South Australian Railways S class

The South Australian Railways S class was a class of 4-4-0 steam locomotives operated by the South Australian Railways.

South Australian Railways S class
S131 at Murray Bridge in March 1951
Type and origin Power type Steam Builder James Martin & Co Serial number 71–76, 93–98, 176–181 Build date 1894 (12), 1903–1904 (6) Total produced 18 Rebuilder Islington Railway Workshops Rebuild date 1915 (No. 13) Number rebuilt 1
Specifications Configuration: ​  • Whyte 4-4-0 (2′B 2′2′) Gauge 1,600 mm (5 ft 3 in) Driver dia. 6 ft 6 in (1.981 m) Length 57 ft ^5⁄8 in (17.389 m) Height 4.0386 Metres Axle load 12 tons 15 cwt Loco weight 87,360 lb (39,625.829 kg) Tender weight 96,746 lb (43,883.247 kg) Total weight 184,106 lb (83,509.077 kg) Fuel type Coal Fuel capacity 7 tons 16 cwt, 4 tons 18 cwt 3qtr (6 wheel tender) Water cap 4,120 gallons, 2,040 gallons (6 wheel tender) Firebox:  • Firegrate area 17.37 square feet Boiler pressure 150 psi (1,034 kPa) Heating surface:  • Tubes 1,038 square feet  • Firebox 100.24 square feet Cylinders 2 Cylinder size 18 in × 24 in (457 mm × 610 mm) Valve gear Stephenson
Performance figures Tractive effort 12,711 lbf (56.54 kN)
Career Operators South Australian Railways Class S Numbers 11, 13, 14, 17, 26, 50, 127-137, 154 First run 26.2.1894 Withdrawn 1942-1960 Scrapped 1956-1961 Disposition all scrapped

History

The S Class locomotives were designed as an express locomotive for the route between Murray Bridge and the border with Victoria. The first 12 were delivered by James Martin & Co in 1894, followed by a further six in 1903/04. They type was notably used to haul the Melbourne Express. The S class had 6'6" driving wheels, the largest of any Australian locomotive, to give it high speeds on low grades.[1][2][3]

The engines were pushed out of main line service in the 1920s by 600 class locomotives and Brill railcars. They continued to serve on secondary services into the 1950s. Some locomotives even served in shunting duties despite being unsuitable due to their large wheel diameter. The last examples were retired in 1961.[1][3]

S136 was set aside for preservation at Islington Railway Workshops while moves were made to preserve it. These fell through and it was scrapped.[3]

References

1. Llanso, Steve. "South Australian Railways 4-4-0 Locomotives". SteamLocomotive.com. Retrieved 20 July 2015.
2. Drymalik, Chris. "S class". Chris's Commonwealth Railways Information (ComRails). Retrieved 20 July 2015.
3. Oberg, Leon (1984). Locomotives of Australia 1850s-1980s. Frenchs Forest: Reed Books. pp. 72/73. ISBN 0 7301 0005 7.

External links

Media related to South Australian Railways S class at Wikimedia Commons