GWR 7800 Class

Specifications
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2'Ch2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 0 in (914 mm)
Driver dia.	5 ft 8 in (1,727 mm)
Minimum curve	6 chains (396 ft; 121 m) normal,; 5 chains (330 ft; 101 m) slow
Wheelbase	Loco: 27 ft 1 in (8.26 m); Loco & tender: 52 ft 1+3⁄4 in (15.89 m)
Length	61 ft 9+1⁄4 in (18.83 m)
Width	8 ft 11 in (2.718 m)
Height	13 ft 0 in (3.962 m)
Axle load	17 long tons 5 cwt (38,600 lb or 17.5 t) (19.3 short tons)
Loco weight	68 long tons 18 cwt (154,300 lb or 70 t) (77.2 short tons) full
Tender weight	40 long tons 0 cwt (89,600 lb or 40.6 t) (44.8 short tons) full
Fuel type	Coal
Fuel capacity	7 long tons 0 cwt (15,700 lb or 7.1 t) (7.8 short tons)
Water cap.	3,500 imp gal (16,000 L; 4,200 US gal)
Firebox:
• Grate area	22.1 sq ft (2.05 m2)
Boiler	GWR Standard No. 14
Boiler pressure	225 psi (1.55 MPa)
Heating surface:
• Tubes and flues	1,285.5 sq ft (119.43 m2)
• Firebox	140.0 sq ft (13.01 m2)
Superheater:;
• Heating area	160.0 sq ft (14.86 m2)
Cylinders	Two, outside
Cylinder size	18 in × 30 in (457 mm × 762 mm)

Type and origin
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	GWR/BR Swindon Works
Order number	Lot 316, Lot 377
Build date	1938–1939 (7800-7819), 1950 (7820-7829)
Total produced	30

GWR 7800 "Manor" Class
GWR 7800 "Manor" Class
	7815 Fritwell Manor at Gloucester, October 1959.
Power type
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	GWR/BR Swindon Works
Order number	Lot 316, Lot 377
Build date	1938–1939 (7800-7819), 1950 (7820-7829)
Total produced	30
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2'Ch2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 0 in (914 mm)
Driver dia.	5 ft 8 in (1,727 mm)
Minimum curve	6 chains (396 ft; 121 m) normal,; 5 chains (330 ft; 101 m) slow
Wheelbase	Loco: 27 ft 1 in (8.26 m); Loco & tender: 52 ft 1+3⁄4 in (15.89 m)
Length	61 ft 9+1⁄4 in (18.83 m)
Width	8 ft 11 in (2.718 m)
Height	13 ft 0 in (3.962 m)
Axle load	17 long tons 5 cwt (38,600 lb or 17.5 t) (19.3 short tons)
Loco weight	68 long tons 18 cwt (154,300 lb or 70 t) (77.2 short tons) full
Tender weight	40 long tons 0 cwt (89,600 lb or 40.6 t) (44.8 short tons) full
Fuel type	Coal
Fuel capacity	7 long tons 0 cwt (15,700 lb or 7.1 t) (7.8 short tons)
Water cap.	3,500 imp gal (16,000 L; 4,200 US gal)
Firebox:
• Grate area	22.1 sq ft (2.05 m2)
Boiler	GWR Standard No. 14
Boiler pressure	225 psi (1.55 MPa)
Heating surface:
• Tubes and flues	1,285.5 sq ft (119.43 m2)
• Firebox	140.0 sq ft (13.01 m2)
Superheater:;
• Heating area	160.0 sq ft (14.86 m2)
Cylinders	Two, outside
Cylinder size	18 in × 30 in (457 mm × 762 mm)
Tractive effort
Performance figures
Tractive effort	27,340 lbf (121.61 kN)
Operators
Career
Operators	Great Western Railway; British Railways
Class	GWR: 7800 "Manor"
Power class	GWR: D; BR: 5MT
Number in class	30
Axle load class	GWR: Blue
Retired	April 1963 – December 1965
Disposition	21 scrapped, 9 preserved

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.

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