For other GWR engine classes called 'County', see GWR County Class.
GWR 1000 "County" class
1013 County of Dorset at Gloucester Eastgate railway station, 1953.
Type and origin
Power type
Steam
Designer
Frederick Hawksworth
Builder
GWR Swindon Works
Order number
Lots 354, 358
Build date
August 1945 – April 1947
Total produced
30
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.
6 ft 3 in (1,905 mm)
Minimum curve
8 chains (528 ft; 161 m) normal, 7 chains (462 ft; 141 m) slow
Length
63 ft 0+1⁄4 in (19.21 m)
Width
8 ft 11+1⁄8 in (2.721 m)
Height
13 ft 5 in (4.089 m)
Axle load
19 long tons 14 cwt (44,100 lb or 20 t) (22.1 short tons) full
Adhesive weight
59 long tons 2 cwt (132,400 lb or 60 t) (66.2 short tons) full
Loco weight
76 long tons 17 cwt (172,100 lb or 78.1 t) (86.1 short tons)full
Tender weight
49 long tons 0 cwt (109,800 lb or 49.8 t) (54.9 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.
4,000 imp gal (18,000 L; 4,800 US gal)
Firebox:
• Grate area
28.84 sq ft (2.679 m2)
Boiler
GWR Standard No. 15[1]
Boiler pressure
280 psi (1.93 MPa) later reduced to 250 psi (1.72 MPa)
Heating surface:
• Firebox
169.0 sq ft (15.70 m2)
• Tubes and flues
1,545.0 sq ft (143.54 m2)
Superheater:
• Heating area
254.0 sq ft (23.60 m2)
Cylinders
Two, outside
Cylinder size
18.5 in × 30 in (470 mm × 762 mm)
Valve gear
Stephenson
Valve type
piston valves
Performance figures
Tractive effort
32,580 lbf (144.92 kN), later reduced to 29,090 lbf (129.40 kN)
Career
Operators
Great Western Railway British Railways
Class
GWR: 1000
Power class
GWR: D BR: 6MT
Numbers
1000–1029
Axle load class
GWR: Red
Retired
September 1962 – November 1964
Disposition
All original locomotives scrapped; replica under construction
The Great Western Railway 1000 Class or County Class was a class of 4-6-0 steam locomotive. Thirty examples were built between 1945 and 1947, but all were withdrawn and scrapped in the early 1960s. A replica locomotive is under construction.
^Champ, Jim (2018). An Introduction to Great Western Locomotive Development. Barnsley: Pen & Sword Transport. p. 320. ISBN 978-1-4738-7784-9. OCLC 1029234106. OL 26953051M.
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