Silverton Tramway 48s class

Specifications
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1,067 mm (3 ft 6 in),; 1,435 mm (4 ft 8+1⁄2 in) standard gauge
Wheel diameter	40 in (1,016 mm)
Length	Over headstocks:; 44 ft 3 in (13.49 m); Over coupler pulling faces:; 48 ft 5 in (14.76 m)
Width	9 ft 9 in (2,972 mm)
Height	14 ft 0 in (4,267 mm)
Axle load	12 long tons 6 cwt (27,600 lb or 12.5 t)
Loco weight	74 long tons 0 cwt (165,800 lb or 75.2 t)
Fuel type	Diesel
Fuel capacity	500 imp gal; (2,300 L; 600 US gal)
Lubricant cap.	116 imp gal; (530 L; 139 US gal)
Coolant cap.	90 imp gal; (410 L; 110 US gal)
Sandbox cap.	10 cu ft (0.28 m3)
Prime mover	Alco 6-251B
RPM range	375–1025
Engine type	Four-stroke inline 6 diesel
Aspiration	Turbocharged
Generator	General Electric 5GT 584
Traction motors	General Electric 761
Cylinders	6
Cylinder size	9 in × 10.5 in; (229 mm × 267 mm)

Silverton Tramway 48s class
Silverton Tramway 48s class
Power type
Type and origin
Power type	Diesel-electric
Builder	AE Goodwin, Auburn
Serial number	Alco 83826-83828
Model	Alco DL531
Build date	1960–1961
Total produced	3
Configuration:;
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1,067 mm (3 ft 6 in),; 1,435 mm (4 ft 8+1⁄2 in) standard gauge
Wheel diameter	40 in (1,016 mm)
Length	Over headstocks:; 44 ft 3 in (13.49 m); Over coupler pulling faces:; 48 ft 5 in (14.76 m)
Width	9 ft 9 in (2,972 mm)
Height	14 ft 0 in (4,267 mm)
Axle load	12 long tons 6 cwt (27,600 lb or 12.5 t)
Loco weight	74 long tons 0 cwt (165,800 lb or 75.2 t)
Fuel type	Diesel
Fuel capacity	500 imp gal; (2,300 L; 600 US gal)
Lubricant cap.	116 imp gal; (530 L; 139 US gal)
Coolant cap.	90 imp gal; (410 L; 110 US gal)
Sandbox cap.	10 cu ft (0.28 m3)
Prime mover	Alco 6-251B
RPM range	375–1025
Engine type	Four-stroke inline 6 diesel
Aspiration	Turbocharged
Generator	General Electric 5GT 584
Traction motors	General Electric 761
Cylinders	6
Cylinder size	9 in × 10.5 in; (229 mm × 267 mm)
Maximum speed
Performance figures
Maximum speed	75 mph (121 km/h)
Power output	Gross:; 1,050 hp (780 kW); For traction:; 950 hp (710 kW)
Tractive effort	Continuous:; 40,200 lbf (178.82 kN); at 8 mph (13 km/h)
Operators
Career
Operators	Silverton Tramway Company
Number in class	3
Numbers	27–29
First run	December 1960
Current owner	Genesee & Wyoming Australia; Southern Shorthaul Railroad
Disposition	2 in service, 1 scrapped

The Silverton Tramway 48s class are a class of diesel locomotives built by AE Goodwin, Auburn for the Silverton Tramway in 1960–1961. The State Rail Authority 48 class and South Australian Railways 830 class are of a very similar design.