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2-6-6-2
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a is a locomotive with one pair of unpowered leading wheels, followed by two sets of three pairs of powered driving wheels and one pair of trailing wheels. The wheel arrangement was principally used on Mallet-type articulated locomotives, although some tank locomotive examples were also built. A Garratt type locomotive with the same wheel arrangement is designated . Under the UIC classification the wheel arrangement is referred to as (1'C)C1' for Mallet locomotives. Overview The 2-6-6-2 wheel arrangement was most often used for articulated compound steam Mallet locomotives. In a compound Mallet, the rear set of coupled wheels are driven by the smaller high pressure cylinders, from which spent steam is then fed to the larger low pressure cylinders that drive the front set of coupled wheels. Compounding Steam Engines This type of locomotive was commonly used in North America on logging rail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-6-6-2
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a is a locomotive with one pair of unpowered leading wheels, followed by two sets of three pairs of powered driving wheels and one pair of trailing wheels. The wheel arrangement was principally used on Mallet-type articulated locomotives, although some tank locomotive examples were also built. A Garratt type locomotive with the same wheel arrangement is designated . Under the UIC classification the wheel arrangement is referred to as (1'C)C1' for Mallet locomotives. Overview The 2-6-6-2 wheel arrangement was most often used for articulated compound steam Mallet locomotives. In a compound Mallet, the rear set of coupled wheels are driven by the smaller high pressure cylinders, from which spent steam is then fed to the larger low pressure cylinders that drive the front set of coupled wheels. Compounding Steam Engines This type of locomotive was commonly used in North America on logging rail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mallet Locomotive
The Mallet locomotive is a type of articulated steam railway locomotive, invented by the Swiss engineer Anatole Mallet (1837–1919). The front of the locomotive articulated on a bogie. The compound steam system fed steam at boiler pressure to high-pressure cylinders driving the rear set of driving wheels (rigidly connected to the boiler). The exhaust steam from these cylinders was fed into a low-pressure receiver and was then sent to low-pressure cylinders that powered the driving wheels on the swiveling bogie towards the front of locomotive. Compounding Steam under pressure is converted into mechanical energy more efficiently if it is used in a compound engine; in such an engine steam from a boiler is used in high-pressure (HP) cylinders and then under reduced pressure in a second set of cylinders. The lower-pressure steam occupies a larger volume and the low-pressure (LP) cylinders are larger than the high-pressure cylinders. A third stage (triple expansion) may be empl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class MG 2-6-6-2
The South African Railways Class MG 2-6-6-2 of 1911 was a steam locomotive from the pre-Union era in Transvaal. In 1911, the Central South African Railways placed an experimental Mallet articulated compound steam locomotive with a wheel arrangement in service. In 1912, when it was assimilated into the South African Railways, it was renumbered and designated the sole member of Class MG.Espitalier, T.J.; Day, W.A.J. (1945). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways.'' South African Railways and Harbours Magazine, April 1945. pp. 275-276.Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 9, 12, 16, 47 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000) Manufacturer A single experimental locomotive was included with the order for nine Class MF Mallet articulated compound steam locomotives which were delivered to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chesapeake And Ohio 1309
Western Maryland Scenic Railroad 1309 is a compound articulated class "H-6" "Mallet" type steam locomotive with a 2-6-6-2 (Whyte notation) wheel arrangement. It was built by the Baldwin Locomotive Works in 1949 and originally operated by the Chesapeake and Ohio Railway (C&O) where it pulled coal trains until its retirement in 1956. In 1972, No. 1309 was moved to the B&O Railroad Museum for static display until 2014 when it was purchased by the Western Maryland Scenic Railroad (WMSR), who undertook a multi-year effort to restore it to operating condition. The restoration was completed on December 31, 2020, and the locomotive entered tourist excursion service for the WMSR on December 17, 2021. This was the first time an articulated locomotive operated in the eastern United States since the retirement of Norfolk and Western 1218 in 1991. History Revenue service Chesapeake & Ohio Railway No. 1309 was built by Baldwin Locomotive Works in November 1949. It was the last Class 1 mainline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class MF 2-6-6-2
The South African Railways Class MF 2-6-6-2 of 1911 was a steam locomotive from the pre-Union era in Transvaal. In 1911, the Central South African Railways placed nine Mallet articulated compound steam locomotives with a wheel arrangement in service. In 1912, when they were assimilated into the South African Railways, they were renumbered and designated Class MF. Five more of these locomotives were delivered in November 1911 and were numbered directly onto the South African Railways roster.Espitalier, T.J.; Day, W.A.J. (1945). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways.'' South African Railways and Harbours Magazine, April 1945. pp. 275-276.Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 9, 12, 16, 47 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000) Manufacturer Nine Mallet articulated compound steam loco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class MD 2-6-6-2
The South African Railways Class MD 2-6-6-2 of 1910 was a steam locomotive from the pre-Union era in Transvaal. In March 1910, the Central South African Railways commissioned a single experimental Mallet articulated compound steam locomotive with a wheel arrangement. In 1912, when the locomotive was assimilated into the South African Railways, it was renumbered and designated .Espitalier, T.J.; Day, W.A.J. (1945). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VI - Imperial Military Railways and C.S.A.R.'' (Continued). South African Railways and Harbours Magazine, March 1945. pp. 181-183.Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 9, 12, 15, 46 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000) Manufacturer The first Mallet articulated compound steam locomotive on the Central South African Railways (CSAR) was ordered for test purposes from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class MH 2-6-6-2
