex Autolease and parts company. In 1920, Leyland Motors produced the Leyland Eight luxury touring car, a development of which was driven by J.G. Parry-Thomas at Brooklands . Parry-Thomas
6162-568: Was replaced the tooling was shipped to Turkey, where BMC's Turkish subsidiary built it as the "BMC Yavuz" and then as the "Fatih" (with Cummins engines) from 1986 until 1996. The Marathon was Leyland's answer to the booming "max cap" truck fad at the start of the 1970s. Imports such as the Volvo F88 and Scania 110/140 were selling very well in the UK thanks to the previously unheard of levels of driver comfort, reliability, quality and performance. Leyland had insufficient money for development of
6241-561: Was steadily declining. The 1986 closure of Bedford Vehicles ' heavy truck plant further harmed Leyland, as they had been planning on selling axles and other components to the General Motors subsidiary. The bus operations was sold in a management buyout to form Leyland Bus , and was subsequently bought by Volvo in 1988, which then discontinued most of its product range but kept the Olympian . Volvo reengineered and renamed it as
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