| GWR No.4277 ‘Hercules’ |
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 GWR 2-8-0T Class 42xx No. 4277 Hercules at Paignton Station on the Dartmouth Steam Railway. |
| Type and origin |
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| Power type | Steam |
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| Builder | GWR Swindon Works |
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| Order number | Lot 213 |
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| Serial number | Swindon 2857 |
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| Build date | 1920 |
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| Specifications |
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Configuration:
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| • Whyte | 2-8-0T |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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| Leading dia. | 3 ft 2 in (965 mm) |
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| Driver dia. | 4 ft 7+1⁄2 in (1,410 mm) |
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| Length | 40 ft 9 in (12.421 m) |
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| Width | 8 ft 11 in (2.718 m) |
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| Height | 12 ft 10+1⁄16 in (3.913 m) |
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| Loco weight | 81 long tons 12 cwt (182,800 lb or 82.9 t)
(82.9 t; 91.4 short tons) |
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| Fuel type | Coal |
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| Fuel capacity | 4 long tons (4.1 t; 4.5 short tons) |
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| Water cap. | 1,800 imp gal (8,200 L; 2,200 US gal) |
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| Boiler | GWR Standard No. 4 |
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| Boiler pressure | 200 psi (1.38 MPa) |
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| Cylinders | two outside |
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| Cylinder size | 18+1⁄2 in × 30 in (470 mm × 762 mm) |
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Great Western Railway (GWR) 4200 Class No. 4277 is a preserved British steam locomotive. In preservation it has carried the name Hercules.
