| GWR 1000 "County" class |
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| Specifications |
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Configuration:
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| • Whyte | 4-6-0 |
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| • UIC | 2'Ch2 |
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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 (914 mm) |
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| Driver dia. | 6 ft 3 in (1,905 mm) |
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| Minimum curve | 8 chains (528 ft; 161 m) normal,
7 chains (462 ft; 141 m) slow |
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| Length | 63 ft 0+1⁄4 in (19.21 m) |
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| Width | 8 ft 11+1⁄8 in (2.721 m) |
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| Height | 13 ft 5 in (4.089 m) |
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| Axle load | 19 long tons 14 cwt (44,100 lb or 20 t) (22.1 short tons) full |
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| Adhesive weight | 59 long tons 2 cwt (132,400 lb or 60 t) (66.2 short tons) full |
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| Loco weight | 76 long tons 17 cwt (172,100 lb or 78.1 t) (86.1 short tons)full |
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| Tender weight | 49 long tons 0 cwt (109,800 lb or 49.8 t) (54.9 short tons) full |
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| Fuel type | Coal |
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| Fuel capacity | 7 long tons 0 cwt (15,700 lb or 7.1 t) (7.8 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 | 28.84 sq ft (2.679 m2) |
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| Boiler | GWR Standard No. 15 |
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| Boiler pressure | 280 psi (1.93 MPa) later reduced to 250 psi (1.72 MPa) |
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| Heating surface: | |
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| • Firebox | 169.0 sq ft (15.70 m2) |
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| • Tubes and flues | 1,545.0 sq ft (143.54 m2) |
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Superheater:
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| • Heating area | 254.0 sq ft (23.60 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 |
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| Valve type | piston valves |
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| Performance figures |
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| Tractive effort | 32,580 lbf (144.92 kN), later reduced to 29,090 lbf (129.40 kN) |
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The Great Western Railway 1000 Class or County Class was a class of 4-6-0 steam locomotive. Thirty examples were built between 1945 and 1947, but all were withdrawn and scrapped in the early 1960s. A replica locomotive is under construction.
