GWR 4500 Class

GWR 4500 Class
4569 at Dawlish in 1954
Type and origin
Power typeSteam
DesignerGeorge Jackson Churchward
Builder
  • Wolverhampton Works (20)
  • Swindon Works (55)
Order number
  • Wolverhampton: Lot N3
  • Swindon: Lots 174, 191, 201, 226
Serial number
  • Wolverhampton 775–794
  • Swindon: 2310–2319, 2496–2505, 2597–2611
Build date1906–1924
Total produced75
Specifications
Configuration:
 • Whyte2-6-2T
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Driver dia.4 ft 7+12 in (1.410 m)
Loco weight57 long tons (58 t; 64 short tons)
Fuel typeCoal
Fuel capacityOriginally: 3 long tons 0 cwt (6,700 lb or 3 t)
From 1924 onwards: 3 long tons 14 cwt (8,300 lb or 3.8 t)
Water cap.1,000 imp gal (4,500 L; 1,200 US gal)
Boiler:
 • TypeStandard 5[1]
Boiler pressure200 psi (1.4 MPa)
CylindersTwo, outside
Cylinder size17 in × 24 in (432 mm × 610 mm)
Performance figures
Tractive effort21,250 lbf (94.5 kN)
Career
Operators
Class4500
Power class
  • GWR: C
  • BR: 4MT
Axle load classGWR: Yellow
LocaleWestern Region
WithdrawnFebruary 1950 – September 1964
DispositionThree preserved, remainder scrapped

The Great Western Railway (GWR) 4500 Class or Small Prairie is a class of 2-6-2T steam locomotives.

  1. ^ 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.