The South African Railways Class MH 2-6-6-2 of 1915 was an articulated Mallet-design steam locomotive. In 1915, the South African Railways placed five Class MH Mallet articulated compound steam locomotives with a 2-6-6-2 wheel arrangement in coal hauling service.Espitalier, T.J.; Day, W.A.J. (1945). ''The Locomotive in South Africa – A Brief History of Railway Development. Chapter VII – South African Railways (Continued).'' South African Railways and Harbours Magazine, May 1945. pp. 350, 356. Manufacturer During 1914, the requirement for locomotives with a high tractive effort to cope with the increasing volume of coal traffic between Witbank and Germiston led to the introduction of a heavy Mallet compound superheated engine with a 2-6-6-2 wheel arrangement. The Class MH Mallet articulated locomotive was designed in detail in the locomotive drawing office in Pretoria under the personal direction of D.A. Hendrie, Chief Mechanical Engineer (CME) of the South African Railwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Class ME 2-6-6-2
The South African Railways Class ME 2-6-6-2 of 1912 was a steam locomotive. In January 1912, the South African Railways placed a single Class ME Mallet articulated steam locomotive with a 2-6-6-2 wheel arrangement in service.Espitalier, T.J.; Day, W.A.J. (1945). ''The Locomotive in South Africa - A Brief History of Railway Development. Chapter VII - South African Railways (Continued).'' South African Railways and Harbours Magazine, May 1945. pp. 347-348.Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 9, 12, 15, 46 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000) Manufacturer During 1911, the Central South African Railways (CSAR) placed an order for a single experimental simple expansion Mallet articulated steam locomotive with the North British Locomotive Company (NBL). The locomotive was intended for test purposes on branch lines with light rail.North British Locomotive Company ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garratt
A Garratt (often referred to as a Beyer Garratt) is a type of steam locomotive invented by British engineer Herbert William Garratt that is articulated into three parts. Its boiler, firebox, and cab are mounted on a centre frame or "bridge". The two other parts, one at each end, have a pivot to support the central frame; they consist of a steam engine unit – with driving wheels, trailing wheels, valve gear, and cylinders, and above it, fuel and/or water storage. Articulation permits locomotives to negotiate curves that might restrict large rigid-framed locomotives. The design also provides more driving wheels per unit of locomotive weight, permitting operation on lightly engineered track. Garratt locomotives produced as much as twice the power output of the largest conventional locomotives of railways that introduced them, reducing the need for multiple locomotives and crews. Advantages of the Garratt concept The principal benefit of the Garratt design is that the boil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whyte Notation
Whyte notation is a classification method for steam locomotives, and some internal combustion locomotives and electric locomotives, by wheel arrangement. It was devised by Frederick Methvan Whyte, and came into use in the early twentieth century following a December 1900 editorial in ''American Engineer and Railroad Journal''. The notation was adopted and remains in use in North America and the United Kingdom to describe the wheel arrangements of steam locomotives (in the latter case also for diesel and electric locomotives), but for modern locomotives, multiple units and trams it has been supplanted by the UIC system in Europe and by the AAR system (essentially a simplification of the UIC system) in North America. Structure of the system Basic form The notation in its basic form counts the number of leading wheels, then the number of driving wheels, and finally the number of trailing wheels, numbers being separated by dashes. For example, a locomotive with two leadi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norfolk And Western Railway
The Norfolk and Western Railway , commonly called the N&W, was a US class I railroad, formed by more than 200 railroad mergers between 1838 and 1982. It was headquartered in Roanoke, Virginia, for most of its existence. Its motto was "Precision Transportation"; it had a variety of nicknames, including "King Coal" and "British Railway of America". In 1986, N&W merged with Southern Railway to form today’s Norfolk Southern Railway. The N&W was famous for manufacturing its own steam locomotives, which were built at the Roanoke Shops, as well as its own hopper cars. After 1960, N&W was the last major Class I railroad using steam locomotives; the last remaining Y class 2-8-8-2s would eventually be retired between 1964 and 1965. In December 1959, the N&W merged with the Virginian Railway (reporting mark VGN), a longtime rival in the Pocahontas coal region. By 1970, other mergers with the Nickel Plate Road and Wabash formed a system that operated of road on of track from North C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Maryland Scenic Railroad
The Western Maryland Scenic Railroad (WMSR) is a heritage railroad based in Cumberland, Maryland, that operates passenger excursion trains and occasional freight trains using both steam and diesel locomotives over ex-Western Maryland Railway (WM) tracks between Cumberland and Frostburg. The railroad offers coach and first class service, murder mystery excursions, and special seasonal trips. Rail line history and description The Western Maryland (WM) was a railroad that served Cumberland, Maryland, along with a branch line that ran between there and Frostburg, as well as stretching to other small towns, like Hancock and Connellsville.. In 1973, the WM joined the Baltimore and Ohio and Chesapeake and Ohio railroads to group into the Chessie System, which would eventually be completely merged into the new CSX transportation system. The Cumberland-Frostburg branch was subsequently abandoned. In the late 1980s, the city of Cumberland started seeing the old branch line as a possible t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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