| GWR 3200 class |
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| Type and origin |
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| Power type | Steam |
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| Designer | Charles Collett (rebuild) |
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| Order number | Lots 315, 331 |
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| Rebuilder | GWR Swindon Works |
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| Rebuild date | 1936–1939 |
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| Number rebuilt | 30 |
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| Specifications |
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Configuration:
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| • Whyte | 4-4-0 |
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| • UIC | 2′B 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 8 in (1.118 m) |
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| Driver dia. | 5 ft 8 in (1.727 m) |
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| Minimum curve | 6 chains (396 ft; 121 m) normal,
5 chains (330 ft; 101 m) slow |
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| Length | 56 ft 2+1⁄4 in (17.13 m) |
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| Width | 8 ft 9+1⁄2 in (2.680 m) |
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| Height | 12 ft 10 in (3.912 m) |
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| Axle load | 15 long tons 8 cwt (34,500 lb or 15.6 t)
(17.2 short tons) full |
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| Adhesive weight | 30 long tons 8 cwt (68,100 lb or 30.9 t)
(34.0 short tons) full |
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| Loco weight | 49 long tons 0 cwt (109,800 lb or 49.8 t)
(54.9 short tons) full |
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| Tender weight | 40 long tons 0 cwt (89,600 lb or 40.6 t)
(44.8 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) full |
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| Water cap. | 3,500 imp gal (16,000 L; 4,200 US gal) |
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| Firebox: | |
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| • Grate area | 17.0 sq ft (1.58 m2) |
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| Boiler | GWR Duke |
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| Boiler pressure | 180 lbf/in2 (1.24 MPa) |
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| Heating surface: | |
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| • Firebox | 108.0 sq ft (10.03 m2) |
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| • Tubes | 1,001.0 sq ft (93.00 m2) |
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Superheater:
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| • Heating area | 81.2 sq ft (7.54 m2) |
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| Cylinders | Two, inside |
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| Cylinder size | 18 in × 26 in (457 mm × 660 mm) |
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| Valve gear | Stephenson |
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| Valve type | Slide valves |
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| Career |
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| Operators | GWR » BR |
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| Power class | GWR: B,
BR: 2P |
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| Numbers | 3265, 3200–3228; renumbered 9065, 9000–9028 |
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| Nicknames | Dukedog |
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| Axle load class | Yellow |
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| Locale | Western Region |
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| Withdrawn | 1948–1960 |
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| Preserved | 9017 |
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| Disposition | One preserved, remainder scrapped |
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The Great Western Railway 3200 Class (or 'Earl' Class) was a design of 4-4-0 steam locomotive for passenger train work. The nickname for this class, almost universally used at the time these engines were in service, was Dukedog since the locomotives were composed of former Duke Class boilers on Bulldog Class frames. As such they were one of the last standard gauge steam locomotive classes to retain outside frames.
