| GWR 7800 "Manor" Class |
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7815 Fritwell Manor at Gloucester, October 1959. |
| Type and origin |
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| Power type | Steam |
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| Designer | Charles Collett |
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| Builder | GWR/BR Swindon Works |
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| Order number | Lot 316, Lot 377 |
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| Build date | 1938–1939 (7800-7819),
1950 (7820-7829) |
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| Total produced | 30 |
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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. | 5 ft 8 in (1,727 mm) |
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| Minimum curve | 6 chains (396 ft; 121 m) normal,
5 chains (330 ft; 101 m) slow |
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| Wheelbase | Loco: 27 ft 1 in (8.26 m)
Loco & tender: 52 ft 1+3⁄4 in (15.89 m) |
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| Length | 61 ft 9+1⁄4 in (18.83 m) |
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| Width | 8 ft 11 in (2.718 m) |
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| Height | 13 ft 0 in (3.962 m) |
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| Axle load | 17 long tons 5 cwt (38,600 lb or 17.5 t) (19.3 short tons) |
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| Loco weight | 68 long tons 18 cwt (154,300 lb or 70 t) (77.2 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 | 7 long tons 0 cwt (15,700 lb or 7.1 t) (7.8 short tons) |
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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 | 22.1 sq ft (2.05 m2) |
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| Boiler | GWR Standard No. 14 |
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| Boiler pressure | 225 psi (1.55 MPa) |
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| Heating surface: | |
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| • Firebox | 140.0 sq ft (13.01 m2) |
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| • Tubes and flues | 1,285.5 sq ft (119.43 m2) |
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Superheater:
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| • Heating area | 160.0 sq ft (14.86 m2) |
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| Cylinders | Two, outside |
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| Cylinder size | 18 in × 30 in (457 mm × 762 mm) |
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The Great Western Railway (GWR) 7800 Class or Manor Class is a class of 4-6-0 steam locomotive. They were designed as a lighter version of the Grange Class, giving them a wider Route Availability. Like the 'Granges', the 'Manors' used parts from the GWR 4300 Class Moguls but just on the first batch of twenty. Twenty were built between 1938 and 1939, with British Railways adding a further 10 in 1950. They were named after Manors in the area covered by the Great Western Railway. Nine are preserved.
