The Great Western Railway (GWR) 6000 Class or King Class is a class of 4-6-0 steam locomotives designed for express passenger work and introduced in 1927. They were the largest locomotives built by the GWR, apart from the unique Pacific (The Great Bear). The class was named after kings of the United Kingdom and of England, beginning with the then reigning monarch, King George V, and going back through history. They handled the principal GWR expresses on the main line from London to the West of England and on the Chiltern line to Birmingham and Wolverhampton, until 1962 when the class was withdrawn.
Quick Facts 6000 King Class, Type and origin ...
6000 King Class |
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6024 King Edward I at Didcot Railway Centre in June 1994 |
Type and origin |
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Power type | Steam |
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Designer | Charles Collett |
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Builder | GWR Swindon Works |
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Order number | Lots 243, 267, 309 |
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Build date | 1927–1928 (20), 1930 (10), 1936 (1) |
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Total produced | 31 |
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Specifications |
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Configuration:
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• Whyte | 4-6-0 |
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• UIC | 2′C h4 |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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Leading dia. | 3 ft 0 in (0.914 m) |
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Driver dia. | 6 ft 6 in (1.981 m) |
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Minimum curve | 8 chains (530 ft; 160 m) normal, 7 chains (460 ft; 140 m) slow |
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Length | 68 ft 2 in (20.78 m) over buffers |
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Width | 8 ft 11+1⁄2 in (2.731 m) |
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Height | 13 ft 4+3⁄4 in (4.083 m) |
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Axle load | 22 long tons 10 cwt (50,400 lb or 22.9 t) (25.2 short tons) full |
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Adhesive weight | 67 long tons 10 cwt (151,200 lb or 68.6 t) (75.6 short tons) full |
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Loco weight | 89 long tons 0 cwt (199,400 lb or 90.4 t) (99.7 short tons) full |
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Tender weight | 46 long tons 14 cwt (104,600 lb or 47.4 t) (51.2 short tons) full |
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Total weight | 135 long tons 14 cwt (304,000 lb or 137.9 t) (152.0 short tons) |
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Fuel type | Coal |
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Fuel capacity | 6 long tons 0 cwt (13,400 lb or 6.1 t) (6.7 short tons) |
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Water cap. | 4,000 imp gal (18,000 L; 4,800 US gal) |
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Boiler | GWR Standard No. 12 |
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Boiler pressure | 250 lbf/in2 (1.72 MPa) |
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Cylinders | Four: two inside, two outside |
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Cylinder size | 16+1⁄4 in × 28 in (413 mm × 711 mm) |
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Valve gear | Inside cylinders: Walschaerts Outside cylinders: derived from inside cylinders via rocking bars |
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Performance figures |
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Tractive effort | 40,300 lbf (179.3 kN) original, 39,700 lbf (176.6 kN) after 1st overhaul |
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Career |
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Operators | |
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Class | 6000 King-class |
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Power class | GWR: Special BR: 8P |
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Number in class | 30 |
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Numbers | 6000–6029 |
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Official name | King-class |
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Axle load class | GWR: Double Red |
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Locale | Western Region |
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Withdrawn | 1936 (1), 1962 (30) |
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Preserved | 6000, 6023, 6024 |
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Disposition | Three preserved, remainder scrapped. |
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