GWR 5700 Class information

Specifications
Specifications
Configuration:;
• Whyte	0-6-0PT
• UIC	C n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	4 ft 7+1⁄2 in (1.410 m)
Minimum curve	5 chains (330 ft; 101 m) normal; 4+1⁄2 chains (297 ft; 91 m) slow;
Wheelbase	15 ft 6 in (4.72 m)
Length	31 ft 2 in (9.50 m) over buffers
Width	8 ft 7 in (2.616 m)
Height	12 ft 3+1⁄16 in (3.735 m)
Frame type	Type: Inside; Length: 27 ft 6 in (8.38 m); Width: 8 ft 7 in (2.616 m);
Axle load	16 long tons 15 cwt (37,500 lb or 17 t); (18.8 short tons) full
Loco weight	47 long tons 10 cwt (106,400 lb or 48.3 t); (53.2 short tons) full
Fuel type	Coal
Fuel capacity	3 long tons 6 cwt (7,400 lb or 3.4 t); (3.7 short tons)
Water cap.	1,200 imp gal (5,500 L; 1,400 US gal)
Firebox:
• Grate area	15.3 sq ft (1.42 m2)
Boiler:;
• Model	GWR 2301
• Pitch	6 ft 11+3⁄4 in (2.127 m)
• Diameter	Barrel: 10 ft 3 in (3.12 m) ; Outside diameter: 4 ft 5 in (1.35 m) & 4 ft 3+7⁄8 in (1.318 m)
Boiler pressure	200 lbf/in2 (1.38 MPa)
Heating surface:
• Firebox	102.3 sq ft (9.50 m2)
• Tubes	1,075.7 sq ft (99.94 m2)
• Total surface	1,178.0 sq ft (109.44 m2)
Cylinders	Two, inside
Cylinder size	17.5 in × 24 in (444 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide valves
Train heating	steam
Loco brake	steam
Train brakes	vacuum
Safety systems	ATC

Type and origin
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	GWR Swindon Works (613); Armstrong Whitworth (25); W. G. Bagnall (50); Beyer, Peacock & Co. (25); Kerr Stuart (25); North British Locomotive (100); Yorkshire Engine Co. (25);
Order number	See Build details below
Build date	1929–1950
Total produced	863

Great Western Railway 5700 class
Great Western Railway 5700 class
	4634 at Newport High Street Station in 1954
Power type
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	GWR Swindon Works (613); Armstrong Whitworth (25); W. G. Bagnall (50); Beyer, Peacock & Co. (25); Kerr Stuart (25); North British Locomotive (100); Yorkshire Engine Co. (25);
Order number	See Build details below
Build date	1929–1950
Total produced	863
Configuration:;
Specifications
Configuration:;
• Whyte	0-6-0PT
• UIC	C n2t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	4 ft 7+1⁄2 in (1.410 m)
Minimum curve	5 chains (330 ft; 101 m) normal; 4+1⁄2 chains (297 ft; 91 m) slow;
Wheelbase	15 ft 6 in (4.72 m)
Length	31 ft 2 in (9.50 m) over buffers
Width	8 ft 7 in (2.616 m)
Height	12 ft 3+1⁄16 in (3.735 m)
Frame type	Type: Inside; Length: 27 ft 6 in (8.38 m); Width: 8 ft 7 in (2.616 m);
Axle load	16 long tons 15 cwt (37,500 lb or 17 t); (18.8 short tons) full
Loco weight	47 long tons 10 cwt (106,400 lb or 48.3 t); (53.2 short tons) full
Fuel type	Coal
Fuel capacity	3 long tons 6 cwt (7,400 lb or 3.4 t); (3.7 short tons)
Water cap.	1,200 imp gal (5,500 L; 1,400 US gal)
Firebox:
• Grate area	15.3 sq ft (1.42 m2)
Boiler:;
• Model	GWR 2301
• Pitch	6 ft 11+3⁄4 in (2.127 m)
• Diameter	Barrel: 10 ft 3 in (3.12 m) ; Outside diameter: 4 ft 5 in (1.35 m) & 4 ft 3+7⁄8 in (1.318 m)
Boiler pressure	200 lbf/in2 (1.38 MPa)
Heating surface:
• Firebox	102.3 sq ft (9.50 m2)
• Tubes	1,075.7 sq ft (99.94 m2)
• Total surface	1,178.0 sq ft (109.44 m2)
Cylinders	Two, inside
Cylinder size	17.5 in × 24 in (444 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide valves
Train heating	steam
Loco brake	steam
Train brakes	vacuum
Safety systems	ATC
Tractive effort
Performance figures
Tractive effort	22,515 lbf (100.15 kN)
Operators
Career
Operators	GWR » BR, NCB, London Transport, Stephenson Clarke Ltd.
Power class	GWR: C; BR: 3F;
Numbers	See Numbering below
Axle load class	GWR: Blue until 1950, then Yellow
Withdrawn	1956–1971
Preserved	see #Preservation
Disposition	16 preserved, remainder scrapped
	^ 6700-49 – 4 chains (264 ft; 80 m) (normal) and 3+1⁄2 chains (231 ft; 70 m) (slow). ; ^ 8750 class – 17 long tons 0 cwt (38,100 lb or 17.3 t) ; (19.0 short tons), 9700 class – 17 long tons 4 cwt (38,500 lb or 17.5 t) ; (19.3 short tons). ; ^ 8750 class – 49 long tons 0 cwt (109,800 lb or 49.8 t) ; (54.9 short tons), and 9700 class – 50 long tons 15 cwt (113,700 lb or 51.6 t) ; (56.8 short tons). ; ^ 9700 class – 2 long tons 16 cwt (6,300 lb or 2.8 t); (3.1 short tons). ; ^ 9700 class – 1,230 imp gal (5,600 L; 1,480 US gal). ; ^ a b c 6700-79 were built for shunting only and were not fitted with ATC, vacuum braking, and steam heating. ;

