South Australian Railways 350 class locomotive
Locomotive no. 351 is preserved as a static display at the Milang Historical Railway Museum, where visitors can "drive" it on a driving simulator using the full-size controls
Type and origin Power type Diesel-electric Builder Islington Railway Workshops Build date 1949 Total produced 2
Specifications Configuration: ​  • UIC Bo-Bo Gauge 1,600 mm (5 ft 3 in) Wheel diameter 3 ft (914 mm) Wheelbase 26 ft (7.925 m) total, 7 ft (2.134 m) bogie Length 35 ft (10.668 m) over headstocks Width 9 ft 5+1⁄5 in (2.875 m) Height 13 ft 3+3⁄8 in (4.048 m) Axle load 12.3 long tons (12.5 t; 13.8 short tons) Loco weight 49.5 long tons (50.3 t; 55.4 short tons) Fuel type Diesel Fuel capacity 300 imp gal (1,400 L; 360 US gal) Lubricant cap. 65 imp gal (300 L; 78 US gal) Prime mover English Electric 6KT Engine type Four-stroke 6 in line diesel Aspiration Natural Generator EE506D Traction motors Four Cylinders 6 Inline Cylinder size 10 in × 12 in (254 mm × 305 mm) Loco brake Air Train brakes Air
Performance figures Maximum speed 17 miles per hour (27 km/h) Power output 350 hp (260 kW) gross Tractive effort: ​  • Starting 23,400 lbf (104.1 kN)  • Continuous 8,800 lbf (39.1 kN) at 8 mph (10 km/h)
Career Operators South Australian Railways Number in class 2 Numbers 350, 351 First run 7 June 1949 Preserved 350, 351 Disposition 2 preserved

The South Australian Railways 350 class comprised two diesel-electric locomotives built by the railway's Islington Railway Workshops, entering service in June 1949. They were the first diesel-electric locomotives built in Australia and the first to be operated by the South Australian Railways.

Locomotives number 350 and 351 spent much of their service life working in their design role as shunting locomotives – in Adelaide yard, Islington Railway Workshops, Mile End goods yard and Mount Gambier station yard. In March 1978 they were included in the transfer of South Australian Railways assets to Australian National.^[1]

Both locomotives were withdrawn in 1979. Railway historical group SteamRanger bought 350 and still owns the locomotive, operating it as a depot shunter; its very low continuous tractive effort necessitates a 150-tonne load limit when it pulls a train on the Victor Harbor–Strathalbyn section of the railway.^[1]

A preservation group at Moonta bought 351 for a proposed heritage railway venture that did not come to fruition. Subsequently, the Australian Railway Historical Society (now SteamRanger) bought it and restored it to operating condition at its depot, then at Dry Creek, before deploying it to Goolwa for use on the Victor Harbor Tourist Railway. After mechanical problems occurred it was placed on permanent loan to the National Railway Museum at Port Adelaide, where it remained for 25 years. In 2015 it was gifted to the Milang Historical Railway Museum. Following cosmetic restoration it is now a key element of the museum's outdoor static displays, especially since the installation of a locally developed driving simulator in the cab, which can be operated by visitors.^{[note 1][1]}

South Australian Railways Diagram LD-32 https://sarplans.steam4me.net/images/SAR_Rollingstock_14.gif