WAGR Dd class

WAGR Dd class

Dd592 passes through Jandakot with an ARHS excursion train, 1986
Type and origin
Power type Steam
Builder Midland Railway Workshops
Build date 1946
Total produced 10
Specifications
Configuration 4-6-4T
Gauge 3 ft 6 in (1,067 mm)
Driver dia. 4 ft 6 in (1,372 mm)
Length 43 ft 3 in (13.18 m)
Loco weight 72 long tons 0 cwt (161,300 lb or 73.2 t)
Fuel type Coal
Water cap 1,820 imp gal (8,300 l; 2,190 US gal)
Firebox:
 • Firegrate area		 18.6 sq ft (1.73 m2)
Boiler pressure 160 lbf/in2 (1.10 MPa)
Cylinder size 18 in × 23 in (457 mm × 584 mm)
Valve gear Walschaerts
Performance figures
Tractive effort 18,768 lbf (83.48 kN)
Factor of adh. 4.7
Career
Operators Western Australian Government Railways
Numbers Dd591-Dd600
Nicknames Donald Ducks
Preserved Dd592, Dd596
Disposition 2 preserved, 8 scrapped

The WAGR Dd class was a class of 4-6-4T tank locomotive operated by the Western Australian Government Railways (WAGR) between 1946 and 1972.

History

The Dd type was an evolution of the Dm class. However unlike the Dm class which used components of the old E Class tender engines, the Dd class components were all new.[1] All were built at the Midland Railway Workshops entering service between April and November 1946. They were built to haul suburban passenger services in Perth, although they did on occasions work to Bunbury on the South Western and Merredin on the Eastern lines.[2][3][4] The first were withdrawn in 1969, with the remainder in 1970/71 following the entry into service of the ADK/ADB class diesel multiple units.[2][3]

Preservation

Two have been preserved:

Class list

The numbers and periods in service of each member of the Dd class were as follows:[9]

Road
number		 In service Withdrawn Notes
591 12 April 1946 10 February 1969
592 17 May 1946 14 August 1972 Preserved at Western Australian Rail Transport Museum
593 14 June 1946 10 September 1970
594 28 June 1946 10 February 1969
595 19 July 1946 17 June 1971
596 9 August 1946 17 June 1971 Preserved at Gosnells Railway Market
597 31 August 1946 17 June 1971
598 20 September 1946 10 February 1969
599 11 October 1946 10 February 1969
600 1 November 1946 10 September 1970

See also

References

Notes

  1. ↑ Gunzburg 1984, p. 125.
  2. 1 2 Turner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. p. 141. ISBN 086417778X.
  3. 1 2 Oberg, Leon (2010). Locomotives of Australia 1850s-2010. Dural: Rosenberg Publishing. pp. 230–231. ISBN 9781921719011.
  4. ↑ Clark, Peter (2012). The Australian Locomotive Guide. Dural: Rosenberg Publishing. p. 46. ISBN 9781922013682.
  5. 1 2 Whiteford, David; De Bruin, Charles; Watson, Lindsay; Watson, Neville (1983). Western Australian Preserved Locomotives. Elizabeth: Railmac Publications. p. 7. ISBN 0 949817 19 8.
  6. 1 2 D and Dm Class Tank Locomotive Rail Heritage WA
  7. ↑ Dd592 Australian Steam
  8. ↑ Dd596 Australian Steam
  9. ↑ Gunzburg 1984, p. 126.

Bibliography

  • Gunzburg, Adrian (1968). WAGR Locomotives 1940–1968. Perth: Australian Railway Historical Society (Western Australian Division). pp. 13–15, 47. OCLC 219836193. 
  • Gunzburg, Adrian (1984). A History of WAGR Steam Locomotives. Perth: Australian Railway Historical Society (Western Australian Division). ISBN 0959969039. 

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