New Zealand DE class locomotive

New Zealand DE class

DE 504 in service for Taieri Gorge Railway, shunting at Dunedin.
Type and origin
Power type Diesel-electric
Builder English Electric, Preston, United Kingdom
Build date 1951–1952
Specifications
Configuration:
  UIC Bo-Bo
Gauge 3 ft 6 in (1,067 mm)
Length 11.6 metres (38 ft 1 in)
Loco weight 52.0 tonnes (51.2 long tons; 57.3 short tons)
Fuel type Diesel
Prime mover English Electric 6SRKT Mk 1
Performance figures
Maximum speed 97 km/h (60 mph)
Power output 490 kW (660 hp)
Tractive effort 54 kN (12,000 lbf)
Career
Number in class 15
Numbers 501–515 (original)
1308–1458 (TMS)
First run 20 May 1952
Last run January 1989
Retired April 1984 – January 1989
Disposition 8 scrapped
7 preserved

The New Zealand DE class locomotive is a New Zealand class of shunting diesel-electric locomotives. The New Zealand Railways intended to replace steam locomotives for shunting duties with this class. They are physically similar to the Tasmanian Government Railways X class, which were also of English Electric design.

Introduction

Although NZR intended to use the class as a heavy transfer shunter, four of the DEs were used in pairs (each locomotive crewed) on the 1953—1954 Royal Train tour when Queen Elizabeth II visited New Zealand. This was to give a sense of modernity to the public and to show what the class could be capable of. The DEs was trialed for use on suburban passenger trains in Auckland and Wellington as well as on lesser regional passenger services and branchline freight. The class was also the first to use the new Murupara Branch; for construction then for log trains on the still unsettled track bed.[1] This has given the DE class an unofficial status of the first mainline diesel electric locomotive in NZR service, a title correctly applied to another English Electric class, the DF class of 1954.

The class was initially based in the North Island, but four of the class were sent to the South Island in 1981. The class was slowly dispersed to secondary yards on the New Zealand network, such as Napier, Dunedin and Invercargill. In the early 1980s, two DE class members received English Electric 6SRKT Mk 2 engines (which were fitted to the DG class locomotives).[2]

Withdrawal and Preservation

As part of the New Zealand Railways Corporation plan to reduce the number of first-generation diesels in the late 1980s, a number of the class were scrapped or sold for preservation.

Seven DE class locomotives have survived out of the original fifteen. All have operated in preservation at least once time:

Class register

Key: In service On lease Out of service Preserved Overhaul/Repair Scrapped
Original number TMS number Introduced Withdrawn Status Notes
501 1308 May 1952 February 1987 Scrapped Original TMS number was 1936.
502 1314 June 1952 October 1986 Scrapped
503 1320 August 1952 February 1988 Scrapped
504 1337 August 1952 February 1988 Preserved Preserved, Dunedin Railways.
505 1343 September 1952 April 1984 Preserved Preserved, Silver Stream Railway.
506 1366 December 1952 February 1988 Scrapped
507 1372 September 1952 February 1988 Preserved Original TMS number was 1994. Preserved, Glenbrook Vintage Railway.
508 1389 March 1954 January 1989 Preserved Preserved, Silver Stream Railway.
509 1395 March 1953 February 1988 Preserved Preserved, Glenbrook Vintage Railway.
510 1406 March 1953 November 1987 Scrapped
511 1412 August 1952 November 1987 Preserved Fitted with an English Electric 6SRKT Mk 2 diesel engine. Preserved, Diesel Traction Group.
512 1429 November 1952 November 1987 Preserved Fitted with an English Electric 6SRKT Mk 2 diesel engine. Preserved, Diesel Traction Group. On loan to the Weka Pass Railway.
513 1435 August 1952 February 1987 Scrapped
514 1441 June 1953 April 1984 Scrapped
515 1458 August 1953 December 1988 Scrapped

References

  1. Churchman, Geoffrey B., and Hurst, Tony; The Railways of New Zealand: A Journey Through History p114 (1990, HarperCollins, Auckland) ISBN 1-86950-015-6
  2. "DE class of 1952". English Electric Railway Traction in New Zealand. Retrieved 15 February 2017.
  3. "FRONZ Journal #156 - July 2015" (PDF). FRONZ. July 2015. Retrieved 19 January 2017.
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