| WAGR W class |
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| Type and origin |
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| Power type | Steam |
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| Designer | Frederick Mills, Charles Clarke & Beyer, Peacock & Co |
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| Builder | Beyer, Peacock & Co |
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| Serial number | 7378-7417, 7453-7472 |
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| Build date | 1951–1952 |
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| Total produced | 60 |
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| Specifications |
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Configuration:
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| • Whyte | 4-8-2 |
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| Gauge | 3 ft 6 in (1,067 mm) |
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| Leading dia. | 2 ft 6 in (762 mm) |
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| Driver dia. | 4 ft 0 in (1,219 mm) |
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| Trailing dia. | 2 ft 6 in (762 mm) |
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| Length | 61 ft 10.9 in (18.87 m) |
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| Width | 8 ft 2 in (2.49 m) |
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| Height | 12 ft 4.4 in (3.77 m) |
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| Axle load | 9 long tons 15 cwt (21,800 lb or 9.9 t) |
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| Loco weight | 97 long tons 10 cwt (218,400 lb or 99.1 t) |
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| Fuel type | Coal |
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| Fuel capacity | 5 long tons 0 cwt (11,200 lb or 5.1 t) |
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| Water cap. | W901-W940: 3,000 imp gal (14,000 L; 3,600 US gal)
W941-W960: 3,620 imp gal (16,500 L; 4,350 US gal) |
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| Boiler pressure | 200 lbf/in2 (1.38 MPa) |
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| Superheater | 22-element Melesco |
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| Cylinders | 2 |
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| Cylinder size | 16 in × 24 in (406 mm × 610 mm) |
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| Valve gear | Walschaerts |
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| Valve type | 8.5-inch (220 mm) piston valve |
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| Loco brake | Vacuum |
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| Train brakes | Vacuum Brakes |
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The WAGR W class is a class of 4-8-2 steam locomotives operated by the Western Australian Government Railways (WAGR) between 1951 and 1972.
