GWR 6959 Class

Specifications
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 0 in (0.914 m)
Driver dia.	6 ft 0 in (1.829 m)
Minimum curve	8 chains (530 ft; 160 m) normal,; 7 chains (460 ft; 140 m) slow
Length	63 ft 0+1⁄4 in (19.21 m) over buffers
Width	8 ft 11+1⁄2 in (2.731 m)
Height	13 ft 2+1⁄16 in (4.015 m)
Axle load	19 long tons 5 cwt (43,100 lb or 19.6 t) (21.6 short tons)
Adhesive weight	57 long tons 10 cwt (128,800 lb or 58.4 t) (64.4 short tons)
Loco weight	75 long tons 16 cwt (169,800 lb or 77 t) (84.9 short tons) full
Tender weight	47 long tons 6 cwt (106,000 lb or 48.1 t) (53.0 short tons) full
Fuel type	Coal
Fuel capacity	6 long tons 0 cwt (13,400 lb or 6.1 t) (5.6 short tons)
Water cap.	4,000 imp gal (18,000 L; 4,800 US gal)
Firebox:
• Grate area	27.07 sq ft (2.515 m2)
Boiler	GWR Standard No. 1
Boiler pressure	225 psi (1.55 MPa)
Heating surface:
• Firebox	154.90 sq ft (14.391 m2)
• Tubes and flues	1,582.60 sq ft (147.028 m2)
Superheater:;
• Heating area	295 sq ft (27.4 m2)
Cylinders	Two, outside
Cylinder size	18.5 in × 30 in (470 mm × 762 mm)
Valve gear	Stephenson, inside
Valve type	Piston valves

Type and origin
Type and origin
Power type	Steam
Designer	Frederick Hawksworth
Builder	GWR/BR Swindon Works
Order number	Lots 350, 366, 368, 376
Build date	1944–1950
Total produced	71

Great Western Railway 6959 Class
Great Western Railway 6959 Class
	6960 Raveningham Hall (now preserved) with a Didcot slow train, April 1957.
Power type
Type and origin
Power type	Steam
Designer	Frederick Hawksworth
Builder	GWR/BR Swindon Works
Order number	Lots 350, 366, 368, 376
Build date	1944–1950
Total produced	71
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 0 in (0.914 m)
Driver dia.	6 ft 0 in (1.829 m)
Minimum curve	8 chains (530 ft; 160 m) normal,; 7 chains (460 ft; 140 m) slow
Length	63 ft 0+1⁄4 in (19.21 m) over buffers
Width	8 ft 11+1⁄2 in (2.731 m)
Height	13 ft 2+1⁄16 in (4.015 m)
Axle load	19 long tons 5 cwt (43,100 lb or 19.6 t) (21.6 short tons)
Adhesive weight	57 long tons 10 cwt (128,800 lb or 58.4 t) (64.4 short tons)
Loco weight	75 long tons 16 cwt (169,800 lb or 77 t) (84.9 short tons) full
Tender weight	47 long tons 6 cwt (106,000 lb or 48.1 t) (53.0 short tons) full
Fuel type	Coal
Fuel capacity	6 long tons 0 cwt (13,400 lb or 6.1 t) (5.6 short tons)
Water cap.	4,000 imp gal (18,000 L; 4,800 US gal)
Firebox:
• Grate area	27.07 sq ft (2.515 m2)
Boiler	GWR Standard No. 1
Boiler pressure	225 psi (1.55 MPa)
Heating surface:
• Firebox	154.90 sq ft (14.391 m2)
• Tubes and flues	1,582.60 sq ft (147.028 m2)
Superheater:;
• Heating area	295 sq ft (27.4 m2)
Cylinders	Two, outside
Cylinder size	18.5 in × 30 in (470 mm × 762 mm)
Valve gear	Stephenson, inside
Valve type	Piston valves
Tractive effort
Performance figures
Tractive effort	27,275 lbf (121.33 kN)
Operators
Career
Operators	Great Western Railway; → British Railways
Power class	GWR: D,; BR: 5MT
Numbers	6959–6999, 7900-7929
Axle load class	GWR: Red
Withdrawn	January 1963 – December 1965
Disposition	Six preserved, one donor, remainder scrapped

The Great Western Railway (GWR) 6959 or Modified Hall Class is a class of 4-6-0 steam locomotive. They were a development by Frederick Hawksworth of Charles Collett's earlier Hall Class named after English and Welsh country houses.

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