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Great photo pro 3 1 0 download free. Under the Whyte notation for the classification of steam locomotives by wheel arrangement, the 2-8-0+0-8-2 is a Garrattarticulated locomotive. The wheel arrangement is effectively two 2-8-0 locomotives operating back to back, with the boiler and cab suspended between the two power units. Each power unit has a single pair of leading wheels in a leading truck, followed by four coupled pairs of driving wheels and no trailing wheels. Since the 2-8-0 type is sometimes known as a Consolidation, the corresponding Garratt type could be referred to as a Double Consolidation.
A similar wheel arrangement exists for Mallet type locomotives, but is referred to as 2-8-8-2.
Overview[edit]
This Garratt wheel arrangement was somewhat common, especially for locomotives intended for freight service. The first 2-8-0+0-8-2 locomotive was a single metre gauge locomotive built by Beyer Peacock in 1924 for the Burma Railways as their class GA.I. The second, and perhaps the better known, was the single Class U1 of the London and North Eastern Railway (LNER), built in 1925.[1][2][3]
| Gauge | Railway | Class | Works no. | Units | Year | Builder |
|---|---|---|---|---|---|---|
| 1,000 mm | Burma Railways | GA.I | 6180 | 1 | 1924 | Beyer, Peacock |
| 1,000 mm | Burma Railways | GA.II | 6354 | 1 | 1927 | Beyer, Peacock |
| 1,000 mm | Burma Railways | GA.III | 6411-6413 | 3 | 1927 | Beyer, Peacock |
| 1,000 mm | War Dept., Bengal Assam Railway | Light | 7112-7121 | 10 | 1943 | Beyer, Peacock |
| 1,000 mm | Burma Railways | GA.IV | 1077-1084 | 8 | 1929 | Krupp |
| 4 ft 81⁄2 in | London and North Eastern Railway | U1 | 6209 | 1 | 1925 | Beyer, Peacock |
| 4 ft 81⁄2 in | Ottoman Railways, Turkey | 6324 | 1 | 1927 | Beyer, Peacock | |
| 4 ft 81⁄2 in | Mauritius Railway | 6381-6383 | 3 | 1927 | Beyer, Peacock | |
| 5 ft 6 in | Bengal Nagpur Railway, India | HSG | 6261-6262 | 2 | 1925 | Beyer, Peacock |
Usage[edit]
Burma[edit]
Apart from their first single class GA.I locomotive of 1924, the 1,000 mm (3 ft 33⁄8 in) metre gaugeBurma Railways acquired another locomotive from Beyer, Peacock in 1927, classifying it GA.II. In that same year, another four of class GA.III were placed in service, also from Beyer, Peacock. In 1929, Krupp of Essen in Germany delivered eight more, designated Class GA.IV.[1][4]
India[edit]
The 5 ft 6 in (1,676 mm) Bengal Nagpur Railway in India used two of the class HSG, built by Beyer, Peacock in 1925.
Ten 1,000 mm (3 ft 33⁄8 in) metre gauge examples were purchased by the British War Department in 1943 and used on the Bengal Assam Railway in India as their Class MWGX.[1]
Mauritius[edit]
India[edit]
The 5 ft 6 in (1,676 mm) Bengal Nagpur Railway in India used two of the class HSG, built by Beyer, Peacock in 1925.
Ten 1,000 mm (3 ft 33⁄8 in) metre gauge examples were purchased by the British War Department in 1943 and used on the Bengal Assam Railway in India as their Class MWGX.[1]
Mauritius[edit]
The Mauritius Railway owned three 4 ft 81⁄2 in (1,435 mm) standard gauge2-8-0+0-8-2 Garratts, also built by Beyer, Peacock in 1927.[1]
Turkey[edit]
The Ottoman Railways in Turkey acquired a single 4 ft 81⁄2 in (1,435 mm) standard gauge2-8-0+0-8-2 Garratt from Beyer, Peacock in 1927.[1]
United Kingdom[edit]
The London and North Eastern Railway (LNER) owned a single Class U1 Garratt, built by Beyer, Peacock in 1925. It was designed by Nigel Gresley for banking coal trains over the Worsborough Bank, a steeply graded line in South Yorkshire and part of the Woodhead Route. The Class U1 was both the longest and the most powerful steam locomotive ever to run in the United Kingdom.[1][2][3]
References[edit]
| Wikimedia Commons has media related to 2-8-0+0-8-2. |
- ^ abcdefgHamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives produced by Beyer, Peacock, retrieved 10 November 2012
- ^ ab'The Woodhead Site - The Locomotives - LNER Beyer-Garratt'. www.thewoodheadsite.org.uk. Archived from the original on 2007-09-27. Retrieved 3 October 2008.
