New South Wales Z27 class locomotive
| New South Wales Z27 class | |
|---|---|
|
Class Z27 Locomotive | |
| Type and origin | |
| Power type | Steam |
| Builder | Hunslet Engine Company |
| Build date | 1913 |
| Total produced | 8 |
| Specifications | |
| Configuration | 2-6-0 |
| UIC classification | 1′Cn |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver diameter | 4 ft 0 1⁄2 in (1.232 m) |
| Length | 54 ft 4 7⁄8 in (16.58 m) |
| Axle load | 12 long tons 15 cwt (28,600 lb or 13 t) |
| Weight on drivers | 36 long tons 8 cwt (81,500 lb or 37 t) |
| Locomotive weight | 45 long tons 2 cwt (101,000 lb or 45.8 t) |
| Locomotive and tender combined weight | 80 long tons 7 cwt (180,000 lb or 81.6 t) |
| Fuel type | Coal |
| Fuel capacity | New: 5 long tons 10 cwt (12,300 lb or 5.6 t) |
| Water capacity | New: 2,150 imperial gallons (9,800 l; 2,580 US gal) |
| Boiler pressure |
New: 160 psi (1.10 MPa), Dec. 1921: 150 psi (1.03 MPa) |
| Firegrate area | 21 sq ft (2.0 m2) |
| Heating surface: – Total | 1,240 sq ft (115 m2) |
| Superheater type | None |
| Cylinders | Two, outside |
| Cylinder size | 18 in × 24 in (457 mm × 610 mm) |
| Valve gear | Walschaerts |
| Valve type | Slide valves |
| Performance figures | |
| Tractive effort |
New: 20,660 lbf (91.9 kN), Dec. 1921: 19,240 lbf (85.6 kN) |
| Factor of adhesion |
New: 3.97, Dec. 1921: 4.24 |
| Career | |
| Operator(s) |
New South Wales Public Works Department New South Wales Government Railways |
| Class | G1204, Z27 from 1924 |
| Number(s) | PWD1-PWD8, 1204–1211, (2701–2708 from 1924) |
| Retired | 1957–1966 |
| Disposition | 1 preserved, 7 scrapped |
The Z27 class (formally G.1204 class) was a class of steam locomotives built by Hunslet Engine Company for the New South Wales Government Railways of Australia.[1][2][3]
History
Eight '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 Humula to Tumbarumba.[2]
When the 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
The first two withdrawals occurred in 1957, a further four followed in 1963.
| Preserved Z27 Class Locomotives | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. | Description | Manufacturer | Year | Organisation | Location | Status | Ref | |
| 2705 | 2-6-0 Mixed Traffic | Hunslet Engine Company | 1913 | New South Wales Rail Transport Museum | Thirlmere | operational | ||
References
- ↑ Preston, Ron G (1984). Tender into Tank. Sydney: New South Wales Rail Transport Museum. pp. 11–57. ISBN 0 909862 18 4.
- ↑ 2.0 2.1 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
- ↑ Locomotive, Steam 2705 Department of Environment & Heritage
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