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ALCO DL531 (RSD8)
New South Wales class 48 and South Australian class 830
Australia | 1959 | 212 produced
NSWGR 4807 in June 2022 in Bellambi
NSWGR 4807 in June 2022 in Bellambi
JenperTC

To change secondary lines in New South Wales from steam to diesel, AE Goodwin built the DL531 under ALCO license. With six axles, this had a weight of only 74 tons and a six-cylinder with 1,050 hp. Until 1970, the NSWGR received a total of 165 locomotives in standard gauge, which it designated as class 48. Otherwise it was also known as RSD8.

The South Australian Railways also bought 45 DL531 in three different gauges and designated them as class 830. The Silverton Tramway bought three, and customers were also found in Brazil, Peru and Pakistan. In Australia, many were retired from the state railways in the nineties and sold to private railways, many of which are still in use today.

General
Built1959-1970
ManufacturerAE Goodwin
Axle configC-C 
Gauge3 ft 6 in (Cape gauge), 4 ft 8 1/2 in (Standard gauge), 5 ft 3 in (Irish broad gauge)
Dimensions and Weights
Length44 ft 3 in
Service weight171,584 lbs
Adhesive weight171,584 lbs
Axle load28,672 lbs
Power
Power sourcediesel-electric
Top speed75 mph
EngineALCO 6-251B
Engine type6-cyl. diesel
Fuel841 us gal (diesel)
Engine output1,050 hp (783 kW)
Power Plant
Boiler
Calculated Values
diesel locomotive
freight
last changed: 01/2024
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