{{Infobox Model Rail Scale | name = FREMO H0 | image_filename = Fremo-19417.jpg | image_caption = Individual FREMO module with standardised end profiles and fixing holes | scale = 3.5 mm to 1 foot | ratio = 1:87 | standard = {{plainlist| * H0-Europe (single track) * H0-Mainline (double track) * FREMO-E (overhead electric) * {{lang|de|H0-Hafen}} (industrial) * H0fine (finescale) * FREMO:87 (finescale) * 00fremo (UK 1:76 scenery) }} | gauge = {{plainlist| * {{RailGauge|16.5mm}} * {{RailGauge|9mm}} }} }} thumb|right|Many FREMO modules joined together to make a large layout thumb|right|Meeting during 2010 in the Netherlands with over {{convert|1|km|mi}} of track The '''Friendship of European railway modellers''' ({{langx|de|Freundeskreis Europäischer Modellbahner}}, '''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.<ref name="slaughter-2004"/>
Single track h0 scale modules are typically {{convert|500|mm|in}} wide, of variable length, viewable from both sides. Each module comes with adjustable legs, to create a uniform top-of-rail height of {{convert|1300|mm|inch}} above floor level. Modules are physically joined together using three {{convert|12|mm|in|sigfig=1|adj=mid|-diameter}} holes and hand-tightened M8 wingbolts with washers and wingnuts. The electrical inter-connection uses two Banana connectors per track bus, over which Digital Command Control (DCC) signalling running at 14 volts is used for train control. Track uses Code 83 rails ({{convert|0.083|in|mm|abbr=in|disp=or|order=flip}} high), with a minimum curve radius of {{convert|2000|mm|ftin|disp=x| (}}; representing {{convert|175|m|ft|round=5|disp=or}} at 1:87) and fixed track centre-line spacing of {{convert|46|mm|in|disp=x| (}}; representing {{convert|4|m|ft|disp=or|sigfig=2}} separation at 1:87 scale).<ref name="fremo-standard-2013">{{cite web |title=FREMO H0 – Modular Standard Standard Gauge 1435 mm in 1:87 |url=https://www.fremo-net.eu/en/modular-systems/h0-scale/h0-europe/h0-normentwurf/ |website=FREMO |date=2013-12-01 |lang=en |access-date=2019-08-19 |archive-date=2019-08-19 |archive-url=https://web.archive.org/web/20190819170053/https://www.fremo-net.eu/en/modular-systems/h0-scale/h0-europe/h0-normentwurf/ |url-status=dead }}</ref>
Some general aspects, such as rigid construction of modules, are derived from the {{langr|de|Normen Europäischer Modellbahnen}} NEM 900 standards published by MOROP.<ref name="barkhoff-2014">{{cite magazine|url=x|url-status=unfit|archive-url=http://translog.org/pub/MIBA/MIBA-Spezial%20%E2%84%96102.pdf|archive-date=22 October 2014|date=21 October 2014|accessdate=3 September 2014|title=Motive für Module|trans-title=Motives for Modules|magazine=MIBA Spezial|issue=102|first=Reinhold|last=Barkhoff}}</ref> In 1995, the North American '''Free-mo''' standards were based on those of FREMO, with a number of changes made.<ref>{{cite web | url=http://www.free-mo.org|title=The Official Free-mo Standard}}</ref><ref name="slaughter-2004">{{cite web|url=https://www.nwhs.org/modeling/Free-moGuide.pdf|title=Overview|work=A Gentle Guide to the Free-mo Standards|first=Robert|last=Slaughter|date=8 February 2004|page=2|accessdate=1 September 2018}}</ref>
== 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. <ref>{{cite web | url=http://www.free-mo.org/about/history/|title=The Official Free-mo Standard - A Brief History or Free-mo}}</ref>
== N-scale variant == In 2004, the traditional Free-mo standard was adapted for N scale (1:160).<ref>{{Cite web|title=Free-moN|url=http://free-mon.wesleysteiner.com/history.html|access-date=2021-05-13|website=free-mon.wesleysteiner.com}}</ref> It uses Code 55 rail at a nominal height of {{convert|50|in}}. Curves should not have a radius of less than {{convert|22|in}} on the main line and use turnouts sized {{abbr|No.|Number}} 6 or larger.
== NMRA British Region Freemo standard == In 2011 the NMRA British Region released a set of standards called Freemo, Recommended Specifications For HO Scale Modules.<ref>{{cite web | url=https://www.nmrabr.org.uk/ho-freemo-module-specs/|title=NMRA British Region, Recommended Specifications For HO Scale Modules}}</ref>
== 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. {{As of|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.<ref>{{cite web | url=https://amra.asn.au/wp-content/uploads/2024/07/AMRA-freeform-standard-2.4.pdf|title=AMRA Free Form Module Standard}}</ref>
==See also== * List of rail transport modelling scale standards
==References== {{reflist}}
==External links== * {{commonscat-inline|FREMO}} * {{official website|https://www.fremo-net.eu/en/home}} * {{official website|http://www.free-mo.org}}
Category:Rail transport modelling
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