Victorian Railways K class

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Victorian Railways K class
K103-1922.jpg
VR photo of K 103 as built, 1922
Type and origin
Power typeSteam
BuilderVR Newport Workshops
Build date1922-1946 [1]
Total produced53
Specifications
Configuration:
   Whyte 2-8-0
Gauge 5 ft 3 in (1,600 mm)
Driver dia.55 in (1,397 mm)
Length60 ft 3+12 in (18.38 m)
Axle load 13 long tons 10 cwt (30,200 lb or 13.7 t)
Adhesive weight 53 long tons 2 cwt (118,900 lb or 54 t)
Loco weight62 long tons 7 cwt (139,700 lb or 63.4 t)
Tender weight42 long tons 5 cwt (94,600 lb or 42.9 t)
Total weight104 long tons 12 cwt (234,300 lb or 106.3 t)
Fuel typeCoal
Fuel capacity5 long tons 0 cwt (11,200 lb or 5.1 t)
Water cap.4,200 imp gal (19,000 L; 5,000 US gal)
Firebox:
  Grate area25+34 sq ft (2.39 m2)
Boiler pressure175  psi (12.1  bar; 1,210  kPa)
Heating surface1,680 sq ft (156 m2)
Cylinders 2
Cylinder size 20 in × 26 in (508 mm × 660 mm)
Valve gear Walschaerts
Valve type Piston valves
Performance figures
Tractive effort 28,650  lbf (127,400  N) at 85% boiler pressure
Career
Operators Victorian Railways
Number in class53
Numbers100-109 (later 140-149), 150-192.
Delivered1922 [2]
First run22 August 1922 [2]
Last run13 March 1982 [3]
Retired13 March 1982 [3]
Withdrawn1958-1982 [4] [3]
Preserved151, 153, 154, 157, 159, 160, 162, 163, 165, 167, 169, 174, 175, 176, 177, 181, 183, 184, 190, 191, 192.
Current owner Various heritage groups
Disposition21 preserved, 32 scrapped

The K class was a branch line steam locomotive that ran on Victorian Railways in Australia from 1922 to 1979. Although its design was entirely conventional and its specifications unremarkable, the K class was in practice a remarkably versatile and dependable locomotive. It went on to outlast every other class of steam locomotive in regular service on the VR, and no fewer than 21 examples of the 53 originally built have survived into preservation.

Contents

History

The K class was the first design from the VR Locomotive Design Section under the stewardship of Alfred E Smith as Chief Mechanical Engineer. [5]

The Locomotive Design Section had introduced successful mainline and branchline passenger locomotives with the A2 class and Dd class 4-6-0s, and had recently improved mainline goods services with the C class 2-8-0. They now turned their attention to a requirement for a more powerful branchline goods locomotive, and in 1922 produced a lighter 2-8-0 "Consolidation" locomotive with a 13+12 long tons (13.7 t; 15.1 short tons) axle load and 50 ft (15.24 m) wheelbase, able to run on even the lightest lines on the VR 5 ft 3 in (1,600 mm) system.

Regular service

K109 hauling the inaugural Better Farming Train in Gippsland, October 1924 K109 Better Farming Train.jpg
K109 hauling the inaugural Better Farming Train in Gippsland, October 1924

The K class is credited with working virtually every line in the VR system and hauling almost every kind of train.

A total of ten were built from 1922 to 1923, numbered 100–109. They were put to work on goods services on steeply graded branch lines where their superior tractive effort (45% higher than that of the Dd class) and high factor of adhesion were put to good use. [6]

The design was modified in 1925 into the N class 2-8-2, in response to a new Victorian Railways policy that all new locomotives be capable of conversion from 5 ft 3 in (1,600 mm) to 4 ft 8+12 in (1,435 mm) standard gauge in the event of the Victorian Railways network being standardised. The K, with its firebox mounted between the frames, was unsuitable for standard gauge conversion. [6] The K class proved to be such a successful locomotive that, despite not being gauge convertible, a further 29 units were ordered just before World War II, being delivered between 1940 and 1941. The first of the new engines was 140, quickly renumbered 150 then followed by 151 to 178; the original ten engines were also renumbered 140–149. In 1942 a further order was placed for an additional 21 engines, which would have brought the fleet total to 61 engines. However, only five of this batch - 179 to 183 - entered service during 1943, and construction was halted until after the end of hostilities when work resumed on engines K184 to K192. The remaining engines were never built. [7]

The decision to build more Ks reflected their greater versatility: they had the same tractive effort as the N class but unlike the longer wheelbase N class the K could be turned on the smallest (53-foot or 16.15-metre) turntables.