- ^ abMarsden, Richard. 'The U1 Garratt ('The Wath Banker')'. The LNER Encyclopaedia. Retrieved 3 October 2008.
- ^ abHamilton, Gavin N., The Garratt Locomotive - Garratt Locomotives from Other Builders, retrieved 10 November 2012
Under the Whyte notation for the classification of steam locomotives, 0-8-4 represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles, and four trailing wheels on two axles (usually in a trailing bogie).
Equivalent classifications[edit]
Other equivalent classifications are:
- UIC classification: D2 (also known as German classification and Italian classification)
- French classification: 042
- Turkish classification: 46
- Swiss classification: 4/6
Examples[edit]
All examples of this wheel arrangement were tank locomotives; there are no 0-8-4 tender locomotives recorded.
United Kingdom[edit]
The tank locomotives were themselves rare. Two separate classes were built in the UK, by two different railway companies. Both of these had their origins with an 0-8-0 tender design. Both classes were designed as powerful, but slow-speed, locomotives for heavy shunting. They did not require high speed or long range, so had no need for a leading truck or the greater coal capacity of a tender. Other than this though, they were quite distinct.
The first example was the Great Central RailwayClass 8H of 1907.[1] These were designed for hump shunting and so required high tractive effort, good adhesion and traction for starting from rest. Although developed from the 8A tender class, and having some interchangeable parts in their running gear,[2] they also had three cylinders rather than two. The three cylinder tank locomotive was in fashion at this time, as a means of achieving good acceleration from rest, owing to their more even power delivery and the reduced risk of wheelslip.[3] This three-cylindered pattern had begun with Holden's Decapod of 1902 and carried through into Worsdell and Raven's fast passenger tank locomotives of 4-6-2T and 4-4-4T layout for the North Eastern Railway in 1910 and 1913. Worsdell also designed a comparable heavy shunter of his own, the Class X, although this used the 4-8-0T layout with a leading bogie, rather than trailing.
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The class was considered a success, although highly specialised, and developments were rebuilt and built new by the LNER. The rebuilt locomotive trialled a new outside-framed bogie, fitted with a booster engine, the LNER being one of the few UK railways to favour these.[4] Two further locomotives were also built by the LNER. Six were built in total.
The second example was LNWR380 Class. These were a simple stretched version of the inside-cylindered 0-8-2T1185 Class, which had been derived from the LNWR's numerous 0-8-0 freight locomotives, with a larger coal bunker.[5] The class was intended for both shunting, banking[6] and as mineral engines for the heavy coal or iron train use in the South Wales coalfield. The enlarged bunker made them more suitable for these longer workings. Thirty were built.
References[edit]
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- ^Casserley, H.C.; Asher, L.L. (1961) [1955]. Locomotives of British Railways. Spring Books. pp. 113, 473.
- ^Ahrons, E. L. (1927). The British Steam Railway Locomotive 1825-1925. Amen Corner, London: Locomotive Publishing Co. pp. 338.
- ^Ahrons, British Steam Railway Locomotive, pp. 337—340
- ^'Robinson Class S1 0-8-4 Tank Locomotives'. LNER Encyclopedia.
- ^Casserley & Asher, Locomotives of British Railways, pp. 70, 319
- ^Ahrons, British Steam Railway Locomotive, pp. 360, 364, 370
