3 ft gauge rail modelling

United States

gauge railroads were widespread in the United States in the period 1880-90. While most of these railroads were converted to standard gauge by the start of the 20th century, a number of lines survived till the Second World War, and became popular subjects for modelling.

Probably the most popular prototype is the Denver and Rio Grande Western Railroad, followed by other Colorado railroads such as the Rio Grande Southern and Colorado and Southern. Other railroads from California and the eastern states are also popular.

Scale and gauge combinations used in modelling include:

:* Nn3 – Using N scale (1:160 ratio) with Z () gauge track. :* HOn3 – Using HO scale (1:87 ratio) with gauge track. Historically the most popular of the scale/gauge combinations. :* Sn3 – Using S scale (1:64 ratio) with gauge track. Limited commercial support. :* 55n3 - Using 5.5 mm scale (1:55 ratio) with gauge track. Supported by 5.5mm association. :* On3 – Using O scale (1:48 ratio) with gauge track. Probably the second most popular scale. :* F scale – using 1:20.3 ratio with gauge track. This scale uses the same gauge as, and is derived from, the popular G scale. It is the largest popular scale/gauge combination, and is suitable for use in the garden.

Perhaps not surprisingly, most narrow gauge modellers in the United States model US gauge prototypes. However, these prototypes are also popular modelling subjects outside of the United States.

Ireland, the Isle of Man, and Britain

gauge was the narrow gauge used in Ireland, and the gauge of almost all the railways on the Isle of Man. It was also used on a handful of railways in Britain. However, modelling these gauge railways is very much a minority pursuit, especially when compared with other prototypes such as the Welsh narrow gauge. Scales and gauges used include:

Generally these scale/gauge combinations do not have much commercial support, and therefore modellers are required to construct most of their models from scratch. 00n3 is the exception and there is good support from manufacturers like Branchlines (Isle of Man Railway and some Irish lines), Worsley Works (mostly Irish railway 'scratch aid' brass kits) and Alphagraphix (mostly card Irish rolling stock kits). Some model kits are not available new due to production having ceased but can be found on the preowned market including the Backwoods models of Irish narrow gauge locomotives and rolling stock.

References

References

1. Doyle, Jim. (2020-01-27). "3-foot Narrow Gauge Railway".
2. wrp_admin. (2010-01-06). "Introduction to HO Scale Narrow Gauge".