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NZR U Class
The NZR U class, the first tender locomotives built in New Zealand, were a class of 4-6-0 Ten Wheeler locomotive designed to the requirements of Mr T. F. Rotherham and built at NZR Addington between 1894 and 1903. They were amongst NZRs' longest lived tender engines. Origin and Design The U class was designed to fill a need to provide more powerful and faster passenger locomotives than the N and V classes then in service. The class were the first express locomotives on the NZR to have Walschaerts valve motion and also introduced the 4' 6" driving wheel which would be considered standard for express passenger work. They did however have flat slide valves and would be the last NZR locomotives so built. The U's were the first tender locomotives built in New Zealand and were a significant step in the country's industrial capability. However, Addington was not yet set up for mass production and construction was intermittent and drawn out, resulting in changes to the design over the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand Railways Department
The New Zealand Railways Department, NZR or NZGR (New Zealand Government Railways) and often known as the "Railways", was a government department charged with owning and maintaining New Zealand's railway infrastructure and operating the railway system. The Department was created in 1880 and was corporatised on 1 April 1982 into the New Zealand Railways Corporation. Originally, railway construction and operation took place under the auspices of the former provincial governments and some private railways, before all of the provincial operations came under the central Public Works Department. The role of operating the rail network was subsequently separated from that of the network's construction. From 1895 to 1993 there was a responsible Minister, the Minister of Railways. He was often also the Minister of Public Works. Apart from four brief experiments with independent boards, NZR remained under direct ministerial control for most of its history. History Originally, New Zea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR UA Class
The NZR UA class were a class of 4-6-0 Ten Wheeler locomotive built by the Scottish firm of Sharp Stewart and Company to ease a motive power shortage. They lived relatively short lives amongst NZR ten wheelers, mostly at the southern end of the country where they were seldom photographed. Origin and design As New Zealand rapidly recovered from the 1880s depression, NZR developed a motive power shortage that its own workshops could not keep up with. After his 1898 annual report indicated it was "absolutely necessary" to obtain more locomotives the Locomotive Superintendent obtained permission to buy sixteen 4-6-0 locomotives, ten from Baldwin, and six from Sharp Stewart and Co. All were delivered in 1899. Unlike the Addington U class the new locomotives were of uniform appearance, with low mounted running boards and splashers over the drivers. The design was based on and very similar to the U class, differing primarily in the provision of smaller driving wheels delivering high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Locomotives Of New Zealand
Steam is a substance containing water in the gas phase, and sometimes also an aerosol of liquid water droplets, or air. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization. Steam that is saturated or superheated is invisible; however, "steam" often refers to wet steam, the visible mist or aerosol of water droplets formed as water vapor condenses. Water increases in volume by 1,700 times at standard temperature and pressure; this change in volume can be converted into mechanical work by steam engines such as reciprocating piston type engines and steam turbines, which are a sub-group of steam engines. Piston type steam engines played a central role in the Industrial Revolution and modern steam turbines are used to generate more than 80% of the world's electricity. If liquid water comes in contact with a very hot surface or depressurizes quickly below its vapor pressure, it can create a steam explosion. Types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand Railway And Locomotive Society
The New Zealand Railway and Locomotive Society Inc is a society of railway enthusiasts, based in Wellington. It was incorporated in 1958. The society archives are in the ''Thomas McGavin Building'' on Ava railway station's former goods yard in the Hutt Valley. At one time an old railway carriage held at the Ngaio railway station was used. Publications The society publishes a magazine, the ''New Zealand Railway Observer'' (), that was first published by the New Zealand Railway Correspondence Society on a Gestetner The Gestetner is a type of duplicating machine named after its inventor, David Gestetner (18541939). During the 20th century, the term ''Gestetner'' was used as a verb—as in ''Gestetnering''. The Gestetner company established its base in London ... in 1944, and a newsletter ''Turntable''. The society publishes books on railway subjects. There are currently about 25 books available, as listed on the website. Most are about New Zealand railways, but there is a book ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locomotives Of New Zealand
Locomotives of New Zealand is a complete list of all locomotive classes that operate or have operated in Rail transport in New Zealand, New Zealand's railway network. It does not include locomotives used on List of New Zealand railway lines#Bush tramways, bush tramways. All New Zealand's main-line locomotives run on a narrow gauge of 3 ft 6 in gauge railways, 3 ft 6 in (1,067 mm). Early locomotives The first locomotive in New Zealand was built by Avonside Engine Company#Slaughter, Grüning and Company, Slaughter & Co in St Philip's Marsh, Bristol, arrived at Ferrymead Railway, Ferrymead in May 1863 to work on Canterbury Provincial Railways#Motive Power, Canterbury Provincial Railways' 5 ft 3 in gauge railways, 5 ft 3 in gauge. It was withdrawn in 1876. The Ferrymead to Christchurch railway line was not completed until 1 December 1863, so the steam locomotive ''Lady Barkly'', in use on Invercargill's jetty in August 1863 during construction of the Bluff Branch#Construction, Blu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR UD Class
