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GWR 4300 Class information


Great Western Railway 4300 Class
6304 at Over Junction, Gloucester
Type and origin
Power typeSteam
Builder
  • GWR Swindon Works (307)
  • Robert Stephenson & Co. (35)
Order numberLots 183, 193, 194, 198, 202, 204–209, 211, 212, 218, 222, 230, 276
Serial number
  • Swindon: 2396–2415, 2516–2535, 2552–2571, 2612–2631, 2652–2761, 2790–2841, 2887–2906
  • RS&C: 3802–3836
Build date1911–1932
Total produced342
Specifications
Configuration:
​
 • Whyte2-6-0
 • UIC1′C h2
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.3 ft 2 in (0.965 m)
Driver dia.5 ft 8 in (1.727 m)
Minimum curve6 chains (400 ft; 120 m) normal,
5 chains (330 ft; 100 m) slow
Length58 ft 1+1⁄4 in (17.71 m)
Width8 ft 11 in (2.718 m)
Height13 ft 0 in (3.962 m)
Axle load17.60 long tons (17.88 t; 19.71 short tons)
Adhesive weight52 long tons 0 cwt (116,500 lb or 52.8 t)
(52.8 t; 58.2 short tons)
Loco weight62 long tons 0 cwt (138,900 lb or 63 t)
(63.0 t; 69.4 short tons)
Tender weight40 long tons 0 cwt (89,600 lb or 40.6 t)
(40.6 t; 44.8 short tons)
Fuel capacity7 long tons 0 cwt (15,700 lb or 7.1 t)
(7.1 t; 7.8 short tons)
Water cap.3,500 imp gal (16,000 L; 4,200 US gal)
Firebox:​
 • Grate area20.56 sq ft (1.910 m2)
BoilerGWR Standard No. 4
Boiler pressure200 psi (1.38 MPa)
Heating surface:​
 • Firebox128.72 sq ft (11.958 m2)
 • Tubes1,349.64 sq ft (125.386 m2)
Superheater:
​
 • Heating area191.88 sq ft (17.826 m2)
CylindersTwo, outside
Cylinder size18+1⁄2 in × 30 in (470 mm × 762 mm)
Performance figures
Tractive effort25,670 lbf (114.19 kN)
Career
OperatorsGreat Western Railway,
British Railways
Power classGWR: D; BR: 4MT
Numbers4300–4399, 5300–5399, 6300–6399, 7300–7321, 9300–9319
Axle load classGWR: 4300–7300s Blue; 8300–9300s: Red
LocaleGreat Britain
First run1911
Withdrawn1936–1964
DispositionTwo preserved, remainder scrapped

The Great Western Railway (GWR) 4300 Class is a class of 2-6-0 (mogul) steam locomotives, designed by G.J. Churchward for mixed traffic duties. 342 were built from 1911–1932.

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