| Great Western Railway 6959 Class |
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6960 Raveningham Hall (now preserved) with a Didcot slow train, April 1957. |
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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 h2 |
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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 0 in (1.829 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 | 63 ft 0+1⁄4 in (19.21 m) over buffers |
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| Width | 8 ft 11+1⁄2 in (2.731 m) |
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| Height | 13 ft 2+1⁄16 in (4.015 m) |
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| Axle load | 19 long tons 5 cwt (43,100 lb or 19.6 t) (21.6 short tons) |
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| Adhesive weight | 57 long tons 10 cwt (128,800 lb or 58.4 t) (64.4 short tons) |
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| Loco weight | 75 long tons 16 cwt (169,800 lb or 77 t) (84.9 short tons) full |
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| Tender weight | 47 long tons 6 cwt (106,000 lb or 48.1 t) (53.0 short tons) full |
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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) (5.6 short tons) |
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| Water cap. | 4,000 imp gal (18,000 L; 4,800 US gal) |
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| Firebox: | |
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| • Grate area | 27.07 sq ft (2.515 m2) |
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| Boiler | GWR Standard No. 1 |
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| Boiler pressure | 225 psi (1.55 MPa) |
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| Heating surface: | |
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| • Firebox | 154.90 sq ft (14.391 m2) |
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| • Tubes and flues | 1,582.60 sq ft (147.028 m2) |
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Superheater:
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| • Heating area | 295 sq ft (27.4 m2) |
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| Cylinders | Two, outside |
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| Cylinder size | 18.5 in × 30 in (470 mm × 762 mm) |
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| Valve gear | Stephenson, inside |
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| Valve type | Piston valves |
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The Great Western Railway (GWR) 6959 or Modified Hall Class is a class of 4-6-0 steam locomotive. They were a development by Frederick Hawksworth of Charles Collett's earlier Hall Class named after English and Welsh country houses.
