NZR WD class

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NZR WD class
"Wd" class steam locomotive no. 321 (2-6-4T type). ATLIB 292528.png
WD no. 321 steam locomotive (2-6-4T type). Godber Collection, Alexander Turnbull Library. [1]
Type and origin
Power typeSteam
Builder Baldwin Locomotive Works, Philadelphia, United States
Serial number18543 – 18554
19259 – 19264
Build date1901
Total produced18
Specifications
Configuration:
   Whyte 2-6-4 T
Gauge 3 ft 6 in (1,067 mm)
Driver dia.39.75 in (1.010 m)
Wheelbase 27 ft 7 in (8.41 m)
Length34 ft 9 in (10.59 m)
Adhesive weight 29.2 long tons (29.7  t; 32.7 short tons)
Loco weight43.7 long tons (44.4  t; 48.9 short tons)
Fuel type Coal
Fuel capacity2.7 long tons (2.7  t; 3.0 short tons)
Water cap.900 imp gal (4,100 L; 1,100 US gal)
Firebox:
  Firegrate area
17.7 square feet (1.64 m2)
Boiler pressure200  psi (1,379  kPa)
Heating surface837 square feet (77.8 m2)
Cylinders Two
Cylinder size 14  in × 20 in (356  mm × 508 mm)
Performance figures
Tractive effort 15,780  lbf (70.2  kN)
Career
Number in class18
Numbers316 – 327
355 – 360
LocaleAll of New Zealand
First run24 May 1901
Last runMarch 1936 (for NZR)
1960 (for private companies)
Retired1933 – 1960
PreservedTwo (WD's 356 & 357)
Current ownerBaldwin Steam Trust, Canterbury Railway Society (1)
Disposition16 scrapped
2 preserved

The NZR WD class was a class of tank locomotive built by Baldwin Locomotive Works to operate on New Zealand's national rail network.

Contents

Essentially a more advanced version of 1898's WB class, the eighteen members of the WD class were ordered in 1901 and most entered service that year, though three were not introduced until the start of 1902. [2] Based in locations all around the country, from Auckland in the north to Dunedin in the south, the WD class were suitable for a variety of trains from freight to suburban passenger services. Withdrawal of the class began with WD 356 in January 1933, with the final three, 327, 359, and 360, written off in March 1936. A number were not actually scrapped or dumped but were sold to work on private industrial lines.

Industrial use

Although designed as a large suburban tank locomotive, four WD class locomotives were sold for industrial use after withdrawal by NZR. WD 316 and WD 356 were sold in April 1934 and January 1933 to Wilton Collieries Ltd. for use on their private line between Ngauruwahia and Glen Massey; both were listed as unserviceable by 1935 and were sold for scrap. WD 317 was sold in December 1934 to the Ohai Railway Board for use on their private railway between Ohai and Wairio. This locomotive remained in working order up until 1944, when it was placed in storage and scrapped in 1952.

WD 357 was withdrawn in March 1935 and placed in storage before it was sold to the Timaru Harbour Board in 1938. It remained in use at Timaru until 1964, [3] when it was donated to the New Zealand Railway and Locomotive Society's Canterbury Branch for preservation on the Ferrymead Railway. [2]

Preservation

WD 357, preserved at Ferrymead Railway, is still fitted with its original boiler and is currently in storage pending overhaul to working order.

During the 1990s, the remains of WD 356 were discovered at Konini, near Pahiatua. It had been dumped for erosion protection during World War II; the frames of the locomotive had been separated into three sections, comprising the front, centre and trailing sections and buried along the riverbank. The front and centre sections were salvaged by Hugh McCracken and moved to Steam Incorporated's depot at Paekakariki. The remains of the locomotive were moved to the Rimutaka Incline Railway Heritage Trust's workshops at Maymorn in 2006, pending restoration. [4]

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NZR A class (1873)

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NZR O class

The NZR O class consisted of six steam locomotives that operated on New Zealand's national rail network. Ordered from the Baldwin Locomotive Works of Pennsylvania in 1885, three arrived in time to begin work in December 1885, while two more were placed in service in January 1886 and the sixth in February 1886. After almost four decades of service, all six were withdrawn in May 1922. None survived to be preserved, although two engine frames and 5 tenders from O class locomotives are known to exist near Summit on the former Rimutaka Incline.

New Zealand DJ class locomotive

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NZR N<sup>C</sup> class

The NZR NC class was a class of two steam locomotives built by Baldwin Locomotive Works built for service on New Zealand's private Wellington and Manawatu Railway (WMR). They did not acquire their NC classification until the publicly owned New Zealand Railways Department (NZR) purchased the WMR and its locomotive fleet.

