Revision history
The Guidelines have grown by accretion — each release tightening or extending what came before, with original geometry held stable so older modules continue to join newer ones.
| v1.0 | 26 Mar 2008 | Initial release. |
|---|---|---|
| v2.0 | 22 Dec 2009 | Additions and minor corrections. |
| v2.0.1 | 9 Feb 2017 | Section 11 (kit provider details) updated. |
| v2.0.2 | 18 Jun 2019 | Section 2 box dimensions clarified to exclude skyboard. |
| DRAFT | Sep 2021 | N and HO/OO online interactive version. |
| v2.0.3 | 15 May 2023 | T-TRAK-TT addendum included. |
Contributors
The standards as they stand today are the work of a small group of Australian modellers. Each name below contributed text, drawings, measurements or testing time to one or more revisions.
- Andrew George — editor and publisher; St Arnaud, Victoria.
- David McMorran — contributor.
- Philip Hillebrand — contributor.
- Graham Cocks — contributor; lead on the TT-scale addendum.
- Christopher Maloney — contributor.
- Rodney Bates — TT-scale (with Graham Cocks).
- David Bromage — Mini-T (with Graham Cocks).
- John Rumming — single-track and Mini-T module reference designs.
Original concept
The international T-TRAK form was developed by Lee Monaco-FitzGerald in the United States, building on a concept first proposed in Japan in 2000. The Australian Guidelines adapt that core form to local materials, exhibition trestles and scenic conventions, but the fundamental idea — small modules, level mainlines, Kato Unitrack at the joining faces — remains as Lee Monaco-FitzGerald defined it.
Licence
The original Australian T-TRAK Guidelines are published under Creative Commons Attribution — NonCommercial — NoDerivatives 2.5 Australia. Copyright © 2021 Andrew George.
The standards numbers, dimensions and part references reproduced on this site are facts, not creative expression — but where the prose on these pages paraphrases the source document, attribution belongs to the contributors named above.
About this site
This is an independent, community-built reading view of the Australian T-TRAK Guidelines. It exists to make the standards accessible to new modellers, schools and clubs. It carries no advertising, and earns no income.
The information here is the standards document's information; the framing and the interface are original work.
Glossary
Common terms used across the Guidelines and across this site, in plain language.
| Unitrack | track system | Kato's pre-ballasted track system; the structural backbone of T-TRAK. |
|---|---|---|
| Unijoiner | rail clip | The sprung rail clip that bridges two pieces of Unitrack — and the gap between two T-TRAK modules. |
| Skyboard | backdrop | The rear backboard of a module, painted light blue, providing scenic depth. |
| Front setback | dimension | Distance from the front face of the module to the front edge of the front track's ballast. |
| Track centres | dimension | Distance from front edge of front track's ballast to front edge of rear track's ballast. |
| Meet | event | A gathering at which modules are connected into a layout for running, public exhibition, or both. |
| VNSC | group | Victorian N Scale Collective — authors of the v0.3 bus convention used widely in Australia. |
| IHMRC | group | Ipswich Heritage Model Railroad Club — Queensland-based contributors to the bus standard. |
| Mini-T | variant | Smaller-footprint N-scale variant; 150 mm wide, 62 mm length step. |
| T-1-TRAK | variant | Single-track variant for branchline operation. |
| Junction module | geometry | 365 × 596 mm; pairs opposite a double corner. |
| Tillig Bedding Track | track system | The track system used for the TT-scale standard. |
Australian states modules come from
Modules at a national-scale meet typically arrive from every state and territory. The grid below covers all eight.