Although originally designed as a goods locomotive, their maximum permissible speed was raised for branchline passenger service, further increasing their versatility. [8]

The success of the K class was such that even in 1953, with dieselisation already underway on Victorian Railways, the basic design of the K class was updated into the J class 2-8-0, the final class of steam locomotives to be introduced to the Victorian Railways. [6]

Design improvements

During the mid-1930s, the original batch of ten K class locomotives were equipped with VR's 'Modified Front End' for improved drafting and reduced cylinder back pressure. They also saw other improvements, such as the fitting of cross-compound air compressors, smoke deflectors and a new welded tender tank which incorporated a self-trimming coal bunker.

The last seven of the second order of K class locomotives built in 1940-46 were fitted with Boxpok wheels.

Demise

The introduction of the T class (EMD G8) diesel electric locomotive from 1955 onwards on VR's branchline network spelled the beginning of the end for the K class, with Ks gradually being retired as successive orders of Ts were delivered throughout the 1950s and into the 1960s. Even so, their reliable and low-cost operability ensured they remained in service around various yards and depots as shunters and workshop pilots until the Y class (EMD G6B) locomotive eventually superseded them in this role.

On 20 January 1965, locomotive K 188 was used in a public ending of steam on the Victorian Railways, when it was used in the demolition of the North Melbourne Locomotive Depot, pulling down the front wall with a steel rope before a crowd of onlookers. [9] North Ballarat Workshops pilot K 162 had the honour of being the last steam locomotive in service on Victorian Railways, withdrawn in March 1979, and was subsequently allocated to Steamrail Victoria.

Preservation

Preserved K 160 in operation on the Victorian Goldfields Railway, 19 December 2004 K160 at Castlemaine.jpg
Preserved K 160 in operation on the Victorian Goldfields Railway, 19 December 2004

With the rail preservation movement well under way by the late 1960s, many ex-VR locomotives were sold to local councils for display in municipal parks or near railway stations. The K had a further advantage over other classes in this respect: because VR offered the locomotives for the price of their scrap value (plus the cost of freight to their eventual destination), the relatively lightweight K represented a comparatively cheap locomotive purchase. The large number of preserved K class locomotives is in stark contrast to the fate of VR's remaining fleet of 73 larger, heavier N class locomotives, all of which (other than the one example retained for display at the Newport Railway Museum) were scrapped.[ citation needed ]

By the time VR announced the cessation of steam locomotive scrapping in 1978, no fewer than 21 of an original 53 K class locomotives remained in existence, making them in preservation the most numerous class of VR steam locomotives. However, none of the original batch of ten locomotives survives.[ citation needed ]

Note the following list follows traditional practice, with locomotives identified by the at-construction frame number, regardless of numbers worn at any other time or parts swapped.[ citation needed ]

Operational

K 190 (at right) and a D3 class 4-6-0, 10 March 2007. The D3 class was a highly successful rebuild of the original Dd class from 1902, using a boiler design based on that of the K class. D3658k190.jpg
K 190 (at right) and a D3 class 4-6-0, 10 March 2007. The D3 class was a highly successful rebuild of the original Dd class from 1902, using a boiler design based on that of the K class.


K 153 (at right) passes the V/Line VLocity at Pakenham, April 2010 A VLine trains passes a steam locomotive at Pakenham.jpg
K 153 (at right) passes the V/Line VLocity at Pakenham, April 2010


K190 at McKinnon station, November 2016 K190 at McKinnon station Nov 2016.jpg
K190 at McKinnon station, November 2016


K190 on the Rail and Sail at Corio, May 2019 K190 on the Rail and Sail at Corio.jpg
K190 on the Rail and Sail at Corio, May 2019


Steamrail K183 at Camberwell on a top and tail steam shuttle trip to Belgrave, May 2022 K 183 steamrail.jpg
Steamrail K183 at Camberwell on a top and tail steam shuttle trip to Belgrave, May 2022

Under restoration

Static display

K 165 is preserved at the Newport Railway Museum, painted in traditional all-over black. [28]

In addition, K class locomotives are also preserved on public display at various locations: [29]

Stored

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References

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