NZR O<sup>C</sup> class

The OC class, built by the Baldwin Locomotive Works for the Wellington and Manawatu Railway (WMR) in New Zealand, consists of a solitary steam locomotive. Ordered in 1896 as an externally similar but more powerful version of the OA class locomotive ordered in 1894, it entered service in June 1897 as No. 16. It was a Vauclain compound locomotive.

NZR P class (1885)

The P class was a class of steam locomotives built to haul freight trains on the national rail network of New Zealand. The class consisted of ten individual locomotives ordered from the British company of Nasmyth, Wilson and Company in 1885, but miscommunications about the weight limitations imposed on the locomotives meant they did not start work until 1887. This debacle came at a time when the New Zealand Railways Department (NZR) was suffering from a lack of motive power to work on its rapidly expanding network and was part of what prompted a shift towards American and home-grown manufacturers.

NZR E class (1906)

The New Zealand E class locomotive comprised a single Mallet steam locomotive operated by New Zealand Railways (NZR) from 1906 until 1917. Classified as E 66 and nicknamed Pearson's Dream after its designer, it was an experimental Mallet locomotive designed to work on the Rimutaka Incline. The "E" classification was previously used by the Double Fairlie E class of 1872-75, but the classification was free as they had all been withdrawn by the time E 66 entered service. After the withdrawal of E 66, "E" was again re-used on the battery-electric E class of 1922. It was the only Mallet locomotive to operate for the NZR

NZR X class

The New Zealand X class was a pioneering class of eighteen 4-8-2 steam locomotives built for New Zealand Railways Department (NZR) and designed by A. L. Beattie that operated on the national rail network of New Zealand. In 1908, a heavy and powerful locomotive was required to haul traffic on the newly completed mountainous central section of the North Island Main Trunk Railway, and as a logical progression of the 4-6-2 Q class design, the 4-8-2 wheel arrangement was created for the X class.

NZR C class (1930)

The NZR C class consisted of twenty-four steam locomotives built to perform shunting duties on New Zealand's national rail network. It is sometimes known as the big C class to differentiate it from the C class of 1873.

NZR W<sup>AB</sup> class

The NZR WAB class locomotives were steam locomotives designed, built and used by New Zealand Railways Department (NZR). Their wheel arrangement is described by the Whyte notation 4-6-4T. The locomotives were designed by NZR chief draughtsman S.H. Jenkinson as tank versions of the AB class 4-6-2 Pacific locomotive. Initially, the locomotives were separated into two classes, designated WAB for mainline work and WS for suburban work.

New Zealand EW class locomotive

The New Zealand EW class locomotive was a type of electric locomotive used in Wellington, New Zealand. The classification "EW" was due to their being electric locomotives allocated to Wellington. For two decades until the advent of the DX class they were the most powerful locomotives in New Zealand.

NZR H class

The NZR H class steam locomotive was a unique class of Fell locomotive used by the New Zealand Railways Department (NZR) on the Rimutaka Incline, the 3-mile (4.8 km) section of 1 in 15 gradient between Cross Creek and Summit, over the Rimutaka Ranges.

NZR L<sup>A</sup> class

The NZR LA class was a class of 4-4-0T steam locomotives used by the New Zealand Railways Department and the New Zealand Midland Railway Company. They were built by Nasmyth, Wilson and Company in 1887 for New Zealand Midland Railway Company, and were taken over by NZR in 1900, when the government acquired the incomplete Midland line. The designation also applies to the NZR 4-4-0Trebuilds of the Avonside L class of 1875 which were later reclassified LB after being rebuilt as 4-4-2Ts.

New Zealand DE class locomotive

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.

NZR K<sup>B</sup> class

The NZR KB class of 1939 was a class of six mixed traffic steam locomotives built for New Zealand Railways Department (NZR), that operated on New Zealand's railway network. After the success of the K class, the KB class were built to meet the increasing traffic demands on the Midland Line in the South Island. The locomotives had a wheel arrangement of 4-8-4 and first appeared with distinctive streamlining, mainly to hide their ACFI feedwater systems.

NZR W class

The NZR W class consisted of two steam locomotives built at the Addington Railway Workshops in Christchurch, New Zealand by the New Zealand Railways Department (NZR). They were the first locomotives to be built by NZR.

References

  1. ""Wd" class steam locomotive no. 321 (2-6-4T type)". National Library of New Zealand . Retrieved 23 March 2019.
  2. 1 2 Cavalcade125 1988, p. 7.
  3. Palmer & Stewart 1965, p. 74.
  4. "Rail Vehicles". Rimutaka Incline Railway Heritage Trust.

Bibliography