GNR Stirling 4-2-2

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GNR No. 1 class 4-2-2 Stirling Single
GNR 1008
Type and origin Power type Steam Designer Patrick Stirling Builder Doncaster Works Build date 1870-1895 Total produced 53
Specifications Configuration: ​  • Whyte 4-2-2 Gauge 4 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) Length 50 ft 7 in (15.42 m) Loco weight 39.45 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 type Coal Water cap. 2,500 imp gal (11,000 L; 3,000 US gal) Boiler pressure 140 psi (970 kPa) (1870 series); 160 psi (1,100 kPa) (1884 series); 170 psi (1,200 kPa) (1894 series); Cylinders two, outside Cylinder size 18 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 effort 11,129 lbf (49.50 kN) (1870 series) 12,719 lbf (56.58 kN) (1884 series) 15,680 lbf (69.75 kN) (1894 series)
Career Operators Great Northern Railway Class A1, A2, A3 Nicknames Stirling Single Eight–footer Withdrawn 1899-1916 Preserved No. 1 Current owner National Collection Disposition One preserved, remainder scrapped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).^[1] They could reach speeds of up to 85 mph (137 km/h).^[2]