New South Wales D50 class locomotive
| New South Wales D50 class | |
|---|---|
Class D50 Locomotive
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| Type and origin | |
| Power type | Steam |
| Builder | Beyer, Peacock & Co. (151) Dübs & Co. (5) Neilson & Co. (10) North British Locomotive Co. (84) Clyde (30) |
| Build date | 1896–1916 |
| Total produced | 280 |
| Specifications | |
| Configuration | 2-8-0 |
| UIC classification | 1'Dn |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver diameter | 4 ft 3 in (1.295 m) |
| Weight on drivers | 126,000 lb (57 t) |
| Locomotive weight | 139,000 lb (63 t) |
| Boiler pressure | 160 psi (1.10 MPa) |
| Firegrate area | 30 sq ft (2.8 m2) |
| Heating surface: – Total |
2,210 sq ft (205 m2) |
| Superheater type | None |
| Cylinders | Two, outside |
| Cylinder size | 21 in × 26 in (533 mm × 660 mm) |
| Performance figures | |
| Tractive effort | 30,576 lbf (136.0 kN) |
| Factor of adhesion |
4.10 |
| Career | |
| Operator(s) | New South Wales Government Railways |
| Class | T524, D50 from 1924 |
| Number in class | 280 |
| Disposition | 4 preserved, 276 scrapped |
The D50 class was a class of 2-8-0 steam locomotives built for the New South Wales Government Railways of Australia.
History[edit]
The first was delivered in May 1896 by Beyer, Peacock and Company with further orders over the next 20 years seeing the class number 280. Their second and third coupled wheel tyres were flangeless to reduce curve friction.[1][2]
During the First World War, an additional 10 locomotives of this class were under construction at the North British Locomotive Company, but these were not delivered to Australia, being taken over by the British War Office for the Royal Engineers Railway Operating Division. After the war, they were offered back to the New South Wales Government Railways at higher than new prices and in a badly worn condition. They were declined and were subsequently acquired by a Belgian railway and, following rebuilding, assigned to work coal trains along the Meuse Valley. The Commonwealth Railways also chose this design to be their first goods locomotive class, building eight K-class, for the Trans-Australian Railway.[2]
The last 75 were built with superheaters and after being judged a success many of the class were retrofitted. Many of the class received turret type tenders in later years which provided better visibility when operating in reverse.[2]
In the 1930s 72 were withdrawn and after being used during the load testing of the Sydney Harbour Bridge in 1932 with most of these locomotives being latter scrapped, although 14 were rebuilt with superheaters and returned to service.[1] By mid-1964 there were only 113 left in service with the class by now normally restricted to working coal trains in the Hunter Valley and shunting duties in the larger marshalling yards throughout the system.[1][2]
Preservation[edit]
| Preserved D50 Class Locomotives | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. | Description | Manufacturer | Year | Current Organisation | Location | Status | Ref | |
| 5069 | 2-8-0goods | Beyer, Peacock and Company | 1903 | Dorrigo Steam Railway and Museum | Dorrigo | stored | ||
| 5096 | 2-8-0 goods | Clyde Engineering | 1907 | New South Wales Rail Transport Museum | Broadmeadow Locomotive Depot | stored | NSW Locomotive, Steam 5096 | |
| 5112 | 2-8-0 goods | Clyde Engineering | 1908 | Bathurst Regional Council | Bathurst Station | static display | ||
| 5132 | 2-8-0 goods | Clyde Engineering | 1909 | Dorrigo Steam Railway and Museum | Dorrigo | stored | ||
Gallery[edit]
-
5096 stored at Broadmeadow No.2 Roundhouse
See also[edit]
References[edit]
- ^ a b c Oberg, Leon (1984). Locomotives of Australia 1850's - 1980's. Frenchs Forest: Reed Books. pp. 76–77. ISBN 0 730100 05 7.
- ^ a b c d Grunbach, Alex (1989). A Compendium of New South Wales Steam Locomotives. Sydney: Australian Railway Historical Society, NSW Division. pp. 129–135. ISBN 0 909650 27 6.
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