Misplaced Pages

#788211

37-470: The Norwegian Railway Club runs Norwegian Heritage Trains or NMT ( Norsk Museumstog ). All the members of NMT are volunteers and their classic train activities are under government supervision. NMT is doing restoration, preservation and operation of classic trains at the 1,435 mm ( 4 ft  8 + 1 ⁄ 2  in ) standard gauge part of the Norwegian railway network . The activity of NMT

74-459: A truck (in North America). The powered wheels under the locomotive are called driving wheels . Wheels are initially cast or forged and then heat-treated to have a specific hardness. New wheels are machined using a lathe to a standardized shape, called a profile, before being installed onto an axle. All wheel profiles are regularly checked to ensure proper interaction between the wheel and

111-542: A conical profile and instead are cylindrical, such that the flanges are essential to keep the train on the track. The number of wheels per locomotive or car varies in both size and number to accommodate the needs of the railcar or locomotive. Regardless of these factors, pairs of identically sized wheels are always affixed to a straight axle as a singular unit, called a wheelset . Wheels used for road–rail vehicles are normally smaller than those found on other types of rolling stock , such as locomotives or carriages, because

148-628: A country (for example, 1,440 mm or 4 ft  8 + 11 ⁄ 16  in to 1,445 mm or 4 ft  8 + 7 ⁄ 8  in in France). The first tracks in Austria and in the Netherlands had other gauges ( 1,000 mm or 3 ft  3 + 3 ⁄ 8  in in Austria for the Donau Moldau line and 1,945 mm or 6 ft  4 + 9 ⁄ 16  in in

185-505: A standard gauge of 4 ft  8 + 1 ⁄ 2  in ( 1,435 mm ), and those in Ireland to a new standard gauge of 5 ft 3 in ( 1,600 mm ). In Great Britain, Stephenson's gauge was chosen on the grounds that existing lines of this gauge were eight times longer than those of the rival 7 ft or 2,134 mm (later 7 ft  1 ⁄ 4  in or 2,140 mm ) gauge adopted principally by

222-480: Is a stub . You can help Misplaced Pages by expanding it . This Norwegian history -related article is a stub . You can help Misplaced Pages by expanding it . This article about transport in Norway is a stub . You can help Misplaced Pages by expanding it . Standard gauge A standard-gauge railway is a railway with a track gauge of 1,435 mm ( 4 ft  8 + 1 ⁄ 2  in ). The standard gauge

259-636: Is also called Stephenson gauge (after George Stephenson ), international gauge , UIC gauge , uniform gauge , normal gauge in Europe, and SGR in East Africa. It is the most widely used track gauge around the world, with about 55% of the lines in the world using it. All high-speed rail lines use standard gauge except those in Russia , Finland , Uzbekistan , and some line sections in Spain . The distance between

296-412: Is conical, which serves as the primary means of keeping the train aligned with the track while in motion. The wheels are fixed on an axle, and when rounding a curve the mass of the train pushes the wheelset towards the outside of the track. The outside wheel rides up to contact the rail at a larger diameter, while the inside wheel drops down to contact its rail at a smaller diameter. The difference between

333-745: Is currently operated by the Ghana Railway Company Limited . Kojokrom-Sekondi Railway Line (The Kojokrom-Sekondi line is a branch line that joins the Western Railway Line at Kojokrom ) Indian nationwide rail system ( Indian Railways ) uses 1,676 mm ( 5 ft 6 in ) broad gauge. 96% of the broad gauge network is electrified. The railway tracks of Java and Sumatra use 1,067 mm ( 3 ft 6 in ). Planned and under construction high-speed railways to use 1,668 mm ( 5 ft  5 + 21 ⁄ 32  in ) to maintain interoperability with

370-445: Is not run for the purpose of profit. All income of the activity is solely used for the preservation of Norwegian railway history so that the coming generations will be allowed to experience and learn transport by train of the 19th and 20th centuries. . 60°10′8.8284″N 10°14′53.153″E  /  60.169119000°N 10.24809806°E  / 60.169119000; 10.24809806 This Norwegian rail transport related article

407-595: Is stronger than the cast iron of earlier eras. It is typically heated and pressed on to the wheel before it cools and shrinks. Resilient rail wheels have a resilient material, such as rubber , between the wheel and tire. Failure of this type of wheel was one of the causes leading up to the Eschede high-speed train crash . The most common cause of wheel damage is severe braking. This activity includes sudden braking, braking on steep gradients and braking with high weight loads. The brake shoes (or blocks) are applied directly to

SECTION 10

#1732858078789

444-598: The Liverpool and Manchester Railway , authorised in 1826 and opened 30 September 1830. The extra half inch was not regarded at first as very significant, and some early trains ran on both gauges daily without compromising safety. The success of this project led to Stephenson and his son Robert being employed to engineer several other larger railway projects. Thus the 4 ft  8 + 1 ⁄ 2  in ( 1,435 mm ) gauge became widespread and dominant in Britain. Robert

