Category Archives: Standards

Finescale 7mm Narrow Gauge Trackwork

John Clutterbuck wrote a series of three articles about building accurate trackwork which was originally published in Roy C Link’s Narrow Gauge & Industrial Railway Modelling Review issues 63, 64 & 65. As Roy has now sold most of the relevant back issues, John and Roy have collaborated to produce an updated electronic booklet containing all three articles. This is made available from this site on the basis that it is used for personal non-commercial use only.

Permission must be sought from John Clutterbuck and Roy C Link for further publication of this booklet (including any extracts) in any media, and use by commercial track makers. It is also not permitted to host copies of these articles on other websites. However it is permitted to provide a link to this complete post with the following URL: http://o14group.org/2008/10/31/finescale-7mm-narrow-gauge-trackwork/

The booklet can be found here: 7mm NG Trackwork Article (PDF). Please note it is a large (4.8MB) file which has been compressed as much as possible whilst still maintaining an acceptable picture quality.

Update 21/1/2016 – the quoted L&B sleeper dimensions in the table on Page 7 are incorrect – the original period sleepers are now known to be 4’6″ x 9″ x 4.5″ and the SR period are now know to be 4’6″ x 9.5″ x 4.5″

RP25 & ScaleSeven Wheel Comparison

This shows a comparison of the NMRA RP25 110 wheel profile commonly used for O14 and the ScaleSeven wheel profile for standard gauge locos, established from published web sources.

Given that most narrow gauge locos had a similar flange profile to standard gauge locos often with a slightly narrower tread, the profiles compare well enough for the RP25 wheels to be used for exact scale modelling.

RP25 and ScaleSeven Wheel Comparison
RP25 and ScaleSeven Wheel Comparison

1 in 6 Turnout Template

Narrow Gauge & Industrial Railway Modelling Review issues 63, 64 & 65 featured a series of articles by John Clutterbuck on building finescale 7mm narrow gauge track. This included a template to aid construction of a Robert Hudson 1 in 6 turnout template in O14 which is included here for group members personal use: O14 1 in 6 Turnout Template (PDF). Permission should be sought from John Clutterbuck and Roy Link for further publication or use by commercial track makers.

O14 Standards

The first published O14 standards appeared in ‘Model Railway Constructor’ magazine, September 1951. The article was titled ‘A Narrow Gauge Layout’ and was by Douglas Clayton. He advocated HO standards, less 2.5mm coupled with coarse scale ‘OO’ wheelsets set to 12.5mm back to back. A subsequent article in 1953, provided details of his layout. Very little more happened regards the development of O14 until Roy Link published a new set of standards (1993 – revised 1994) in his magazine Narrow Gauge and Industrial Railway Modelling Review. They were developed for his range of O14 kits – now produced by David Janes under the name KBscale. They are based on the proven 4mm scale EM standards (BRMSB) and are reasonably close to exact scale especially considering the variations to be found in prototype nominal 2′ gauge railways.

Roy has kindly made the revised standards available here as a download: O14 standards (pdf)