GNR Stirling 4-2-2

Specifications
Specifications
Configuration:;
• Whyte	4-2-2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	1870: 3 ft 11 in (1.194 m); 1887: 3 ft 11.5 in (1.207 m)
Driver dia.	1870: 8 ft 1 in (2.464 m); 1887: 8 ft 1.5 in (2.477 m)
Trailing dia.	1870: 4 ft 1 in (1.245 m); 1877: 4 ft 7 in (1.397 m); 1887: 4 ft 7.5 in (1.410 m)
Length	1870 Series: 50 ft 2 in (15.29 m); 1894 Series: 52 ft 11.75 in (16.1481 m)
Loco weight	1870 series: 39.45 long tons (40.08 t; 44.18 short tons); 1880 series: 45.15 long tons (45.87 t; 50.57 short tons); 1894 series: 48.75 long tons (49.53 t; 54.60 short tons)
Fuel type	Coal
Water cap.	1870 Series: 2,470 imp gal (11,200 L; 2,970 US gal); 1880 Series: 2,900 imp gal (13,000 L; 3,500 US gal); 1894 Series: 3,850 imp gal (17,500 L; 4,620 US gal)
Boiler:;
• Diameter	1870 Series: 4 ft 0.5 in (1.232 m); 1880 and 1894 Series: 4 ft 2 in (1.270 m)
Boiler pressure	1870 Series: 140 psi (970 kPa); 1880 Series: 150 psi (1,000 kPa); 1894 Series: 170 psi (1,200 kPa)
Cylinders	two, outside
Cylinder size	1870 and 1880 Series: 18 in × 28 in (457 mm × 711 mm); 1894 Series: 19.5 in × 28 in (495 mm × 711 mm)

Type and origin
Type and origin
Power type	Steam
Designer	Patrick Stirling
Builder	Doncaster Works
Build date	1870–1895
Total produced	53

GNR (UK) No. 1 class 4-2-2
Stirling Single
GNR (UK) No. 1 class 4-2-2; Stirling Single
	GNR 1008
Power type
Type and origin
Power type	Steam
Designer	Patrick Stirling
Builder	Doncaster Works
Build date	1870–1895
Total produced	53
Configuration:;
Specifications
Configuration:;
• Whyte	4-2-2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	1870: 3 ft 11 in (1.194 m); 1887: 3 ft 11.5 in (1.207 m)
Driver dia.	1870: 8 ft 1 in (2.464 m); 1887: 8 ft 1.5 in (2.477 m)
Trailing dia.	1870: 4 ft 1 in (1.245 m); 1877: 4 ft 7 in (1.397 m); 1887: 4 ft 7.5 in (1.410 m)
Length	1870 Series: 50 ft 2 in (15.29 m); 1894 Series: 52 ft 11.75 in (16.1481 m)
Loco weight	1870 series: 39.45 long tons (40.08 t; 44.18 short tons); 1880 series: 45.15 long tons (45.87 t; 50.57 short tons); 1894 series: 48.75 long tons (49.53 t; 54.60 short tons)
Fuel type	Coal
Water cap.	1870 Series: 2,470 imp gal (11,200 L; 2,970 US gal); 1880 Series: 2,900 imp gal (13,000 L; 3,500 US gal); 1894 Series: 3,850 imp gal (17,500 L; 4,620 US gal)
Boiler:;
• Diameter	1870 Series: 4 ft 0.5 in (1.232 m); 1880 and 1894 Series: 4 ft 2 in (1.270 m)
Boiler pressure	1870 Series: 140 psi (970 kPa); 1880 Series: 150 psi (1,000 kPa); 1894 Series: 170 psi (1,200 kPa)
Cylinders	two, outside
Cylinder size	1870 and 1880 Series: 18 in × 28 in (457 mm × 711 mm); 1894 Series: 19.5 in × 28 in (495 mm × 711 mm)
Tractive effort
Performance figures
Tractive effort	1870 Series: 11,130 lbf (49.51 kN); 1880 Series: 11,925 lbf (53.05 kN); 1894 Series: 15,779 lbf (70.19 kN)
Operators
Career
Operators	Great Northern Railway
Class	A1, A2, A3
Nicknames	Stirling Single; Eight–footer;
Withdrawn	1899-1916
Preserved	No. 1
Current owner	National Collection
Disposition	One preserved, remainder scrapped

The Great Northern Railway (GNR) No. 1 class Stirling Single is a class of steam locomotive designed for express passenger work. Designed by Patrick Stirling, they are characterised by a single pair of large (8 ft 1 in) driving wheels which led to the nickname "eight-footer". Originally the locomotive was designed to haul up to 26 passenger carriages at an average speed of 47 miles per hour (76 km/h). They could reach speeds of up to 85 mph (137 km/h).