Under the Whyte notation for the classification of steam locomotives, 2-6-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles, and no trailing wheels. This arrangement is commonly called a Mogul.
Other equivalent classifications are:
- UIC classification: 1C (also known as German and Italian classifications)
- French classification: 130
- Turkish classification: 34
- Swiss classification: 3/4
- Russian classification: 1-3-0
In the United States of America (USA) and Europe the 2-6-0 wheel arrangement was principally used on tender locomotives. This type of locomotive was widely built in the USA from the early 1860s to the 1920s.
Although examples were built as early as 1852–53 by two Philadelphia manufacturers, Baldwin Locomotive Works and Norris Locomotive Works, these first examples had their leading axles mounted directly and rigidly on the frame of the locomotive, rather than on a separate truck or bogie. On these early 2-6-0 locomotives the leading axle was merely used to distribute the weight of the locomotive over a larger number of wheels. It was therefore essentially an 0-8-0 with an unpowered leading axle and the leading wheels did not serve the same purpose as, for example, the leading trucks of the 4-4-0 American or 4-6-0 Ten-Wheeler types that, at the time, had been in use for at least a decade.
The first American 2-6-0 with a rigidly mounted leading axle was the "Pawnee", built for heavy freight service on the Philadelphia and Reading Rail Road. In total, about thirty locomotives of this type were built for various American railroads. While they were generally successful in slow, heavy freight service, the railroads that used these first 2-6-0 locomotives didn't see any great advantages in them over the 0-6-0 or 0-8-0 designs of the time. The railroads noted their increased pulling power, but also found that their rather rigid suspension made them more prone to derailments than the 4-4-0 locomotives of the day. Many railroad mechanics attributed these derailments to having too little weight on the leading truck.
The first true 2-6-0s were built in the early 1860s, the first few being built in 1860 for the Louisville and Nashville Railroad. The new design required the utilisation of a single-axle swivelling truck. Such a truck was first patented in Great Britain by Levi Bissell in May 1857.
In 1864 William S. Hudson, then the superintendent of Rogers Locomotive and Machine Works, patented an equalized leading truck that was able to move independently of the driving axles. This equalized suspension worked much better over the uneven tracks of the day. The first locomotive built with such a leading truck was likely completed in 1865 for the New Jersey Railroad and Transportation Company as their number 39.
It is likely that the locomotive class name derives from a locomotive that was named "Mogul", built by Taunton Locomotive Manufacturing Company in 1866 for the Central Railroad of New Jersey. However, it has also been suggested that, in England, it derived from the engine of that name built by Neilson and Company for the Great Eastern Railway in 1879.
Altogether twenty 2-6-0 locomotives were built by Les Ateliers de Tubize locomotive works in Belgium for the 1,000 mm (3 ft 3 3⁄8 in) metre gauge CF du Congo Superieur aux Grands Lacs Africains (CFL) between 1913 and 1924. The first eight, numbered 27 to 34, were built in 1913, followed by six more in 1921, numbered 35 to 40. Six more of a slightly larger version followed in 1924, numbered 41 to 46. They had 360 by 460 millimetres (14 by 18 inches) cylinders and 1,050 millimetres (41 inches) diameter driving wheels, with the smaller versions having a working order mass of 28.8 tonnes (28.3 long tons; 31.7 short tons) and the larger versions 33.4 tonnes (32.9 long tons; 36.8 short tons). Most of the CFL was regauged to 3 ft 6 in (1,067 mm) gauge in 1955, as were all of the serving Moguls. Most of them still survived in 1973.
A large number of 2-6-0 locomotives were used in Canada, where they were considered more usable in restricted spaces, being shorter than the more common 4-6-0 Ten-Wheelers. The Canadian National Railway (CN) had several. One of them, the CN number 89, an E-10-a class locomotive built by Canadian Locomotive Company in 1910, has been owned and operated since 1972 by the Strasburg Rail Road in Pennsylvania in the United States of America, in conjunction with the Railroad Museum of Pennsylvania. A good preserved version (White Pass and Yukon Railroad no. 51) can be found at the MacBride Museum of Yukon History in Whitehorse, Yukon.
Finland’s 2-6-0 locomotives were the Classes Sk1, Sk2, Sk3, Sk4, Sk5 and Sk6.
Finnish Steam Locomotive Class Sk1s were built from 1885 by Swiss Locomotive and Machine Works. They carried numbers 117 to 131, 134 to 149, 152 to 172 and 183 to 190. These locomotives were nicknamed “Little Brown”.
