8 chains (530 ft; 160 m) normal, 7 chains (460 ft; 140 m) slow
Length
65 ft 2 in (19.86 m) over buffers
Width
8 ft 11 in (2.718 m)
Height
13 ft 4+1⁄2 in (4.077 m)
Axle load
19 long tons 14 cwt (44,100 lb or 20 t) 22.1 short tons full
Adhesive weight
58 long tons 17 cwt (131,800 lb or 59.8 t) 65.9 short tons full
Loco weight
79 long tons 17 cwt (178,900 lb or 81.1 t) 89.4 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
Churchward tender: 7 long tons (7.1 t; 7.8 short tons)
Collett/Hawksworth tender: 6 long tons (6.1 t; 6.7 short tons)
Water cap.
Churchward tender:
3,500 imp gal (16,000 L; 4,200 US gal)
Collett/Hawksworth tender: 4,000 imp gal (18,000 L; 4,800 US gal)
Firebox:
• Grate area
29.36 sq ft (2.728 m2)
Boiler
GWR Standard No. 8[1]
Boiler pressure
225 lbf/in2 (1.55 MPa)
Heating surface:
• Firebox
162.7 sq ft (15.12 m2) (Collett)
163.5 sq ft (15.19 m2) (Hawksworth)
• Tubes
1,857.7 sq ft (172.59 m2) (Collett)
1,799.5 sq ft (167.18 m2) (Hawksworth)
Superheater:
• Type
14-element "Swindon" (Collett)
21-element (Hawksworth)
• Heating area
262.6 sq ft (24.40 m2) (Collett)
295.0 sq ft (27.41 m2) (Hawksworth)
Cylinders
Four (two inside, two outside)
Cylinder size
16 in × 26 in (406 mm × 660 mm)
Valve gear
Inside cylinders: Walschaerts
Outside cylinders: derived from inside cylinders via rocking bars.
Valve type
Piston valves
Performance figures
Tractive effort
31,625 lbf (140.68 kN)
Career
Operators
Great Western Railway
British Railways
Power class
GWR: D
BR: 7P
Numbers
4073–4099; 5000–5099; 7000–7037.
Axle load class
GWR: Red
Locale
Great Western Main Line
Withdrawn
May 1950 to December 1965
Disposition
Eight preserved, remainder scrapped
The 4073 or Castle Class are 4-6-0 steam locomotives of the Great Western Railway, built between 1923 and 1950.[2] They were designed by the railway's Chief Mechanical Engineer, Charles Collett, for working the company's express passenger trains. They could reach speeds of up to 100 mph (160 km/h).[3]
The 4073 or Castle Class are 4-6-0 steam locomotives of the Great Western Railway, built between 1923 and 1950. They were designed by the railway's Chief...
Below is a list of all 171 GWR Castle Class engines, built between August 1923 and August 1950. Five of these were converted to burn oil for a short period...
GWR4073Class No. 7029 Clun Castle is a 4-6-0 steam locomotive built at Swindon Works in May 1950 to a design by Charles Collett for operation on the...
GWR4073 "Castle" Class No. 4079 Pendennis Castle is a 4-6-0 steam locomotive built in 1924 for the Great Western Railway (GWR) at Swindon Works to a design...
Caerphilly Castle is a member of the GWR4073Class built in August 1923. The lead locomotive of its class, after a brief period of running-in service...
website". Wikimedia Commons has media related to GWR4073Class 5051 Earl Bathurst. 'Castle' class details, 5050 - 5099 Great Western Archive The Devonian...
GWR4073Class 5080 Defiant is a GWR4073Class steam locomotive built for the Great Western Railway at Swindon Works in May 1939. It was originally named...
via PressReader. Wikimedia Commons has media related to GWR4073Class 7027 Thornbury Castle. 'Castle' class details, 7000 - 7037 Great Western Archive...
GWR4073Class 5029 Nunney Castle is a Great Western Railway Castle Class steam locomotive. It was built at the GWR's Swindon Works in 1934, being outshopped...
The GWR4073Class 5043 Earl of Mount Edgcumbe is a steam locomotive of the GWR 'Castle' Class, built in March 1936. It was originally named Barbury Castle...
newspaper train, hauled by GWR4073Class 4-6-0 No. 5009 Shrewsbury Castle, collided with the wreckage. Withdrawal of the class began in June 1962 with No...
carried the name plates from GWR4073Class No. 5060. It carried its post-WW2 9017 plates until the BR withdrawal of GWR 0-6-0 No.3217, when it was reunited...
The Great Western Railway (GWR) 6000 Class or King Class is a class of 4-6-0 steam locomotives designed for express passenger work and introduced in 1927...
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...
Railway (GWR) was well served with express passenger locomotives of the Saint and Star classes and had recently introduced the Castle Class. However,...
Great Western Railway 4073 Castle class 4-6-0 steam locomotive built at the former GWR Swindon Works on 19 May 1950. The Castle Class locomotives were built...
successful class which established the design principles for GWR 2-cylinder classes over the next fifty years, and influenced similar classes on other British...
Star Class locomotives could no longer cope with increasing loads. Others have referred to a statement made to the GWR board in 1906 about the GWR-designed...
'Halls', and large ex-mainline diesel engines. Following the purchase of GWR Castle Class No.7029 Clun Castle in January 1966 by Patrick Whitehouse, the locomotive...
The GWR 1400 Class is a class of steam locomotive designed by the Great Western Railway for branch line passenger work. It was originally classified as...
was in a head-on collision with an express passenger train, hauled by GWR4073Class 4-6-0 No. 4091 Dudley Castle, at Slough, Berkshire. Five people were...
point. The founders and commercial backers of the Great Western Railway (GWR) supported Isambard Kingdom Brunel's scheme to develop an integrated railway...
and other guests followed in a separate one. The train was pulled by GWR4073Class locomotive 7013 Bristol Castle, though it carried the nameplates of...
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...
another is assigned. SR Class U 31625 is TOPS 98426 as it would otherwise duplicate GWR 7325 (TOPS 98425), BR Standard Class 8 71000 Duke of Gloucester...
Although the 4 ft 8+1⁄2 in (1,435 mm) 3001 class were fitted with larger boilers than earlier GWR 2-2-2 classes, the diameter of the boiler was constrained...
The Great Western Railway (GWR) 2800 Class is a class of Churchward-designed 2-8-0 steam locomotive. The class was designed by George Jackson Churchward...
comprise several classes of locomotives designed by Daniel Gooch, Superintendent of Locomotive Engines for the Great Western Railway (GWR) from 1837 to 1864...
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