GWR 1400 Class

Specifications
Specifications
Configuration:;
• Whyte	0-4-2T
• UIC	B1 nt
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 2 in (1.575 m)
Trailing dia.	3 ft 8 in (1.118 m)
Wheelbase	15 ft 6 in (4.72 m)
Length	29 ft 11 in (9.12 m)
Width	8 ft 7 in (2.616 m)
Height	12 ft 6+1⁄4 in (3.816 m)
Axle load	13 long tons 18 cwt (31,100 lb or 14.1 t); (15.6 short tons) full
Adhesive weight	27 long tons 8 cwt (61,400 lb or 27.8 t); (30.7 short tons) full
Loco weight	41 long tons 6 cwt (92,500 lb or 42 t); (46.3 short tons) full
Fuel type	Coal
Fuel capacity	2 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 area	12.8 sq ft (1.19 m2)
Boiler	GWR 4800
Boiler pressure	165 psi (1.14 MPa)
Heating surface:
• Firebox	83.2 sq ft (7.73 m2)
• Tubes	869.8 sq ft (80.81 m2)
Superheater	None
Cylinders	Two, inside
Cylinder size	16 in × 24 in (406 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide valves
Train heating	Steam
Train brakes	Vacuum

Type and origin
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	Great Western Railway, Swindon Works
Order number	Lots 279, 287, 288
Build date	1932–1936
Total produced	75

GWR 4800 class (later 1400 class)
GWR 4800 class (later 1400 class)
	1445 freshly painted at Swindon Works in 1950
Power type
Type and origin
Power type	Steam
Designer	Charles Collett
Builder	Great Western Railway, Swindon Works
Order number	Lots 279, 287, 288
Build date	1932–1936
Total produced	75
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-2T
• UIC	B1 nt
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	5 ft 2 in (1.575 m)
Trailing dia.	3 ft 8 in (1.118 m)
Wheelbase	15 ft 6 in (4.72 m)
Length	29 ft 11 in (9.12 m)
Width	8 ft 7 in (2.616 m)
Height	12 ft 6+1⁄4 in (3.816 m)
Axle load	13 long tons 18 cwt (31,100 lb or 14.1 t); (15.6 short tons) full
Adhesive weight	27 long tons 8 cwt (61,400 lb or 27.8 t); (30.7 short tons) full
Loco weight	41 long tons 6 cwt (92,500 lb or 42 t); (46.3 short tons) full
Fuel type	Coal
Fuel capacity	2 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 area	12.8 sq ft (1.19 m2)
Boiler	GWR 4800
Boiler pressure	165 psi (1.14 MPa)
Heating surface:
• Firebox	83.2 sq ft (7.73 m2)
• Tubes	869.8 sq ft (80.81 m2)
Superheater	None
Cylinders	Two, inside
Cylinder size	16 in × 24 in (406 mm × 610 mm)
Valve gear	Stephenson
Valve type	Slide valves
Train heating	Steam
Train brakes	Vacuum
Tractive effort
Performance figures
Tractive effort	13,900 lbf (62 kN)
Operators
Career
Operators	Great Western Railway; British Railways;
Class	4800, later 1400
Power class	GWR: Unclassified,; BR: 1P
Numbers	4800–4874, later 1400–1474
Axle load class	GWR: Unclassified
Locale	Western Region branch lines
Withdrawn	1956–1965
Preserved	1420, 1442, 1450, 1466
Disposition	Four preserved, remainder scrapped

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.

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