2 mm scale explained

2 mm finescale
Image Filename:2mm scale steam locomotive.jpg
Image Caption:A 2 mm scale steam locomotive in unpainted condition
Widthpx:300px
Scale:2 mm to 1 ft
Ratio:1:152
Prototype Gauge:Standard gauge
Website:2mm Association

2 mm scale, often 2 mm finescale is a specification used for railway modelling, largely for modelling British railway prototypes. It uses a scale of 2 mm on the model to 1 foot on the prototype, which scales out to 1:152.The track gauge used to represent prototype standard gauge (4 feet inches) is . Track and wheels are closer to dead scale replicas than commercial British N.

Standard

The 2 mm standards were proposed by Mr. H H Groves in the early 1960s and revised to their current specification in November 1963 by Geoffrey Jones. It is similar in size to the slightly larger British N scale at 1:148, and the slightly smaller European/American N scale at 1:160; though it predates both.[1]

Since 2 mm scale is very close to the 1:148 British N scale, a hybrid specification can be modelled by re-wheeling proprietary British N-scale models to the 9.42 mm track gauge. This hybrid specification results in a track gauge equivalent to 4inchesftNaNinchesin (ftin), slightly narrower than the prototype 4 feet inches. There is an advantage however in the narrower gauge as this allows more room for the outside motion of outside cylindered steam locomotives, which must be overscale in order to function correctly. This approach is often recommended for beginners. However, 2 mm-scale and hybrid-scale models do not usually sit well together due to the larger size of the latter.

Supplementary Standards

Like Protofour, 2 mm standards have been extended to several other prototypes of both wider and narrower gauge with the same tolerances such as Brunel's gauge,[2] Japan Rail's narrow gauge and so on.

FiNescale Standard

The FiNescale standard in use for European prototypes is identical to 2mmFS, with the exception of a to-scale rail gauge of .

Appreciation

One major effect of the standard is to improve the appearance of the track as opposed to N scale, where it is overly tall. Linking carriages with three link chains has been successfully achieved in using the standard.

Support

No ready-to-run models are available in 2 mm scale, and although there is some availability of kits and components, some model-making skill is normally required.

There is an active association, The 2mm Scale Association, for modellers in this scale, who supply components, tools and jigs, publish a bi-monthly magazine, organise local groups, and promote modelling in the scale.[3]

Exhibition layouts

See also

Further reading

External links

Notes and References

  1. Web site: Standards . 2024-05-11 . 2mm.org.uk.
  2. Web site: BGS standards . Broad Gauge Society . 2021-05-11.
  3. Web site: Products . 2024-05-11 . 2mm.org.uk.
  4. Cliff. Nigel. 2008. The Groves and Rydes Vale . Model Railway Journal . 185. 0267-3207. 223.
  5. Collins. Mike. February 2016. Project Layout — Kineton — 2 mm Finescale. British Railway Modelling. 56–59.