Silverton Tramway 48s class
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| 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 |
| 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 : 44 ft 3 in (13.49 m) Over coupler pulling faces: 48 ft 5 in (14.76 m) |
| Width | 9 ft 9 in (2.97 m) |
| Height | 14 ft 0 in (4.27 m) |
| 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) |
| 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) |
| 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.
Between December 1960 and September 1961, the Silverton Tramway Company took delivery of three Alco DL531 locomotives from AE Goodwin, Auburn painted red and white numbered 27 to 29. They were the same as the 48 class and 830 class locomotives. All were delivered for use on the 56 kilometre Silverton Tramway narrow gauge line from Broken Hill to Cockburn.
After the Silverton Tramway was replaced by a new standard gauge line, 27 was sold to the South Australian Railways in February 1970 as 874 and after being rebuilt with a nose low cab, continues in service with Genesee & Wyoming Australia as 907. The other two were fitted with standard gauge bogies, 28 at Silverton's workshop and 29 at Islington Railway Workshops and were relegated to trip working between the various mines in Broken Hill being repainted in Silverton's yellow and blue livery in May 1984.
In 1990, Silverton Rail purchased two ex Australian National 830 class from AN Tasrail followed in December 1994 by six ex State Rail Authority 48 class locomotives. Initially numbered in the STxx series, all were renumbered as the 48s class. Also purchased for parts were two 830s and three 48s.
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