The NZR U class was a class of two 4-6-0 steam locomotives built by the Baldwin Locomotive Works in 1904 for the Wellington and Manawatu Railway Company. When that company was nationalised in 1908, they passed into the ownership of the New Zealand Railways and received the designation U. Introduction The two locomotives were the final new motive power ordered by the independent Wellington and Manawatu Railway Company. Specification Weighing with a tender of , they could haul express trains easily at on track that was flat or only a light grade. The coupled driving wheels were large for the period, and were the largest to run in New Zealand. Their working steam pressure was , and they had diameter In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid fo ... cylinders with pisto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR UC Class
The NZR UC class were a group of ten 4-6-0 steam locomotives obtained from Scottish builders Sharp, Stewart and Company for New Zealand Railways (NZR). Essentially they were developments of the firm's previous batch of 4-6-0s' for NZR. Origin and design Due to an increase in traffic around the turn of the century, NZR obtained 47 4-6-0 locomotives to provide additional capacity. All were used in the South Island. The UC class were the last new 4-6-0's to be delivered, entering service between August and October 1901. They were briefly classified "U". Externally they were similar in appearance to Sharp Stewart's earlier UA class, but with a longer cylinder stroke and considerably higher boiler pressure (200 psi as opposed to 175 psi) they had a significantly higher tractive effort. All of the locomotives began service in the Christchurch area aside from two allocated to the Dunedin - Invercargill section. Service With the opening of the Otira Tunnel in 1923 all ten were gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR UB Class
New Zealand Railways may refer to KiwiRail which is the current rail services owner/operator and infrastructure owner/maintainer. New Zealand Railways may also refer to the following companies: * New Zealand Railways Department (also known as New Zealand Government Railways) – New Zealand national rail owner/operator until 1982 * New Zealand Railways Corporation – New Zealand national rail owner/operator (1982–1990), railway landowner (1990–2003), rail network owner trading as ONTRACK (2003–2008), railway landowner (2008–present) * New Zealand Rail Limited – national rail owner/operator (1990–1995; privatised 1993) * Tranz Rail – national rail owner/operator (1995–2003) * Toll Rail, a division of Toll NZ – rail services operator (2003–2008) * KiwiRail – national rail owner/operator (2008–present) See also * Rail transport in New Zealand Rail transport in New Zealand is an integral part of New Zealand's transport network, with a nationwide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superheater
A superheater is a device used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, steam engines, and in processes such as steam reforming. There are three types of superheaters: radiant, convection, and separately fired. A superheater can vary in size from a few tens of feet to several hundred feet (a few metres to some hundred metres). Types * A radiant superheater is placed directly in radiant zone of the combustion chamber near the water wall so as to absorb heat by radiation. * A convection superheater is located in the convective zone of the furnace usually ahead of economizer (in the path of the hot flue gases). These are also called primary superheaters. * A separately fired superheater is a superheater that is placed outside the main boiler, which has its own separate combustion system. This superheater design incorporates additional burners in the area of superheater pipes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Addington Workshops
The Addington Railway Workshops was a major railway workshops established in the Christchurch suburb of Addington in 1877 by the Public Works Department, and transferred in 1880 to the newly-formed New Zealand Railways Department (NZR). The workshops closed in 1990. History Addington Railway Workshops were opened in 1877 to overhaul and construct railway equipment, and to assemble locomotives being imported from England. In 1889, the workshops were responsible for building the first locomotive to be built by NZR, W 192, and continued to build locomotives up to the early 1920s. As well as railway work, Addington also undertook contract work such as the manufacture of gold dredge components; during the First World War, the workshops produced military equipment including aeroplane components. During the 1920s, Addington was re-geared to manufacture and overhaul rolling stock, although it continued to carry out limited overhauls on steam locomotives and the EC and EO class ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Air Brake
A railway air brake is a railway brake power braking system with compressed air as the operating medium. Modern trains rely upon a fail-safe air brake system that is based upon a design patented by George Westinghouse on April 13, 1869. The Westinghouse Air Brake Company was subsequently organized to manufacture and sell Westinghouse's invention. In various forms, it has been nearly universally adopted. The Westinghouse system uses air pressure to charge air reservoirs (tanks) on each car. Full air pressure causes each car to release the brakes. A subsequent reduction or loss of air pressure causes each car to apply its brakes, using the compressed air stored in its reservoirs. Overview Straight air brake In the air brake's simplest form, called the ''straight air system'', compressed air pushes on a piston in a cylinder. The piston is connected through mechanical linkage to brake shoes that can rub on the train wheels, using the resulting friction to slow the train. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
