FREMO

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The Friendship of European railway modellers (, FREMO) is a modular rail transport modelling standard. Individual track and scenery modules are built to a common standard and are joined together to make larger model railway layouts. The FREMO standards were created following a meeting in Europe in 1981.

Single track modules are wide, of variable length, viewable from both sides. Each module comes with adjustable legs, to create a uniform top-of-rail height of above floor level. Modules are physically joined together using three holes and hand-tightened M8 bolts with washers and wingnuts. The electrical inter-connection uses two per track bus, over which Digital Command Control (DCC) signalling running at 14 volts is used for train control. Track uses Code 83 rails ( high), with a minimum curve radius of ; representing at 1:87) and fixed track centre-line spacing of ; representing separation at 1:87 scale).

Some general aspects, such as rigid construction of modules, are derived from the NEM 900 standards published by MOROP. In 1995, the North American Free-mo standards were based on those of FREMO, with a number of changes made.

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North American standards In 1994 Chris Palomarez and Art Armstrong at the San Luis Obispo Model Railroad Club (SLOMRC) developed the Free-mo Standard based on the European FREMO concept.

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N-scale variant In 2004, the traditional Free-mo standard was adapted for N scale (1:160). It uses Code 55 rail at a nominal height of . Curves should not have a radius of less than on the main line and use turnouts sized  6 or larger.

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NMRA British Region Freemo standard In 2011 the NMRA British Region released a set of standards called Freemo, Recommended Specifications For HO Scale Modules.

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Australian Model Railway Association standard The Australian Model Railway Association has a set of standards based on FREMO called the "AMRA Free Form Module Standard." Version 2.4 of the standard was published in July 2024. , there are standards for HO and N Scales, with an O Scale version under development in collaboration with the Aus7 O Scale Modeller's Group. The AMRA standard is similar to the FREMO standard, but uses a slightly lower rail height of 1,200 mm and uses M6 wing bolts.

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See also

• List of rail transport modelling scale standards

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External links

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