GWR 1400 Class

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 the 4800 Class when introduced in 1932, and renumbered in 1946.

GWR 4800 class (later 1400 class)
1445 freshly painted at Swindon Works in 1950
Type and origin
Power typeSteam
DesignerCharles Collett
BuilderGreat Western Railway, Swindon Works
Order numberLots 279, 287, 288
Build date1932–1936
Total produced75
Specifications
Configuration:
  Whyte0-4-2T
  UICB1 nt
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Driver dia.5 ft 2 in (1.575 m)
Trailing dia.3 ft 8 in (1.118 m)
Wheelbase15 ft 6 in (4.72 m)
Length29 ft 11 in (9.12 m)
Width8 ft 7 in (2.616 m)
Height12 ft 6+14 in (3.816 m)
Axle load13 long tons 18 cwt (31,100 lb or 14.1 t)
(15.6 short tons) full
Adhesive weight27 long tons 8 cwt (61,400 lb or 27.8 t)
(30.7 short tons) full
Loco weight41 long tons 6 cwt (92,500 lb or 42 t)
(46.3 short tons) full
Fuel typeCoal
Fuel capacity2 long tons 13 cwt (5,900 lb or 2.7 t)
(3.0 short tons)
Water cap.800 imp gal (3,600 L; 960 US gal)
Firebox:
  Grate area12.8 sq ft (1.19 m2)
BoilerGWR 4800
Boiler pressure165 psi (1.14 MPa)
Heating surface:
  Firebox83.2 sq ft (7.73 m2)
  Tubes869.8 sq ft (80.81 m2)
SuperheaterNone
CylindersTwo, inside
Cylinder size16 in × 24 in (406 mm × 610 mm)
Valve gearStephenson
Valve typeSlide valves
Train heatingSteam
Train brakesVacuum
Performance figures
Tractive effort13,900 lbf (62 kN)
Career
Operators
Class4800, later 1400
Power classGWR: Unclassified,
BR: 1P
Numbers4800–4874, later 1400–1474
Axle load classGWR: Unclassified
LocaleWestern Region branch lines
Withdrawn1956–1965
Preserved1420, 1442, 1450, 1466
DispositionFour preserved, remainder scrapped

Although credited to Charles Collett, the design dated back to 1868 with the introduction of the George Armstrong 517 class.

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