Finnish Steam Locomotive Class Sk3s were built from 1903 by Tammerfors Linne & Jern Manufakt. A.B. They were numbered 173 to 177, 191 to 195, 214 to 221, 334 to 359, 373 to 406 and 427 to 436. These locomotives were nicknamed “Grandmothers”
The Staatsspoorwegen (SS) in Indonesia operated eighty-three 2-6-0T tank locomotives of the C12 series, built by Sächsische Maschinenfabrik of Chemnitz, Germany in 1896. They were wood burning locomotives which consumed two cubic meters of wood and 3,500 litres (770 imperial gallons; 920 US gallons) of water for 4½ hours of steam production.
Of these locomotives, forty-three survived the invasion by Japan during World War II and were still being operated following independence from the Netherlands. They were based in Cepu in Indonesia and were used on the Cepu-Blora-Purwodadi-Semarang-Bojonegoro-Jatirogo route, now closed.
By the early 1980s the survivors of the class were in poor condition. One example, C1218 no. 457, was revived in 2002 after twenty-five years, in Dipo in Ambarawa. By mid-2006 it was operational, and since 2009 it was moved to Solo in Central Java to haul a chartered steam train across the main street of the town.
The Class J of the New Zealand Railways Department (NZR) was its pioneering tender freight locomotive, introduced in 1877 for use in the re-gauged Canterbury region of the South Island. Built by the Avonside Engine Company and other locomotive works in the United Kingdom, they were shipped to New Zealand in kit form. Eventually they served all over New Zealand's fledgling rail network on both islands. In time they were replaced on mainline running as larger power arrived. Many survived into the 1920s as yard shunters and some were converted to tank locomotives.
In 1876 and 1877 the Cape Government Railways (CGR) placed eighteen Mogul locomotives in freight service on the Cape Western system, built by Beyer, Peacock and the Avonside Engine Company. They were designated 1st Class when a classification system was adopted. By 1912 three of them survived to be considered obsolete by the South African Railways (SAR), designated Class 01 and renumbered by having the numeral 0 prefixed to their existing numbers. All were withdrawn from service by 1916.:28-29
The CGR placed a pair of Stephenson's Patent back-to-back Mogul type side-tank locomotives in service on the Cape Midland system, built by Kitson. They were later separated and rebuilt to saddle-tank locomotives for use as shunting engines. When a classification system was introduced, they were designated 1st Class.:118-121:94-95
Also in 1876 and 1877, the CGR placed eight Mogul tender locomotives in service on the Cape Midland system, also built by Kitson and Company. They were all eventually rebuilt to saddle-tank locomotives for use as shunting engines. When a classification system was adopted, they were also designated 1st Class.:28:118-121
In 1877 Whythes & Jackson Limited, contracted by the Natal government for the construction of the line from Durban to Pietermaritzburg, took delivery of two 2-6-0 tank locomotives from Kitson and Company for use during construction. The locomotives were not numbered, but were appropriately named Durban and Pietermaritzburg after the two towns that were to be connected by the new railway line. Upon completion of the construction contract at the end of 1880, the locomotives were taken over by the Natal Government Railways (NGR) and in 1893 they were sold to the Selati Railway.:84–85, 121
In 1877 and 1878 seven Mogul tank locomotives were also delivered to the NGR by BP, built to the same design as the two contractor's locomotives. Later classified as NGR Class K, they were the first locomotives to be ordered for use on the then newly laid Cape gauge Natal mainline into the interior. One was sold to the East Rand Proprietary Mines and two came into SAR stock in 1912, but remained unclassified as "NGR 2-6-0T Beyer Peacock Sidetank". Although they were considered obsolete, they remained in service as late as 1931.:20–21:18
In 1879 and 1880 the CGR placed ten Moguls, built by Beyer, Peacock and Company, in freight service on the Cape Western system. While similar to the locomotives of 1876, their cylinders were mounted at a downward inclination towards the driving wheelset. They were also designated 1st Class when a classification system was adopted on the CGR.:28-30, 106
In 1879 the NGR placed seven 2-6-0T locomotives in service. They were subsequently modified to a 4-6-0T wheel arrangement and were designated NGR Class G. In 1912, when fifteen of them were assimilated into the South African Railways, they were renumbered and reclassified to Class C.
