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Encyclopedia > OO gauge
OO
OO scale model of a British Rail Class 25 shown with an 18 mm coin for size.
Scale per foot: 4mm to 1ft
Scale ratio: 1:76.2
Gauge: 16.5mm
Prototype Gauge: Standard gauge

OO gauge or 00 gauge model railways are the most popular standard in the United Kingdom. It is one of several 4 mm scale standards (4 mm to the foot (304.8 mm), or 1:76.2) in use, and the only one served by mass market manufacturers. 00 uses 16.5 mm gauge track, which is inaccurate for 4 mm scale. Image File history File linksMetadata Size of this preview: 800 × 544 pixel Image in higher resolution (899 × 611 pixel, file size: 436 KB, MIME type: image/jpeg) U.K. Prototype model of an OO scale (1:76. ... This article is about the defunct entity British Railways, which later traded as British Rail. The History of rail transport in Great Britain is covered in its own article. ... Description The British Rail Class 25 diesel locomotives, also known as the Sulzer Type 2, were built from 1961. ... The British decimal Five Pence (5p) coin was issued in 1968 in preparation for the forthcoming decimalisation of the coinage. ... The concept of scale is applicable if a system is represented proportionally by another system. ... As railways developed and expanded one of the key issues to be decided was that of the rail gauge (the distance between the two rails of the track) which should be used. ... This article needs cleanup. ... 4 mm scale is the most popular model railway scale used in the United Kingdom. ...

Contents

History

Double-0 scale model railways were launched by Bing in 1921 as 'The Table Railway', running on 16.5 mm track and scaled at 4 mm to the foot. In 1922, the first models of British prototypes appeared. Initially all locomotives were powered by clockwork, but the first electric power appeared in autumn 1923. Bing may mean: Look up bing in Wiktionary, the free dictionary. ... Year 1923 (MCMXXIII) was a common year starting on Monday (link will display the full calendar) of the Gregorian calendar. ...

Hornby Railways Flying Scotsman locomotive on an 00 gauge layout
Hornby Railways Flying Scotsman locomotive on an 00 gauge layout

OO scale uses the same track gauge as H0 gauge (3.5 mm to the foot, 1:87). However, the large propulsion mechanisms could not fit into the small British prototypes, so the scale was enlarged to 4 mm to the foot without altering the gauge. This means that the scale gauge represents 4'1½", seven inches narrower than the prototype 4'8½". It is also used to represent the 5' 3" Irish gauge, where it is a scale 13½ inches too narrow. These noticeable differences are aggravated by the over-scale rail section, over-scale wheel width and very deep wheel flange. These departures from scale require much larger clearances on pointwork and are particularly noticeable when looking down the track. Image File history File linksMetadata Download high-resolution version (1024x768, 796 KB) © Les Chatfield aka Elsie http://www. ... Image File history File linksMetadata Download high-resolution version (1024x768, 796 KB) © Les Chatfield aka Elsie http://www. ... Hornby Railways is the leading brand of model railway in the United Kingdom. ... This article is about the locomotive the Flying Scotsman. For the passenger service, see Flying Scotsman (train). ... HO scale (H0 scale in continental Europe) is the most popular scale of model railway in most of the world (outside the United Kingdom, where the slightly larger 00 gauge is most common). ... ‹ The template below (Unit of length) is being considered for deletion. ... The word turnout can refer to: Voter turnout A railroad switch or point This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...


In 1932 the Bing company collapsed, but the Table Railway continued to be manufactured by the new Trix company. Trix decided to use the new H0 standard, being approximately half of 0 gauge (1:48 scale). Year 1932 (MCMXXXII) was a leap year starting on Friday (the link will display full 1932 calendar) of the Gregorian calendar. ... Trix was a German company that originally made metal construction sets. ...


In 1938, the Meccano Company launched a new range of 00 models under the trade name of Hornby Dublo, and 00 gauge has remained the UK's most popular ever since. Year 1938 (MCMXXXVIII) was a common year starting on Saturday (link will take you to calendar). ... Meccano Ltds Meccano logo. ... It has been suggested that Lyddle End and Skaledale be merged into this article or section. ...


In the United States, Lionel Corporation introduced a range of 00 models in 1938 as well. Soon other companies followed but it did not prove popular and remained on the market only until 1942. 00 gauge was quickly eclipsed by H0 scale. Lionel Corporation was an American toy manufacturer, specializing in toy trains and model railroads. ... Year 1942 (MCMXLII) was a common year starting on Thursday (the link will display the full 1942 calendar) of the Gregorian calendar. ...


