WAGR D class

Class of Australian 4-6-4T locomotives

Not to be confused with WAGR D class (1884) or WAGR D class (diesel).

WAGR D class

Builder's photograph of a D class

| Type and origin

Power type| Steam
Builder| North British Locomotive Company
Serial number| 19709-19728
Build date| 1912
Total produced| 20
| Specifications

Configuration:
| ​
• Whyte| 4-6-4T
Gauge| 3 ft 6 in (1,067 mm)
Driver dia.| 4 ft 6 in (1,372 mm)
Length| 42 ft 6 in (12.95 m)
Loco weight| As built: 68 long tons 5 cwt (152,900 lb or 69.3 t)
Superheated: 70 long tons 0 cwt (156,800 lb or 71.1 t)
Fuel type| Coal
Fuel capacity| 4 long tons 0 cwt (9,000 lb or 4.1 t)
Water cap.| 1,600 imp gal (7,300 L; 1,900 US gal)
Firebox:| ​
• Grate area| 18.63 sq ft (1.731 m2)
Boiler pressure| As built: 175 lbf/in2 (1.21 MPa)
Superheated: 160 lbf/in2 (1.10 MPa)
Cylinder size| As built: 17 in × 23 in (432 mm × 584 mm)
Superheated: 18 in × 23 in (457 mm × 584 mm)
| Performance figures

Tractive effort| As built: 17,233 lbf (76.66 kN)
Superheated: 18,768 lbf (83.48 kN)
Factor of adh.| As built: 4.7
Superheated: 4.6
| Career

Operators| Western Australian Government Railways
Numbers| D368-D387
Disposition| all scrapped

The WAGR D class was a class of 4-6-4T tank locomotive operated by the Western Australian Government Railways (WAGR) between 1912 and 1964.

## History

[edit]

In 1911 the WAGR placed an order with the North British Locomotive Company for twenty 4-6-4T locomotives to haul suburban passenger services in Perth. All entered service between June and September 1912. Commencing in 1932, all bar D386 were rebuilt as the Ds class with superheated boilers. In 1935, D377 was fitted with larger side tanks increasing its water capacity by 210 gallons, these were removed in May 1959. With the arrival of the ADH class diesel multiple units in 1953, withdrawals commenced with the last withdrawn in November 1965.[1][2][3]

The D class was also the basis for the later Dm and Dd classes of tank engine, which continued this role until the end of steam.[1]

## Class list

[edit]

The numbers and periods in service of each member of the D class were as follows:[4]

| Builder's
number  | Road
number  | In service  | Superheated  | Withdrawn  | Notes

|
|
|
|
|

19709  | 368  | 6 July 1912 | 1 April 1933 | 5 March 1964 |
19710  | 369  | 13 July 1912 | 3 July 1935 | 7 October 1963 |
19711  | 370  | 6 July 1912 | 21 December 1933 | 14 February 1952 |
19712  | 371  | 6 July 1912 | 15 May 1933 | 18 November 1965 | Stowed 31 July 1964
19713  | 372  | 6 July 1912 | 23 September 1947 | 22 July 1963 |
19714  | 373  | 29 June 1912 | 15 November 1939 | 5 March 1964 |
19715  | 374  | 29 June 1912 | 30 May 1934 | 23 April 1963 |
19716  | 375  | 13 July 1912 | 9 April 1932 | 19 October 1964 | Stowed 1 April 1964
19717  | 376  | 29 June 1912 | 27 April 1934 | 12 November 1963 | Stowed 2 September 1963
19718  | 377  | 20 July 1912 | 5 September 1935 | 15 May 1962 | Tanks extended 5 September 1935 to May 1959
19719  | 378  | 13 July 1912 | 21 April 1944 | 12 December 1963 |
19720  | 379  | 21 September 1912 | 6 November 1933 | 31 October 1961 |
19721  | 380  | 14 September 1912 | 25 July 1947 | 17 March 1954 |
19722  | 381  | 28 September 1912 | 19 March 1932 | 16 March 1964 |
19723  | 382  | 21 September 1912 | 27 September 1935 | 1 March 1962 |
19724  | 383  | 21 September 1912 | 18 April 1931 | 16 September 1953 |
19725  | 384  | 28 September 1912 | 29 March 1934 | 16 August 1962 |
19726  | 385  | 28 September 1912 | 16 May 1932 | 16 August 1954 |
19727  | 386  | 21 September 1912 |  | 15 May 1950 | Not superheated
19728  | 387  | 14 September 1912 | 14 December 1946 | 19 June 1953 |

## Namesakes

[edit]

The D class designation was previously used for the D class locomotive that was withdrawn in 1903. It was reused in the 1970s when the D class diesel locomotives entered service.

## See also

[edit]

* Trains portal
* Western Australia portal

* Rail transport in Western Australia
* List of Western Australian locomotive classes

## References

[edit]

### Notes

[edit]

1. ^ a b Gunzburg 1984, pp. 93–94.
2. ^ Turner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. p. 58\. ISBN 086417778X.
3. ^ Oberg, Leon (2010). Locomotives of Australia 1850s-2010. Dural: Rosenberg Publishing. pp. 153–154\. ISBN 9781921719011.
4. ^ Gunzburg 1984, p. 94.

### Cited works

[edit]

* Gunzburg, Adrian (1984). A History of WAGR Steam Locomotives. Perth: Australian Railway Historical Society (Western Australian Division). ISBN 0959969039.

## External links

[edit]

Media related to WAGR D class at Wikimedia Commons

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Classes of locomotives of the Western Australian Government Railways (WAGR) and Westrail

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* List of Western Australian locomotive classes
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