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NZR Aa Class
The NZR AA class consisted of ten steam locomotives built by Baldwin Locomotive Works in 1914 to an order by Chief Mechanical Engineer, H. H. Jackson for operation on New Zealand's national rail network. Introduction and design Built to a similar but vastly improved design to the Q class of 1901, they had a wheel arrangement of 4-6-2 and were suited to hauling freight services in the North Island (Originally they were to be classed QB but as they were to supplement the A class, given their aforementioned designation.) The United States built locomotives were an urgent order needed due to heavy demand with both New Zealand and British workshops unable to supply as the First World War was draining resources and manpower for the war effort. Construction was completed less than two months after the order was placed and all ten entered service in New Zealand in June 1915. Bar frames were used by the American builders instead of NZR's preferred plate frames, and the class had superh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR G Class (1928)
The NZR G class was a type of Garratt steam locomotive used in New Zealand, the only such Garratt type steam locomotives ever used by the New Zealand Railways (NZR). They were ordered to deal with traffic growth over the heavy gradients of the North Island Main Trunk (NIMT) and to do away with the use of banking engines on steep grades. They were one of the few Garratt designs to employ six cylinders. A mechanical stoker was used to feed coal into the locomotive. Introduction About 1913, General Manager E H Hiley considered the importing of 10 articulated Garratt engines and 10 Pacifics; however, with the success of the AB class and WAB class Pacifics no more was heard of Garratts. Then with the retirement in 1925 of the Chief Mechanical Engineer E E Gillon his successor G S Lynde invited Beyer, Peacock & Company of England to suggest a suitable Garrett for the NIMT, and they were then asked to quote for engines with either four or six cylinders. But the three six-cylinder e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR AB Class
The NZR AB class was a class of 4-6-2 Pacific tender steam locomotive that operated on New Zealand's national railway system for New Zealand Railways (NZR). Originally an improvement on the 1906 A class, 141 were built between 1915 and 1927 by NZR's Addington Workshops, A & G Price of Thames, New Zealand, and North British Locomotive Company, making the AB class the largest class of steam locomotives ever to run in New Zealand. An additional eleven were rebuilt from the tank version of the AB – the WAB class – between 1947 and 1957. Two North British-made locomotives were lost in the wreck of the ''SS Wiltshire'' in May 1922. Construction and design The genesis of the AB class originated from the construction of A class 4-6-2 No. 409 at Addington Railway Workshops in 1906. A two-cylinder simple-expansion locomotive, 409 was initially classified AB to differentiate it from the four-cylinder compound A and AD class locomotives, which were by and large of a similar design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR A Class (1906)
The NZR A class were a class of steam locomotives built in 1906 with a 4-6-2 wheel arrangement for the New Zealand Railways Department (NZR). The class should not be confused with the older and more obscure A class of 1873. They were designed by the NZR's Chief Mechanical Engineer, A. L. Beattie and his Chief Draughtsman, G. A. Pearson to replace less powerful locomotives struggling with increasing loads on the South Island Main Trunk Railway, and in anticipation of the traffic volumes that would be created upon the completion of the North Island Main Trunk railway. Origin and design The Baldwin Q had established the Pacific as the way forward for Express passenger locomotives, but the C.M.E decided that greater efficiency was needed. The new locomotives were therefore designed as compounds. The Vauclain system had proved ineffective in New Zealand so the type attributed to Frenchman Alfred de Glehn was adopted. The first four had Stephenson valve gear inside and Walschaerts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NZR Q Class (1901)