OO today

The two main manufacturers of ready-to-run model railways are Hornby Railways and Bachmann Branchline, a subsidiary of Bachmann Trains. A third major manufacturer of accessories (particularly track) is Peco. Hornby Railways is the leading brand of model railway in the United Kingdom. ... Bachmann Branchline is a brand name of Bachmann Industries used for British outline OO scale model railways. ... Bachmann Industries (originally Bachmann Bros. ... Peco is a UK-based manufacturer of model railway accessories, especially trackwork. ...


4 mm Finescale Standards

Many experienced modellers find the 00 standard produces a "narrow gauge" appearance when the model is viewed from head on. Greater accuracy is possible using either EM gauge or the closer to exact scale P4 gauge track. EM gauge is a gauge of model railway, 4 mm scale. ... P4 gauge, also known as protofour, 4 mm finescale, and S4 is a model railway standard of 4 mm scale and accurate 18. ...


Whilst flextrack is available for both EM and P4 gauges[citation needed], ready-to-run (RTR) point and crossing (P&C) work is not available, so P&C trackwork must be constructed by the modeller. Kits for doing this are available from sources such as C&L Finescale, Marcway, SMP and the P4 track company. Several of these kits are also available for the OO modeller who aims for more realistic track, since most RTR track does not represent any British prototype and the sleeper spacing is too close together for scale. EM gauge has slightly overscale flanges and flangeways on point and crossing work; P4 is closer to scale but the smaller flanges and flangeways on P&C work expose poor track construction.


See also

Related scales

  • OO9 - Used for modelling 2 ft narrow gauge railways in 4mm scale
  • HO - 3.5mm scale using the same 16.5mm gauge track as OO.
  • EM - 4mm scale using 18.2mm gauge track.
  • P4 - A set of standards using 18.83 mm is accurate for 4mm scale.

009 redirects here. ... HO scale (H0 scale in continental Europe) is the most popular scale of model railway in most of the world (outside the United Kingdom, where the slightly larger 00 gauge is most common). ... EM gauge is a gauge of model railway, 4 mm scale. ... P4 gauge, also known as protofour, 4 mm finescale, and S4 is a model railway standard of 4 mm scale and accurate 18. ...

Manufactures

  • Bachmann Branchline - One of the largest manufacrures of ready to run OO
  • Dapol - Produce kits and ready to run wagons
  • Heljan - Produce a small number of locomotives and wagons
  • Hornby Railways - One of the largest manufacturers of ready to run OO
  • Lima - Produced budget OO ready to run, bought by Hornby
  • Peco - Produce a wide range of track

Bachmann Branchline is a brand name of Bachmann Industries used for British outline OO scale model railways. ... Dapol Ltd are a United Kingdom company which designs and manufacturers model railway products at its factory near Chirk on the border between England and Wales. ... A railroad car or railway carriage (or, more briefly, car or carriage not to be confused with railcar, sometimes also wag(g)on), is a vehicle on a railroad (or railway) that is not a locomotive — one that provides another purpose than purely haulage, although some types of car are... Heljan are a model railway company who have recently diversified into modelling the British scene, and since 2002 have released several OO gauge diesel locomotives, and recently released several O gauge models. ... Hornby Railways is the leading brand of model railway in the United Kingdom. ... Lima S.p. ... Peco is a UK-based manufacturer of model railway accessories, especially trackwork. ...

External links

  • Double O gauge Association
    • History of OO gauge

  Results from FactBites:
 
OO gauge - Wikipedia, the free encyclopedia (372 words)
OO gauge model railways are the most popular standard in the United Kingdom, being one of several 4 mm scale standards (4 mm to the foot (305 mm), or 1:76.2) in use, but the only one served by mass market manufacturers.
OO uses 16.5 mm gauge track, which is inaccurate for 4 mm scale (it is accurate for HO scale).
OO gauge was based on HO scale (3.5 mm:1 ft (305 mm)), and kept the same gauge.
P4 gauge - Wikipedia, the free encyclopedia (127 words)
P4 gauge, also known as protofour, 4 mm finescale, and S4 is a model railway standard of 4 mm scale and accurate 18.83 mm gauge track.
As the name implies, P4 gauge is accurately to scale for 4 mm scale modelling, while other track gauges (such as OO gauge and EM gauge) used for standard gauge prototypes are less accurate approximations.
As well as a track gauge, P4 also specifies the exact wheel profile and track parameters to use, which are largely an exactly to scale version of real life standards.
  More results at FactBites »

 
 

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