New South Wales D57 class locomotive

Specifications
Specifications
Configuration:;
• Whyte	4-8-2
Gauge	1435 mm (4 ft 8+1⁄2 in) standard gauge
Driver dia.	5 ft 0 in (1524 mm)
Axle load	23 long tons (25.8 short tons; 23.4 t)
Adhesive weight	201,600 lb (91,400 kg)
Loco weight	310,710 lb (140,936 kg)
Fuel type	Coal
Fuel capacity	14 long tons (15.7 short tons; 14.2 t)
Water cap.	9000 imp gal (11,000 US gal; 41,000 L)
Firebox:
• Grate area	65 sq ft (6.0 m2)
Boiler pressure	200 psi (1379 kPa)
Heating surface	3390 sq ft (315 m2)
Superheater:;
• Heating area	775 sq ft (72.0 m2)
Cylinders	3
Cylinder size	23.25 in × 28 in (591 mm × 711 mm)
Valve gear	Outside (2): Walschaerts. Centre (1): Gresley conjugated

Type and origin
Type and origin
Power type	Steam
Builder	Clyde Engineering, Granville
Build date	1929-1930
Total produced	25

New South Wales D57 class
New South Wales D57 class
	Class D57 locomotive
Power type
Type and origin
Power type	Steam
Builder	Clyde Engineering, Granville
Build date	1929-1930
Total produced	25
Configuration:;
Specifications
Configuration:;
• Whyte	4-8-2
Gauge	1435 mm (4 ft 8+1⁄2 in) standard gauge
Driver dia.	5 ft 0 in (1524 mm)
Axle load	23 long tons (25.8 short tons; 23.4 t)
Adhesive weight	201,600 lb (91,400 kg)
Loco weight	310,710 lb (140,936 kg)
Fuel type	Coal
Fuel capacity	14 long tons (15.7 short tons; 14.2 t)
Water cap.	9000 imp gal (11,000 US gal; 41,000 L)
Firebox:
• Grate area	65 sq ft (6.0 m2)
Boiler pressure	200 psi (1379 kPa)
Heating surface	3390 sq ft (315 m2)
Superheater:;
• Heating area	775 sq ft (72.0 m2)
Cylinders	3
Cylinder size	23.25 in × 28 in (591 mm × 711 mm)
Valve gear	Outside (2): Walschaerts. Centre (1): Gresley conjugated
Maximum speed
Performance figures
Maximum speed	50 mph (80 km/h)
Tractive effort	65,000 lbf (289.1 kN)
Factor of adh.	3.60
Operators
Career
Operators	New South Wales Government Railways
Class	D57
Numbers	5701–5725
Nicknames	Lazy Lizzies
Withdrawn	1957–1961
Disposition	1 preserved, 24 scrapped

The New South Wales D57 class is a class of 4-8-2 steam locomotives built by Clyde Engineering for the New South Wales Government Railways in Australia. The tenders were built by Mort's Dock & Engineering Company.