The NZR Q class was an important steam locomotive class not only in the history of New Zealand's railway network but also in worldwide railways in general. Designed by New Zealand Government Railways' (NZR) Chief Mechanical Engineer A. L. Beattie and ordered from the Baldwin Locomotive Works in 1901, they were the first locomotives in the world to be built with the wheel arrangement of 4-6-2. This wheel arrangement came to be known as the ''Pacific'' type after the voyage the completed locomotives had to make across the Pacific Ocean to New Zealand. A few instances of the 4-6-2 wheel arrangement are known to have existed prior to 1901, but these were all reconstructions of locomotives that were originally built with a different wheel arrangement, thereby making the thirteen members of the Q class the first "true" Pacifics in the world. The Pacific style went on to become arguably the most famous wheel arrangement in the world. Design The Q class's design stems from the req ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Island Main Trunk
The North Island Main Trunk (NIMT) is the main railway line in the North Island of New Zealand, connecting the capital city Wellington with the country's largest city, Auckland. The line is long, built to the New Zealand rail gauge of and serves the large cities of Palmerston North and Hamilton. Most of the NIMT is single track with frequent passing loops, but has double track - * between Wellington and Waikanae, except for of single-track through tunnels between North Junction ( from Wellington) and South Junction, ( from Wellington), on the Pukerua Bay to Paekakariki section, * between Hamilton and Te Kauwhata (except for the single-track Waikato River Bridge at Ngāruawāhia), and * between Meremere and Auckland Britomart. Around (approximately 65%) of the line is electrified in three separate sections: one section at 1600 V DC between Wellington and Waikanae, and two sections at 25 kV AC: between Palmerston North and Te Rapa (Hamilton) and between Papakura and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baldwin Locomotives
Baldwin is a Germanic name, composed of the elements ''bald'' "bold" and ''win'' "friend". People * Baldwin (name) Places Canada * Baldwin, York Regional Municipality, Ontario * Baldwin, Ontario, in Sudbury District * Baldwin's Mills, Quebec United States * Baldwin County, Alabama * Baldwin, Florida * Baldwin, Georgia * Baldwin County, Georgia * Baldwin, Illinois * Baldwin, Iowa * Baldwin, Louisiana * Baldwin, Maine * Baldwin, Maryland * Baldwin, Michigan * Baldwyn, Mississippi * Baldwin, Chemung County, New York * Baldwin, Nassau County, New York ** Baldwin (LIRR station) * Baldwin, North Dakota * Baldwin, Pennsylvania * Baldwin, Wisconsin * Baldwin (town), Wisconsin Other places * Baldwin Street, in Dunedin, New Zealand, the world's steepest street * Baldwin Hills, neighborhood in Los Angeles, California * Montgomery, Powys, named in Welsh "Trefaldwyn", meaning "The Town of Baldwin" Companies * Baldwin Locomotive Works, one of the world's largest builders of ... [...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] |
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] |
Palmerston North–Gisborne Line
The Palmerston North–Gisborne Line (PNGL) is a secondary main line railway in the North Island of New Zealand. It branches from the North Island Main Trunk at Palmerston North and runs east through the Manawatū Gorge to Woodville, where it meets the Wairarapa Line, and then proceeds to Hastings and Napier in Hawke's Bay before following the coast north to Gisborne. Construction began in 1872, but the entire line was not completed until 1942. The line crosses the runway of Gisborne Airport, one of the world's only railways to do so since Pakistan's Khyber Pass Railway closed. In conjunction with the Moutohora Branch that ran north from Gisborne between 1900 and 1959, the line was originally intended to connect to the East Coast Main Trunk, described in 1875 as the North Island trunk line, but the difficult inland section between the Tāneatua Branch in the Bay of Plenty and the Moutohora Branch was never completed. The line has been freight only since October 2001, whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marton–New Plymouth Line
The Marton–New Plymouth line (MNPL) is a secondary main line railway in the North Island of New Zealand that links the Taranaki and Manawatū-Whanganui regions. It branches from the North Island Main Trunk railway (NIMT) at Marton and runs near the South Taranaki Bight of the west coast before turning inland, meeting the Stratford–Okahukura Line (SOL) at Stratford and running to New Plymouth. Construction of the line was completed in 1885, and along with the SOL it provided an alternate route to the NIMT from the SOL's completion in 1933 until the latter was mothballed in 2010. In its early days it was plied by the North Island's first regional express, the New Plymouth Express, but it has been freight only since the cancellation of the last passenger services in 1977. Construction Construction of the line commenced in the mid-1870s from both the southern and northern ends. The line was completed when the two ends met between Hāwera and Manutahi in 1885. Souther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
