South Australian Railways 750 class

The South Australian Railways 750 class was a class of 2-8-2 steam locomotives operated by the South Australian Railways.

South Australian Railways 750 Class
Preserved 752 at the National Railway Museum, Port Adelaide, 2014
Type and origin
Power typeSteam
BuilderNorth British Locomotive Company
Build date1950/51
Total produced10
Specifications
Configuration:
​
 • Whyte2-8-2 1′D1′ 2′2′
Gauge1,600 mm (5 ft 3 in)
Leading dia.3 ft 1.4 in (950 mm)
Driver dia.4 ft 7.75 in (1,416 mm)
Trailing dia.3 ft 1.4 in (950 mm)
Length67 ft 5 in (20.55 m)
Height13 ft 11 3⁄8 in (4,251.3 mm)
Axle load13 long tons 17 cwt (31,000 lb or 14.1 t)
Adhesive weight54.65 long tons 0 cwt (122,400 lb or 55.5 t)
Loco weight76.00 long tons 0 cwt (170,200 lb or 77.2 t)
Tender weight48.655 long tons 0 cwt (109,000 lb or 49.4 t)
Total weight124 long tons 65 cwt (285,000 lb or 129.3 t)
Fuel typeCoal
Fuel capacity6 long tons 0 cwt (13,400 lb or 6.1 t)
Water cap4,600 imp gal
(5,500 US gal; 21,000 L)
Firebox:
 • Firegrate area		31 sq ft (2.9 m2)
Boiler pressure175 psi (1,207 kPa)
Heating surface:
 • Tubes		1,250 sq ft (116 m2)
 • Firebox203 sq ft (18.9 m2)
Superheater:
​
 • Heating area324 sq ft (30.1 m2)
Cylinders2
Cylinder size20 in × 26 in (508 mm × 660 mm)
Valve gearWalschaerts
Valve typePiston
Performance figures
Tractive effort28,650 lbf (127.44 kN)
Factor of adh.4.27
Career
OperatorsSouth Australian Railways
Class750
Number in class10
Numbers750-759
First run11/12/1950 On V.R.
5/1/1951 On S.A.R.
Withdrawn1961-1969
Preserved752
Scrapped1962-1967
Disposition1 preserved, 9 scrapped

History

With an acute shortage of motive power following World War II, the South Australian Railways were able to purchase 10 Victorian Railways N class locomotives in 1951 which had been in service for only a few months. They replaced Rx class locomotives on branch line services particularly over the light lines in the Murray Mallee radiating from Tailem Bend. Withdrawals began in July 1961 with the last withdrawn in September 1967.[1]

The National Railway Museum, Port Adelaide has preserved 752 After running the last passenger train to Willunga in 1969.[2]

References
  1. Oberg, Leon (1984). Locomotives of Australia 1850s-1980s. Frenchs Forest: Reed Books. p. 140. ISBN 0730100057.
  2. 752 National Railway Museum

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