GNR Stirling 4-2-2

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).

GNR No. 1 class 4-2-2
Stirling Single
GNR 1008
Type and origin
Power typeSteam
DesignerPatrick Stirling
BuilderDoncaster Works
Build date1870-1895
Total produced53
Specifications
Configuration:
​
 • Whyte4-2-2
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.3 ft 11.5 in (1.207 m)
Driver dia.8 ft 1 in (2.464 m)
Trailing dia.4 ft 1 in (1.245 m) (1870 series);
4 ft 7.5 in (1.410 m) (1884 and 1894 series)
Length50 ft 7 in (15.42 m)
Loco weight39.45 long tons (40.08 t; 44.18 short tons) (1870 series);
45.15 long tons (45.87 t; 50.57 short tons) (1884 series);
48.75 long tons (49.53 t; 54.60 short tons) (1894 series)
Fuel typeCoal
Water cap.2,500 imp gal (11,000 L; 3,000 US gal)
Boiler pressure140 psi (970 kPa) (1870 series);
160 psi (1,100 kPa) (1884 series);
170 psi (1,200 kPa) (1894 series);
Cylinderstwo, outside
Cylinder size18 in × 28 in (457 mm × 711 mm) (1870 and 1884 series);
19.5 in × 28 in (495 mm × 711 mm) (1894 series)
Performance figures
Tractive effort11,129 lbf (49.50 kN) (1870 series)
12,719 lbf (56.58 kN) (1884 series)
15,680 lbf (69.75 kN) (1894 series)
Career
OperatorsGreat Northern Railway
ClassA1, A2, A3
Nicknames
  • Stirling Single
  • Eight–footer
Withdrawn1899-1916
PreservedNo. 1
Current ownerNational Collection
DispositionOne preserved, remainder scrapped
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