Sn3½

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Sn3½
Scale 3⁄16 in to 1 ft
Scale ratio 1:64
Model gauge 16.5 mm (0.65 in)
Prototype gauge 3 ft 6 in (1,067 mm) Cape gauge

In rail transport modelling, Sn3½ is a scale/gauge combination derived from S scale to represent narrow gauge (3 ft 6 in or 1,067 mm Cape gauge) track by using 16.5 mm (0.65 in) gauge track (the same as HO gauge). The scale is 1:64.

Sn3½ is popular in South Africa, Australia (particularly Western Australia,[1] Queensland[2] and Tasmania[3] where narrow gauge systems exist) and New Zealand.[4]

Track

As Cape gauge track scales down to 16.5mm at 1:64, modelers use HO gauge track (which represents Standard gauge at 1:87 scale) on Sn3½ layouts.[5]

References

Notes

  1. ↑ "Australian Model Railway Association Western Australian Branch Inc". December 2012. Retrieved 1 February 2013. 
  2. ↑ "AMRA Queensland - S scale group". 1 February 2013. 
  3. ↑ "Rail Tasmania - Modelling the Railway of Tasmania". 12 October 2012. Retrieved 1 February 2013. 
  4. ↑ "Modelling the railways of New Zealand". 20 March 2013. Retrieved 1 February 2013. 
  5. ↑ "Modeling the dream". Grant Morrell. 

Bibliography

  • Mackay, Stuart (2012). Modelling the 3'6" Gauge Railways of Western Australia 1894-1987: In Sn3½ Scale. Volume 1. Willetton, WA, Australia: Stuart D Y Mackay. ISBN 9780987310101. 

See also

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