Under the Whyte notation for the classification of steam locomotives, 0-6-0+0-6-0 represents the wheel arrangement of an articulated locomotive with two separate engine units, each unit with no leading wheels, six powered and coupled driving wheels on three axles and no trailing wheels. The arrangement is effectively two 0-6-0 locomotives operating back-to-back and was used on Garratt, Fairlie, Meyer and Kitson-Meyer articulated locomotives. A similar arrangement exists for Mallet steam locomotives, but these are referred to as 0-6-6-0.
In the United Kingdom, the Whyte notation of wheel arrangement was also often used for the classification of electric and diesel-electric locomotives with side-rod coupled driving wheels.
Other equivalent classifications are:
- UIC classification: C+C (also known as German and Italian classifications)
- French classification: 030+030
- Turkish classification: 33+33
- Swiss classification: 3/3+3/3 up to the early 1920s, later 6/6
The 0-6-0+0-6-0 was a rare Garratt model. Beyer, Peacock, the owner of the Garratt patent, only built two of this type to 2 ft 6 in (762 mm) gauge for the Buthidaung-Maungdaw Tramway in Burma. Belgian builder Société Anonyme St. Leonard of Liège constructed 31 for the Belgian Congo and two for the roadside tramways of the Belgian SNCV. Hanomag commenced the construction of a single locomotive, which was completed by Henschel for the Limburg Tramway in the Netherlands. This last was the only inside-cylinder Garratt built.
|750 mm||C.F. du Congo||1744||1||1913||St. Leonard, Belgium|
|750 mm||C.F. du Congo||1901-1912||12||1920-21||St. Leonard, Belgium|
|750 mm||C.F. du Congo||2001-2009||9||1924-25||St. Leonard, Belgium|
|750 mm||C.F. du Congo||2040-2049||10||1925-26||St. Leonard, Belgium|
|2 ft 6 in||Buthidaung-Maungdaw Tramway, Burma||5702-5703||2||1913||Beyer, Peacock|
|1,000 mm||SNCV, Belgium||Type 23||2121||1||1929||St. Leonard, Belgium|
|1,000 mm||SNCV, Belgium||Type 23||2140||1||1930||St. Leonard, Belgium|
|4 ft 8 1⁄2 in||Limburg Tramway, the Netherlands||22063||1||1931||Hanomag & Henschel|
In 1894, Kitson and Company of Leeds built a modified Meyer articulated locomotive of this wheel arrangement for the Anglo-Chilean Nitrate and Railway Company. Thereafter, the Kitson-Meyer type was widely used in South America, particularly on the Colombian and Chilean railways. The four which were built for Southern Africa were not successful.
Between 1913 and 1926, Belgian locomotive builders Société Anonyme St. Leonard of Liège constructed 31 Garratt 0-6-0+0-6-0 locomotives for the 750 mm (2 ft 5 1⁄2 in) gauge Compagnie du C.F. du Congo in the Belgian Congo. The locomotives were delivered in four batches, one in 1913, twelve in 1920-21, eight in 1924-25 and the last ten in 1925-26.
In 1876, the Cape Government Railways (CGR) placed a single experimental Fairlie side-tank locomotive in service on the Cape Eastern system, working out of East London. Built by Avonside Engine Company, it was the first articulated locomotive to enter service in South Africa and also the first locomotive to be equipped with Walschaerts valve gear. After some shortcomings were brought to the attention of the locomotive builders, a second Fairlie which incorporated these improvements was delivered and placed in service in 1878.
The Kitson-Meyer type was tried out by three railways in Southern Africa. In 1903, Kitson persuaded the CGR, the Beira and Mashonaland Railway (B&MR) and the Central South African Railways (CSAR) to try their new 0-6-0+0-6-0 Kitson-Meyer articulated steam locomotive. In 1903, one locomotive was delivered to the CGR and two to the B&MR and, in 1904, one to the CSAR. Unlike a Garratt, both engine units on these locomotives were arranged with the cylinders aft of the coupled wheels. All three railways found their Kitson-Meyers to be poor steamers and, as built, none of these locomotives had a long service life. The three CGR and B&MR locomotives were all scrapped by 1912. In 1906, the CSAR modified its Class M locomotive by reducing the diameter of the cylinders to bring them within the range of the boiler’s steam generating capacity. While this reduced the locomotive’s tractive effort, it improved its performance sufficiently to allow it to survive in service longer than the other three. In 1912, it was assimilated into the South African Railways and designated Class KM.
The 0-6-0+0-6-0 configuration was also applied to diesel-electric locomotives when British Rail created the Class 13 in 1965. This was done by permanently coupling two Class 08 0-6-0DE shunting engines as "master and slave" units, the latter with its cab removed. In North American terminology, this is referred to as a "cow and calf" arrangement. The modification came about because of a need to provide more powerful shunting locomotives for the Tinsley Marshalling Yard.
|Wikimedia Commons has media related to 0-6-0+0-6-0.|
- Whyte notation
- Hamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives produced by Beyer, Peacock, retrieved 10 November 2012
- Hamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives from Other Builders, retrieved 10 November 2012
- Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 31, 84. ISBN 0869772112.
- 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. 21. ISBN 9 780620 512282.
- Abbott, Rowland A.S. (1970). The Fairlie Locomotive, (1st ed.). South Devon House, Newton Abbot, Devon: David & Charles, Newton Abbot. pp. 34, 36-38. ISBN 0 7153 4902 3.
- Holland, D.F. (1971). Steam Locomotives of the South African Railways, Volume 1: 1859-1910 (1st ed.). Newton Abbott, Devon: David & Charles. pp. 25–27, 31–32, 69–70, 130–132. ISBN 978-0-7153-5382-0.
- Classification of S.A.R. Engines with Renumbering Lists, issued by the Chief Mechanical Engineer’s Office, Pretoria, January 1912, pp. 9, 15, 46 (Reprinted in April 1987 by SATS Museum, R.3125-6/9/11-1000)