In 1891 the CGR placed two Baldwin-built 2-6-0 Mogul locomotives in freight service, the first American locomotives to enter service in South Africa. They were originally designated 5th Class, but the classification was later changed to 1st Class. One of them still survived in 1912 and was also designated Class 01 by the SAR. It was withdrawn from service in 1920.:40-41:15
In 1900, while the second South African War was still in progress, four 2-6-0T locomotives arrived in the Cape Colony, built by the Dickson Manufacturing Company in 1899. Since they bore cab side-plates inscribed "SS-ZAR" and were named "J.S. Smit", "J.J. Spier", "L.S. Meyer" and "C. Birkenstock", they were apparently intended for the Nederlandsche-Zuid-Afrikaansche Spoorweg-Maatschappij (NZASM) in the Zuid-Afrikaansche Republiek (ZAR). They were diverted to Indwe Collieries in the Cape Colony and when the CGR later took control of the colliery line, these locomotives were classified as part of the CGR 3rd Class. All four survived to come into SAR stock in 1912, when they were classified as Class O3. They were withdrawn by 1915.
In 1902 the Zululand Railway Company, contractors for the construction of the North Coast line from Verulam to the Tugela River, acquired two 2-6-0 tender locomotives as construction engines. Upon completion of the line in 1903, the locomotives were taken onto the roster of the Natal Government Railways and designated Class I.:96–97
Between 1902 and 1904 eleven Mogul saddle tank locomotives, built by Hunslet Engine Company, were delivered to the Table Bay Harbour Board. All were taken onto the Cape Government Railways roster in 1908 and came into SAR stock in 1912, but were considered obsolete and remained unclassified.:24-25:124:11–13, 16, 47
In 1902 the CGR placed three steam locomotives with a Mogul wheel arrangement in service on the Hopefield 2 ft (610 mm) narrow gauge branch line that was being constructed from Kalbaskraal. They were built by Baldwin and were of a standard type that was being used on the narrow gauge railroads of Maine in the United States. A fourth locomotive, identical to the first three, was ordered from the same manufacturer in 1911.:11–13, 16, 47
In 1912, when these locomotives were assimilated into the South African Railways, they were renumbered with an "NG" prefix to their running numbers. When a system of grouping narrow gauge locomotives into classes was eventually introduced somewhere between 1928 and 1930, they were to be classified as Class NG7 but had already been withdrawn from service.:11–13, 16, 47
In the United Kingdom, where locomotives are generally smaller than in the United States of America, the 2-6-0 was found to be a good wheel arrangement for mixed-traffic locomotives.
Circa 1870 one 2-6-0T tank engine was built for the Garstang and Knot-End Railway. The first unsuccessful examples were fifteen locomotives built to a design of William Adams for the Great Eastern Railway in 1878-79.
The Midland and South Western Junction Railway acquired two examples built to an Australian design by Beyer, Peacock and Company in 1895 and 1897. In 1899 the Midland Railway (MR), the Great Northern Railway (GNR) and the Great Central Railway all purchased examples from the Baldwin Locomotive Works in the United States. The MR also bought ten from the Schenectady Locomotive Works at the same time.
At the time of the Railways Act 1921 Grouping in 1923, 2-6-0 locomotives were operated by the Caledonian Railway (34 class, 1912), the Glasgow and South Western Railway (403 class, 1915), the GNR (H2, H3 and H4 classes, 1920), the Great Western Railway (2600 and 4300 classes of 1900 and 1911 respectively), the London Brighton and South Coast Railway (K class, 1913) and the South Eastern and Chatham Railway (N class, 1922).
Several of these designs continued to be built by the Big Four British railway companies after 1923, and several new and successful designs were introduced so that the 2-6-0 became the principal type for medium-loaded mixed traffic duties. Notable new designs included the Southern Railway’s U class (1928), the London Midland and Scottish Railway’s LMS Hughes Crab (1926), the LMS Stanier Mogul (1934), the LMS Ivatt Class 2 2-6-0 (1946), the LMS Ivatt Class 4 (1947), the London and North Eastern Railway’s LNER Class K4 (1937) and the LNER Thompson/Peppercorn Class K1 class which were built in 1949-50 after the nationalisation of British Railways.
British Railways continued to build the Ivatt and Thompson/Peppercorn designs and then introduced three standard designs, based on the Ivatt classes. These were the BR Standard Class 2 2-6-0 in 1952, the BR Standard Class 3 2-6-0 in 1954 and the BR Standard Class 4 2-6-0 in 1952. 2-6-0 locomotives continued to be built until 1957 and the last ones were withdrawn from service in 1968.
