Gn15 is a rail modelling scale , using G scale 1:22.5 scale trains running on H0 / 00 gauge ( 16.5 mm / 0.65 in ) track, representing minimum gauge and miniature railways . Typical models built are between 1:20.3 and 1:24, or up to 1:29.
5-407: Normen Europäischer Modellbahnen NEM 010 specification defines IIp for modelling 300–400 millimetres (12–16 in) gauge. Gn15 modeling is a relatively new phenomenon in the model railroading world. While the idea of this scale has existed for some time, as evidenced by the early efforts of Marc Horovitz, editor of Garden Railways magazine, Gn15 did not gain any measure of popularity until
10-471: The Sidelines range of models. Following the advent of these kits, a few other lines of kits became available. Initial community development took place on Yahoo email groups , but these have been superseded by the forums at the now defunct Gn15.info as the primary form of communication between the far flung practitioners of this scale. Alongside Gn15 other modeling scales have developed to cover both
15-964: The UK as Normal European Modelling Standards ( NEM Standards )) are standards for model railroads , issued by the MOROP . The NEM standards are defined and maintained by the Technical Commission of the MOROP in collaboration with model railroad manufacturers. The NEM standards define the model railroad scales and guide manufacturers in creating compatible products and assist modellers in constructing model railroad layouts that operate reliably. The standards cover areas like suggested grades , turnout radii, wheel profiles, coupling designs and Digital Command Control (DCC) and are mostly scale specific. A fundamental principle in NEM standards are compromises in
20-792: The exact scale reduction ratio in order to favour operational reliability of model railroad systems. An example for this is wheel flanges which tend to be proportionally wider in smaller scales to ensure reliable operation. The NEM standards cover areas similar to the standards and recommended practices defined by the National Model Railroad Association (NMRA) in the United States , but the two standards are not universally interchangeable. In recent years, MOROP and NMRA have been working more closely together to establish common standards for developments such as DCC. European model railroad manufacturers generally follow
25-837: The modelling of minimum gauge lines in scales smaller than G, and 'miniature' lines (less than 15 in / 381 mm ) in G scale. O9 or On15 is the use of N gauge track in 7mm scale to represent a 'minimum gauge' line. In comparison, GNine is the use of 9mm track to represent 'miniature' lines. GNine is a 'flexible' term for scale, referring to modelling using garden railway scales and N gauge track. GNine models can be built to scales between 7/8" and 1:35 representing anything between 5 in ( 127 mm ) gauge and 12 + 1 ⁄ 4 in ( 311 mm ) miniature railways. Normen Europ%C3%A4ischer Modellbahnen German : Normen Europäischer Modellbahnen ( French : Normes Européennes de Modélisme ferroviaires , literally European Standards for Model Railways , known in
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