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. 1870 series: 4 ft 1 in (1.245 m) 1884 and 1894 series: 4 ft 7.5 in (1.410 m) Length 50 ft 7 in (15.42 m) Loco weight 1870 series: 39.45 long tons (40.08 t; 44.18 short tons) 1884 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. 2,500 imp gal (11,000 L; 3,000 US gal) Boiler pressure 1870 series: 140 psi (970 kPa) 1884 series: 160 psi (1,100 kPa) 1894 series: 170 psi (1,200 kPa) Cylinders two, outside Cylinder size 1870 and 1884 series: 18 in × 28 in (457 mm × 711 mm) 1894 series: 19.5 in × 28 in (495 mm × 711 mm)
Performance figures Tractive effort 1870 series: 11,129 lbf (49.50 kN) 1884 series: 12,719 lbf (56.58 kN) 1894 series: 15,680 lbf (69.75 kN)
Career Operators Great Northern Railway Class A1, A2, A3 Nicknames Stirling Single Eight–footer Withdrawn 1899-1916 Preserved No. 1 Current owner National Collection Disposition One preserved, remainder scrapped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]