New South Wales Z27 class
Class Z27 Locomotive
UIC class 1′Cn
4 ft ( 8 in 1⁄ 2 1,435 mm)
Driver dia. 4 ft
0 in (1.232 m) 1⁄ 2
4 in (16.58 m) 7⁄ 8
Axle load 12 long tons 15 cwt (28,600 lb or 13 t)
Adhesive weight 36 long tons 8 cwt (81,500 lb or 37 t)
45 long tons 2 cwt (101,000 lb or 45.8 t)
80 long tons 7 cwt (180,000 lb or 81.6 t)
New: 5 long tons 10 cwt (12,300 lb or 5.6 t)
New: 2,150 imperial gallons (9,800 l; 2,580 US gal)
• Firegrate area 21 sq ft (2.0 m
New: 160 psi (1.10 MPa),
Dec. 1921: 150 psi (1.03 MPa)
1,240 sq ft (115 m
Cylinders Two, outside
Cylinder size 18 in × 24 in (457 mm × 610 mm)
New South Wales Public Works Department
New South Wales Government Railways
Class G1204, Z27 from 1924
PWD1-PWD8, 1204–1211, (2701–2708 from 1924)
1 preserved, 7 scrapped
Z27 class (formerly G.1204 class) was a class of steam locomotives built by Hunslet Engine Company for the New South Wales Government Railways of Australia.   
History [ edit ]
Mogul' type locomotives were built in 1913 for the New South Wales Public Works Department as railway construction locomotives, working on lines such as Coffs Harbour to Glenreagh, Glenreagh to Dorrigo and the Tumbarumba railway line between Humula and Tumbarumba. 
New South Wales Government Railways assumed responsibility for railway construction in 1917, these locomotives were transferred and became the (G)1204 class. These locomotives were considered too modern to be utilised on construction work and were transferred to more demanding duties. However they were found to be unsuitable for working lines which abounded in curves, having a tendency to shed their valve motion on anything other than the straightest of track. They were transferred to Narrabri West where they stayed for practically the whole of their remaining lives, working to Moree, Pokataroo, Walgett, Mungindi and Boggabilla.
Preservation [ edit ]
The first two withdrawals occurred in 1957, a further four followed in 1963.
References [ edit ]
^ Preston, Ron G (1984). Tender into Tank. Sydney: New South Wales Rail Transport Museum. pp. 11–57. ISBN 0 909862 18 4.
^ Grunbach, Alex (1989). A Compendium of New South Wales Steam Locomotives. Sydney: Australian Railway Historical Society, NSW Division. pp. 41–45. ISBN 0 909650 27 6.
^ New South Wales Railways 1855-1955. Published by Department of Railways
^ Grunbach, Alex (1989). A Compendium of New South Wales Steam Locomotives. Sydney: Australian Railway Historical Society, NSW Division. pp. 165–166. ISBN 0 909650 27 6.
^ Locomotive, Steam 2705 Department of Environment & Heritage