South Australian Railways 700 class (diesel)

Specifications
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1435 mm (4 ft 8+1⁄2 in); 1600 mm (5 ft 3 in)
Wheel diameter	1020 mm (3 ft 4 in)
Length	Over coupler pulling faces: ; 18.67 m (61 ft 3 in)
Axle load	18.6 t; (18.31 long tons; 20.50 short tons)
Loco weight	111.6 t; (109.84 long tons; 123.02 short tons)
Fuel type	Diesel
Fuel capacity	5455 L; (1200 imp gal; 1441 US gal)
Prime mover	Alco 251C
Engine type	Four-stroke V12 diesel
Aspiration	Turbocharged
Cylinders	12
Cylinder size	229 mm × 267 mm; (9 in × 11 in)

South Australian Railways 700 class
South Australian Railways 700 class
	703 on delivery to the National Railway Museum, Port Adelaide by donor One Rail Australia, January 2023
Power type
Type and origin
Power type	Diesel-electric
Builder	AE Goodwin, Auburn
Serial number	Alco G-6042-01 to G-6042-03; Alco G-6059-01 to G-6059-03
Model	Alco DL 500G
Build date	1971–1972
Total produced	6
Configuration:;
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1435 mm (4 ft 8+1⁄2 in); 1600 mm (5 ft 3 in)
Wheel diameter	1020 mm (3 ft 4 in)
Length	Over coupler pulling faces: ; 18.67 m (61 ft 3 in)
Axle load	18.6 t; (18.31 long tons; 20.50 short tons)
Loco weight	111.6 t; (109.84 long tons; 123.02 short tons)
Fuel type	Diesel
Fuel capacity	5455 L; (1200 imp gal; 1441 US gal)
Prime mover	Alco 251C
Engine type	Four-stroke V12 diesel
Aspiration	Turbocharged
Cylinders	12
Cylinder size	229 mm × 267 mm; (9 in × 11 in)
Maximum speed
Performance figures
Maximum speed	112 km/h (70 mph)
Power output	Gross: 1490 kW (2000 hp),
Tractive effort	Continuous: 311.00 kN (69,916 lbf) at 11 km/h (6.8 mph),; Starting: 389.00 kN (87,451 lbf)
Operators
Career
Operators	South Australian Railways, Australian National, One Rail Australia and predecessors
Number in class	6
Numbers	700–705 (700 later renumbered to 706)
First run	22 June 1971
Last run	2015
Preserved	701, 703, 704 (operational or to be made operational), 705 (static display)
Disposition	4 preserved, 2 scrapped

The 700 class is a class of six diesel-electric locomotives based on the Alco DL500G model, built by AE Goodwin, Auburn, New South Wales for the South Australian Railways. They are virtually identical to the New South Wales 442 class locomotive.