SR West Country and Battle of Britain classes
The SR West Country and Battle of Britain classes, collectively known as Light Pacifics or informally as Spam Cans, or "flat tops", are air-smoothed 4-6-2 Pacific steam locomotives designed for the Southern Railway by its Chief Mechanical Engineer Oliver Bulleid. Incorporating a number of new developments in British steam locomotive technology, they were amongst the first British designs to use welding in the construction process, and to use steel fireboxes, which meant that components could be more easily constructed under wartime austerity and post-war economy.
TYPE AND ORIGIN
| Power type | Steam
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| Designer | |||
| Builder |
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| Build date | 1945–1951
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| Total produced | 110
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SPECIFICATIONS
| Configuration:Whyte | 4-6-2 (Pacific)
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| Gauge | |||
| Leading dia. | 3 ft 1 in (0.940 m)
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| Driver dia. | 6 ft 2 in (1.880 m)
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| Trailing dia. | 3 ft 1 in (0.940 m)
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| Length | 67 ft 4.75 in (20.54 m)
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| Loco weight | 86 long tons (87.4 t; 96.3 short tons)
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| Fuel type | |||
| Fuel capacity | 5.00 long tons (5.1 t; 5.6 short tons)
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| Water cap | 4,500 imp gal (20,460 L; 5,400 US gal)
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| Boiler pressure | |||
| Cylinders | 3
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| Cylinder size | 16.375 in × 24 in (416 mm × 610 mm)
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PERFORMANCE FIGURES
| Tractive effort | 31,000 lbf (137.9 kN)
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CAREER
| Operators | |||
| Class | SR / BR: Light Pacifics
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| Power class |
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| Numbers |
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| Locale | |||
| Withdrawn | 1963–1967
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| Disposition | 60 rebuilt (see below); 10 preserved, 40 scrapped
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Contributors
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