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″