SCOA-P Wheel
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SCOA-P Wheel
SCOA-P pattern wheels are a type of steam locomotive wheel. Rather than having traditional solid spokes, the SCOA-P spoke is hollow, with a 'U' shaped cross section. They are considerably lighter than a conventional spoked wheel or Boxpok wheel of the same size and strength. History SCOA-P wheels were developed in the late 1940s by the Steel Company of Australia Ltd (the P in the acronym standing for F. C. Paynter, who patented the design) in response to Victorian Railways experiencing fatigue problems with conventional spoked wheels. Stronger Boxpok type 'B' wheels had been installed on a number of VR locomotive classes in the late 1940s, but they had the disadvantage of being relatively heavy and also restricted maintenance access to axleboxes, underslung springs, and in some cases boiler washout plugs. Boxpok wheels were proposed for the forthcoming Victorian Railways R class 4-6-4, which had a relatively heavy axle load, but it had been discovered that the use of a Boxpok ...
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Victorian Railways J Class (1954)
The Victorian Railways J class was a branch line steam locomotive operated by the Victorian Railways (VR) between 1954 and 1972. A development of the successful Victorian Railways K class 2-8-0, it was the last new class of steam locomotive introduced on the VR. Introduced almost concurrently with the diesel-electric locomotives that ultimately superseded them, the locomotives were only in service for a relatively short time. History During the early 1950s, the Victorian Railways (VR) embarked on a massive upgrading of its ageing locomotive fleet as part of Operation Phoenix, an £80 million program to rebuild a network badly run down by years of underinvestment during the Great Depression, and the heavy workload imposed by World War II. Victoria's branch line railway network, laid with rail and featuring gradients of up to 1 in 30 (3.33 %), was still largely served by the D1, D2 and D3 variants of the once 261-strong 1902-era Dd class 4-6-0 which, by the early 1950s, were ...
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2-8-4
Under the Whyte notation, a 2-8-4 is a steam locomotive that has two unpowered leading wheels, followed by eight coupled and powered driving wheels, and four trailing wheels. This locomotive type is most often referred to as a Berkshire, though the Chesapeake and Ohio Railway used the name Kanawha for their 2-8-4s. In Europe, this wheel arrangement was mostly seen in mainline passenger express locomotives and, in certain countries, in tank locomotives. Overview In the United States of America, the 2-8-4 wheel arrangement was a further development of the enormously successful 2-8-2 Mikado. It resulted from the requirement for a freight locomotive with even greater steam heating capacity. To produce more steam, a solution was to increase the size of the locomotive's firebox, though the 2-8-2 wheel arrangement, with its single axle trailing truck, limited the permissible increased axle loading from a larger firebox. The most practical solution was to add a second trailing axle ...
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2-10-2
Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of two leading wheels, ten powered and coupled driving wheels, and two trailing wheels. In the United States of America and elsewhere the is known as the Santa Fe type, after the Atchison, Topeka and Santa Fe Railway that first used the type in 1903. Overview The wheel arrangement evolved in the United States from the 2-10-0 Decapod of the Atchison, Topeka and Santa Fe Railway (ATSF). Their existing 2-10-0 tandem compound locomotives, used as pushers up Raton Pass, encountered problems reversing back down the grade for their next assignments since they were unable to track around curves at speed in reverse and had to run very slowly to avoid derailing. Consequently, the ATSF added a trailing truck to the locomotives which allowed them to operate successfully in both directions. These first locomotives became the forerunners to the entire family. The trailing truck allows a ...
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Vulcan Foundry
The Vulcan Foundry Limited was an English locomotive builder sited at Newton-le-Willows, Lancashire (now Merseyside). History The Vulcan Foundry opened in 1832, as Charles Tayleur and Company to produce girders for bridges, switches, crossings and other ironwork following the opening of the Liverpool and Manchester Railway. Due to the distance from the locomotive works in Newcastle-upon-Tyne, it seemed preferable to build and support them locally. In 1832, Robert Stephenson became a partner for a few years. The company had become The Vulcan Foundry Company in 1847 and acquired limited liability in 1864. From the beginning of 1898, the name changed again to The Vulcan Foundry Limited, dropping the word 'company.' Vulcan Halt The site had its own railway station, Vulcan Halt, on the former Warrington and Newton Railway line from to . The wooden-platformed halt was opened on 1 November 1916 by the London and North Western Railway, and closed on 12 June 1965. Steam locomotive ...
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4-8-2
Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels, eight powered and coupled driving wheels and two trailing wheels. This type of steam locomotive is commonly known as the Mountain type. Overview The Colony of Natal in South Africa and New Zealand were innovators of the Mountain wheel arrangement. The Natal Government Railways (NGR) placed in service the first tank engines with the 4-8-2 arrangement, and the NGR was also first to modify tender locomotives to use a 4-8-2 wheel arrangement. The New Zealand Railways Department (NZR) introduced the first tender locomotives designed and built as 4-8-2. In 1888, the Natal Government Railways placed the first five of its eventual one hundred Class D tank locomotives in service. The locomotive was designed by William Milne, the locomotive superintendent of the NGR from 1877 to 1896, and was built by Dübs & Company. This was the first known use of the w ...