The GWR 5700 Class (or 57xx class) is a class of 0-6-0PT steam locomotive built by the Great Western Railway (GWR) and British Railways (BR) between 1929 and 1950. With 863 built, they were the most prolific class of the GWR, and one of the most numerous classes of British steam locomotive.^[2]^[a]

Although officially designated by GWR as "light goods and shunting engines",^[3] they were also used for passenger working on branch, suburban, and shorter mainline journeys.

They were distributed across most of the GWR network and, after nationalisation of the railways in 1948, across the Western Region of British Railways, and also other regions.

The 5700s were not as large as the GWR Castles and Kings, but became just as much of an icon of the GWR due to their iconic design and quantity.^[4]

As a result of the 1955 Modernisation Plan, the 5700 Class was withdrawn from BR service between 1956 and 1966. Nineteen withdrawn locomotives were sold to the London Transport Executive and industry, of which ten were later preserved, along with six that were retrieved from scrapyards.

^ Champ, Jim (2018). An Introduction to Great Western Locomotive Development. Barnsley: Pen & Sword Transport. p. 319. ISBN 978-1-4738-7784-9. OCLC 1029234106. OL 26953051M.
^ le Fleming 1958, p. E78.
^ Jones 2014, p. 21.
^ Jones 2014, p. 39.

Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).

[1] 6700-49 – 4 chains (264 ft; 80 m) (normal) and 3+1⁄2 chains (231 ft; 70 m) (slow).

[2] 8750 class – 17 long tons 0 cwt (38,100 lb or 17.3 t)
(19.0 short tons), 9700 class – 17 long tons 4 cwt (38,500 lb or 17.5 t)
(19.3 short tons).

[3] 8750 class – 49 long tons 0 cwt (109,800 lb or 49.8 t)
(54.9 short tons), and 9700 class – 50 long tons 15 cwt (113,700 lb or 51.6 t)
(56.8 short tons).

[4] 9700 class – 2 long tons 16 cwt (6,300 lb or 2.8 t)
(3.1 short tons).

[5] 9700 class – 1,230 imp gal (5,600 L; 1,480 US gal).

[6700subclass-7] 6700-79 were built for shunting only and were not fitted with ATC, vacuum braking, and steam heating.

[6] Champ, Jim (2018). An Introduction to Great Western Locomotive Development. Barnsley: Pen & Sword Transport. p. 319. ISBN 978-1-4738-7784-9. OCLC 1029234106. OL 26953051M.

[FOOTNOTEle_Fleming1958E78-8] Fleming 1958, p. E78.

[FOOTNOTEJones201421-10] Jones 2014, p. 21.

[FOOTNOTEJones201439-11] Jones 2014, p. 39.

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