481-889: The Great Western Railway. It allowed the broad-gauge companies in Great Britain to continue with their tracks and expand their networks within the "Limits of Deviation" and the exceptions defined in the Act. After an intervening period of mixed-gauge operation (tracks were laid with three rails), the Great Western Railway finally completed the conversion of its network to standard gauge in 1892. In North East England, some early lines in colliery ( coal mining ) areas were 4 ft 8 in ( 1,422 mm ), while in Scotland some early lines were 4 ft 6 in ( 1,372 mm ). The British gauges converged starting from 1846 as

518-631: The Netherlands for the Hollandsche IJzeren Spoorweg-Maatschappij ), but for interoperability reasons (the first rail service between Paris and Berlin began in 1849, first Chaix timetable) Germany adopted standard gauges, as did most other European countries. The modern method of measuring rail gauge was agreed in the first Berne rail convention of 1886. Several lines were initially built as standard gauge but were later converted to another gauge for cost or for compatibility reasons. 2,295 km (1,426 mi) Victoria built

555-629: The advantages of equipment interchange became increasingly apparent. By the 1890s, the entire network was converted to standard gauge. The Royal Commission made no comment about small lines narrower than standard gauge (to be called "narrow gauge"), such as the Ffestiniog Railway . Thus it permitted a future multiplicity of narrow gauges in the UK. It also made no comments about future gauges in British colonies, which allowed various gauges to be adopted across

592-476: The coal mines of County Durham . He favoured 4 ft 8 in ( 1,422 mm ) for wagonways in Northumberland and Durham , and used it on his Killingworth line. The Hetton and Springwell wagonways also used this gauge. Stephenson's Stockton and Darlington railway (S&DR) was built primarily to transport coal from mines near Shildon to the port at Stockton-on-Tees . Opening in 1825,

629-581: The colonies. Parts of the United States, mainly in the Northeast, adopted the same gauge, because some early trains were purchased from Britain. The American gauges converged, as the advantages of equipment interchange became increasingly apparent. Notably, all the 5 ft ( 1,524 mm ) broad gauge track in the South was converted to "almost standard" gauge 4 ft 9 in ( 1,448 mm ) over

666-459: The course of two days beginning on 31 May 1886. See Track gauge in the United States . In continental Europe, France and Belgium adopted a 1,500 mm ( 4 ft  11 + 1 ⁄ 16  in ) gauge (measured between the midpoints of each rail's profile ) for their early railways. The gauge between the interior edges of the rails (the measurement adopted from 1844) differed slightly between countries, and even between networks within

703-485: The distances travelled by each wheel for each rotation of the axle causes the wheelset to follow the curve of the track. Almost all train wheels have a projection, called a flange, on one side to keep the wheels, and hence the train, running on the rails when the limits or tests of alignment are reached: when a bend is taken at appropriate speed, when there are strong side-winds, and to withstand most common defects in trackbed, rail and mild debris. Some wheels do not have

740-735: The first railways to the 5 ft 3 in ( 1,600 mm ) Irish broad gauge. New South Wales then built to the standard gauge, so trains had to stop on the border and passengers transferred, which was only rectified in the 1960s. Queensland still runs on a narrow gauge but there is a standard gauge line from NSW to Brisbane. NMBS/SNCB 3,619 km (2,249 mi) Brussels Metro 40 km (25 mi) Trams in Brussels 140 km (87 mi) 1,032 km (641 mi) The Toronto Transit Commission uses 4 ft  10 + 7 ⁄ 8  in ( 1,495 mm ) gauge on its streetcar and subway lines. Takoradi to Sekondi Route,

777-429: The initial gauge of 4 ft 8 in ( 1,422 mm ) was set to accommodate the existing gauge of hundreds of horse-drawn chaldron wagons that were already in use on the wagonways in the mines. The railway used this gauge for 15 years before a change was made, debuting around 1850, to the 1,435 mm ( 4 ft  8 + 1 ⁄ 2  in ) gauge. The historic Mount Washington Cog Railway ,

SECTION 20

#1732858078789

814-534: The inner sides of the rails) to be used. Different railways used different gauges, and where rails of different gauge met – a " gauge break " – loads had to be unloaded from one set of rail cars and reloaded onto another, a time-consuming and expensive process. The result was the adoption throughout a large part of the world of a "standard gauge" of 1,435 mm ( 4 ft  8 + 1 ⁄ 2  in ), allowing interconnectivity and interoperability. A popular legend that has circulated since at least 1937 traces

851-400: The inside edges of the rails is defined to be 1,435 mm except in the United States, Canada, and on some heritage British lines, where it is defined in U.S. customary / Imperial units as exactly "four feet eight and one half inches", which is equivalent to 1,435.1   mm. As railways developed and expanded, one of the key issues was the track gauge (the distance, or width, between

888-499: The origin of the 1,435 mm ( 4 ft  8 + 1 ⁄ 2  in ) gauge even further back than the coalfields of northern England, pointing to the evidence of rutted roads marked by chariot wheels dating from the Roman Empire . Snopes categorised this legend as "false", but commented that it "is perhaps more fairly labeled as 'Partly true, but for trivial and unremarkable reasons. ' " The historical tendency to place