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Tasmanian Government Railways H Class (1951)
The Tasmanian Government Railways H class was a class of 4-8-2 steam locomotives operated by the Tasmanian Government Railways. History In October 1951, the Tasmanian Government Railways (TGR) took delivery of eight H locomotives from the Vulcan Foundry, Newton-le-Willows built at the same time and basic design as the Gold Coast Railway '248' class in Ghana. They were delivered in a new emerald green livery. Four were later repainted red. As they fell due for overhaul, withdrawals began in 1961. H2 received a major overhaul in 1966-7, the last of the class to receive such work. Two (H2 and H5) partook in the Centenary of Rail in Tasmania celebrations in February 1971: H5 was withdrawn after this but H2 worked periodically before being finally withdrawn in 1975. All remained in store until disposed of between 1974 and 1978. Preservation *H1 at the Tasmanian Transport Museum, Glenorchy *H2 at the Derwent Valley Railway *H5 at the Derwent Valley Railway *H6 plinthed in Pe ...
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Tasmanian Government Railways M Class (1952)
The Tasmanian Government Railways M class is a class of 4-6-2 steam locomotives operated by the Tasmanian Government Railways. History On 12 March 1952, the Tasmanian Government Railways (TGR) took delivery of ten M class branch line locomotives from Robert Stephenson and Hawthorns, Newcastle-upon-Tyne. The locomotives were similar to the Indian Railways YB class. They were allocated to operate on the North-Eastern and Western lines and at Hobart. However with the TGR having already commenced dieselisation with the X class, some of the lines intended for M class operation had already been converted. Hence in 1957, four were fitted with smaller driving wheels recovered from withdrawn Australian Standard Garratt The Australian Standard Garratt (ASG) was a Garratt steam locomotive designed in Australia during World War II, and used on narrow gauge railway systems in Queensland, South Australia, Western Australia and Tasmania. History With the outbreak ...s enabling them t ...
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Tasmanian Government Railways
The Tasmanian Government Railways (TGR) was the former operator of the mainline railways in Tasmania, Australia. Formed in 1872, the railway company was managed by the Government of Tasmania, and existed until absorption into the Australian National Railways Commission in 1978. History Precursor Launceston & Western Railway The early railways of Tasmania were constructed by a number of private companies, rather than owned by the Government. Proposals were considered by the Tasmanian Government for the construction of a railway from Hobart to Launceston as early as 1856, when the colony gained responsible government. In June 1857, railway committees were formed in Deloraine, Carrick, Longford, Perth and Westbury, to lobby for the construction of a railway between Launceston and Deloraine. Delegations from these committees were successful in lobbying the Mayor of Launceston to organise a meeting on the issue on 27 August, with discussions around the need for a railway to ...
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4-6-2
Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles, six powered and coupled driving wheels on three axles and two trailing wheels on one axle. The locomotive became almost globally known as a Pacific type. Overview The introduction of the design in 1901 has been described as "a veritable milestone in locomotive progress". On many railways worldwide, Pacific steam locomotives provided the motive power for express passenger trains throughout much of the early to mid-20th century, before either being superseded by larger types in the late 1940s and 1950s, or replaced by electric or diesel-electric locomotives during the 1950s and 1960s. Nevertheless, new Pacific designs continued to be built until the mid-1950s. The type is generally considered to be an enlargement of the Atlantic type, although its prototype had a direct relationship to the Ten-wheeler and Prairie, effectively bei ...
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Queensland BB18¼ Class Locomotive
The Queensland Railways BB18¼ class locomotive was a class of 4-6-2 steam locomotives operated by the Queensland Railways. History The first 35 BB18¼ class locomotives were built by the Vulcan Foundry in Newton-le-Willows, England in 1950/51. Per Queensland Railway's classification system they were designated the BB18¼ class, BB representing they had three driving axles, and the 18¼ the cylinder diameter in inches. A further 20 built by Walkers Limited, Maryborough between 1955 and 1958. No. 1089 was the last steam engine placed into service on a mainline Australian railway. Their route availability was always the same as for the BB18¼ and C19. The extremities of that availability when they were introduced were (from Brisbane) Roma, Wallan-garra, Merinda (near Bowen), plus branches Bundamba to 3 miles 8 chains (on loop to Redbank), Gowrie to Wyreema loop, Warwick to Thane (South-Western Line), Ipswich to Workshops Gate, South Brisbane to Lota, Kuraby and Corinda, Sho ...
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Queensland Rail
Queensland Rail (QR) is a railway operator in Queensland, Australia. Owned by the Queensland Government, it operates local and long-distance passenger services, as well as owning and maintaining approximately 6,600 kilometres of track and related infrastructure. QR was also responsible for all Queensland freight services, and from 2002 operated interstate services under the Australian Railroad Group, Interail and QR National brands. These were all spun out into a separate entity in July 2010, and later privatised as Aurizon. History Beginnings Queensland Railways was the first operator in the world to adopt narrow gauge (in this case ) for a main line, and this remains the systemwide gauge within Queensland today. The colony of Queensland separated from New South Wales in 1859, and the new government was keen to facilitate development and immigration. Improved transport to the fertile Darling Downs region situated west of Toowoomba was seen as a priority. As adequate ri ...
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