| GWR 3800 'County' Class |
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3818 County of Radnor as built in 1906 |
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| Specifications |
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Configuration:
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| • Whyte | 4-4-0 |
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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. | 6 ft 8+1⁄2 in (2,045 mm) |
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| Wheelbase | 24 ft 0 in (7,315 mm) |
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| Axle load | 18.15 long tons (18.44 t; 20.33 short tons) |
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| Adhesive weight | 34.3 long tons (34.85 t; 38.42 short tons) |
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| Loco weight | 55.3 long tons (56.19 t; 61.94 short tons) |
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| Tender weight | 36.75 long tons (37.34 t; 41.16 short tons) |
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| Total weight | 92.05 long tons (93.53 t; 103.10 short tons) |
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| Fuel type | Coal |
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| Water cap. | 3,000 imp gal (13,638 L; 3,603 US gal) |
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| Firebox: | |
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| • Grate area | 20.56 sq ft (1.91 m2) |
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| Boiler | GWR Standard No. 4 |
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| Boiler pressure | 200 psi (1,379 kPa) |
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| Heating surface: | |
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| • Firebox | 128.30 sq ft (11.92 m2) |
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| • Tubes | 1,689.82 sq ft (156.99 m2) |
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| • Total surface | 1,818.12 sq ft (168.91 m2) |
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| Cylinders | 2, outside |
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| Cylinder size | 18 in × 30 in (457 mm × 762 mm) diameter x stroke |
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| Valve gear | Stephenson |
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| Career |
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| Operators | Great Western Railway |
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| Class | 3800 |
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| Power class | GWR: C |
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| Number in class | 40 |
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| Numbers | 3473–82, 3801–30 until Dec 1912 3800–39 from December 1912 |
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| Official name | County |
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| Nicknames | Churchward's Rough Riders |
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| Axle load class | GWR: Red |
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| Withdrawn | 1930–33 |
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| Disposition | All original locomotives scrapped; one new-build under construction |
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| Dimensions as built |
The Great Western Railway 3800 Class, also known as the County Class, were a class of 4-4-0 steam locomotives for express passenger train work introduced in 1904 in a batch of ten. Two more batches followed in 1906 and 1912 with minor differences. They were designed by George Jackson Churchward, who used standard components to produce a four-coupled version of his Saint Class 4-6-0s.