United States of America
The New Jersey Locomotive and Machine Company built their first 2-6-0 in 1861, as the "Passaic" for the Central Railroad of New Jersey. The Erie Railroad followed in 1862 with the first large order of this locomotive type. In 1863, Rogers Locomotive and Machine Works built what some cite as the first true 2-6-0 built in the United States, for the New Jersey Railroad and Transportation Company.
The Baltimore and Ohio Railroad (B&O) number 600, a 2-6-0 Mogul built at the B&O's Mount Clare Shops in 1875, won first prize the following year at the 1876 Centennial Exposition in Philadelphia. It is preserved at the B&O Railroad Museum, housed in the former Mount Clare shops in Baltimore.
Very few of these classic steam locomotives still exist, most of them having been scrapped as newer, faster, and more powerful steam engines were developed in the twentieth century. The USRA standard designs of 1914 did not include a 2-6-0.
Four notable 2-6-0 locomotives are still in operation in the United States.
- Ex Southern Pacific Lines No. 1744 still operated on the Heber Valley Historic Railroad in 1982.
- Ex New Berlin & Winfield Railroad No. 2, built by Baldwin Locomotive Works in 1906, was rebuilt and is maintained by the Midwest Central Railroad.
- Walt Disney World Railroad locomotive No. 2 "Lilly Belle", built in 1928, operates on the railroad circling the Magic Kingdom in Orlando, Florida.
- Ex Canadian National No. 89 operates in excursion service on the Strasburg Rail Road
Preserved non-operating examples include:
- The Southern Pacific Railroad no. 1785, located in Woodburn, Oregon.
- The Virginia and Truckee Railroad no. 13, "Empire", at the California State Railroad Museum in Sacramento, California.
- The Duluth and Iron Range Railroad no. 3 in Two Harbors, Minnesota.
- The Boston and Maine Railroad no. 1455 at the Danbury Railway Museum in Danbury, Connecticut. This was the last steam locomotive to regularly operate on the Boston and Maine Railroad in 1956.
- White, John H., Jr. (1968). A history of the American locomotive; its development: 1830-1880. New York, NY: Dover Publications. pp. 62-65. ISBN 0-486-23818-0
- Hunt, David (1997). Supplement No. 1 - American Locomotives of the Midland Railway. Midland Record. Didcot: Wild Swan. pp. 15, 17. ISBN 1-874103-41-0.
- Continental Railway Journal No.19, published by the Continental Railway Circle in the UK
- Railways of the Congo, compiled and published by Reg Carter, UK, revised edition, June 2000
- Canadian National Railways Steam Locomotive Roster
- Strasburg Rail Road Today
- The NZR Steam Locomotive, Sean Miller, 2011, ISBN 978-0-908573-89-9
- Holland, D.F. (1971). Steam Locomotives of the South African Railways, Volume 1: 1859-1910 (1st ed.). Newton Abbott, Devon: David & Charles. ISBN 978-0-7153-5382-0.
- Dulez, Jean A. (2012). Railways of Southern Africa 150 Years (Commemorating One Hundred and Fifty Years of Railways on the Sub-Continent - Complete Motive Power Classifications and Famous Trains - 1860-2011) (1st ed.). Garden View, Johannesburg, South Africa: Vidrail Productions. p. 36. ISBN 9 780620 512282.
- Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. ISBN 0869772112.:16
- C.G.R. Numbering Revised, Article by Dave Littley, SA Rail May-June 1993, pp. 94-95.
- Holland, D.F. (1972). Steam Locomotives of the South African Railways, Volume 2: 1910-1955 (1st ed.). Newton Abbott, Devon: David & Charles. ISBN 978-0-7153-5427-8.
- Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, p. 18 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)
- NGR Class G numbering
- Baxter, Bertram (1977). British locomotive catalogue 1825-1923. Moorland. p. 30.
- Casserley, H.C. (1960). The historic locomotive pocketbook. Batsford. pp. 164–165.
- Lowe, J.W. (1989). British Steam Locomotive Builders. Guild Publishing.
- "Save America's Treasures" (B&O Railroad Museum), December 2009.
- Kinert, Reed (1962). Early American steam locomotives; 1st seven decades: 1830-1900. Superior Publishing Company, Seattle, WA.
- History of MCRR