925-405: The outermost portions of the wheel rims, it became apparent that for vehicles travelling on rails, having main wheel flanges that fit inside the rails is better, thus the minimum distance between the wheels (and, by extension, the inside faces of the rail heads ) was the important one. A standard gauge for horse railways never existed, but rough groupings were used; in the north of England none

962-399: The rail . Incorrectly profiled wheels and worn wheels can increase rolling resistance , reduce energy efficiency and may even cause a derailment . The International Union of Railways has defined a standard wheel diameter of 920 mm (36 in), although smaller sizes are used in some rapid transit railway systems and on ro-ro carriages . The running surface of most train wheels

999-411: The rest of the network. All other railways use 1,668 mm ( 5 ft  5 + 21 ⁄ 32  in ) ( broad gauge ) and/or 1,000 mm ( 3 ft  3 + 3 ⁄ 8  in ) metre gauge . BLS , Rigi Railways (rack railway) 449 km Several states in the United States had laws requiring road vehicles to have a consistent gauge to allow them to follow ruts in

1036-451: The road. Those gauges were similar to railway standard gauge. Train wheel#Wheel geometry and flange A train wheel or rail wheel is a type of wheel specially designed for use on railway tracks . The wheel acts as a rolling component, typically press fitted onto an axle and mounted directly on a railway carriage or locomotive , or indirectly on a bogie (in the UK), also called

1073-403: The rotation of the wheels while the vehicle is still moving, which may cause a flat spot on the wheel-rail interface and localized heat damage. Modern railway wheels are manufactured reasonably thick to provide an allowance of wear material. Worn wheels or wheels with a flat spot are machined on a wheel lathe if there is sufficient thickness of material remaining. Rubber-tyred metros with

1110-485: The term "narrow gauge" for gauges less than standard did not arise for many years, until the first such locomotive-hauled passenger railway, the Ffestiniog Railway , was built. In 1845, in the United Kingdom of Great Britain and Ireland , a Royal Commission on Railway Gauges reported in favour of a standard gauge. The subsequent Gauge Act ruled that new passenger-carrying railways in Great Britain should be built to

1147-475: The wheel core, and a tire ("tyre" in British English , Australian English and other variants) around the perimeter. Separate tires are a component of some modern passenger rolling stock. The purpose of the separate tire is to provide a replaceable wearing element – an important factor for steam locomotives with their costly spoked construction. In modern times the tire is invariably made from steel , which

Norwegian Railway Club - Misplaced Pages Continue

1184-532: The wheel has to be stowed clear of the ground when the vehicle is in road-going mode. Such wheels can be as small as 245 mm (9.65 in) in diameter. In Australia, wheels for road–rail vehicles should comply with the requirements of AS7514.4, which is the Australian standard for infrastructure maintenance vehicle wheels. Modern railway wheels are usually machined from a single casting, also known as monoblock wheels. Some wheels, however, are made of two parts:

1221-446: The wheel surface which generates immense amounts of thermal energy . Under normal operation, a wheel may obtain a tread temperature of 550 °C (1,022 °F). Under severe braking conditions, the generated thermal energy can contribute to thermal shock or alteration of the wheel's mechanical properties. Ultimately, acute thermal loading leads to a phenomenon called spalling . Alternatively, severe braking or low adhesion may stop

1258-434: The wheels of horse-drawn vehicles around 5 ft ( 1,524 mm ) apart probably derives from the width needed to fit a carthorse in between the shafts. Research, however, has been undertaken to support the hypothesis that "the origin of the standard gauge of the railway might result from an interval of wheel ruts of prehistoric ancient carriages". In addition, while road-travelling vehicles are typically measured from

1295-426: The world's first mountain -climbing rack railway , is still in operation in the 21st century, and has used the earlier 4 ft 8 in ( 1,422 mm ) gauge since its inauguration in 1868. George Stephenson introduced the 1,435 mm ( 4 ft  8 + 1 ⁄ 2  in ) gauge (including a belated extra 1 ⁄ 2  in (13 mm) of free movement to reduce binding on curves ) for

1332-768: Was less than 4 ft ( 1,219 mm ). Wylam colliery's system, built before 1763, was 5 ft ( 1,524 mm ), as was John Blenkinsop 's Middleton Railway ; the old 4 ft ( 1,219 mm ) plateway was relaid to 5 ft ( 1,524 mm ) so that Blenkinsop's engine could be used. Others were 4 ft 4 in ( 1,321 mm ) (in Beamish ) or 4 ft  7 + 1 ⁄ 2  in ( 1,410 mm ) (in Bigges Main (in Wallsend ), Kenton , and Coxlodge ). English railway pioneer George Stephenson spent much of his early engineering career working for

1369-589: Was reported to have said that if he had had a second chance to choose a gauge, he would have chosen one wider than 4 ft  8 + 1 ⁄ 2  in ( 1,435 mm ). "I would take a few inches more, but a very few". During the " gauge war " with the Great Western Railway , standard gauge was called " narrow gauge ", in contrast to the Great Western's 7 ft  1 ⁄ 4  in ( 2,140 mm ) broad gauge . The modern use of

#788211