Not to be confused with WAGR S class (1888) or Westrail S class.
WAGR S class
Preserved S549 Greenmount at Harvey following restoration to working condition
Type and origin
Power type
Steam
Designer
Frederick Mills
Builder
Midland Railway Workshops
Build date
1943-1947
Total produced
10
Specifications
Configuration:
• Whyte
4-8-2
Gauge
1,067 mm (3 ft 6 in)
Total weight
119 long tons 6 cwt (267,200 lb or 121.2 t)
Fuel type
Coal
Fuel capacity
7 long tons 0 cwt (15,700 lb or 7.1 t)/ 9 long tons 0 cwt (20,200 lb or 9.1 t)
Water cap.
5,000 and 3,500 imp gal (23,000 and 16,000 L; 6,000 and 4,200 US gal)
Firebox:
• Grate area
40 sq ft (3.7 m2)
Boiler pressure
200 lbf/in2 (1,379 kPa)
Cylinder size
19 in × 24 in (483 mm × 610 mm)
Loco brake
Steam (locomotive) Vacuum (tender)
Performance figures
Tractive effort
30,685 lbf (136.49 kN)
Career
Operators
Western Australian Government Railways
Numbers
S541-S550
Retired
1971-1972
Preserved
S542, S547, S549
Disposition
3 preserved, 7 scrapped
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