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North Raleigh Model Railroad Club

T-TRAK Division

 
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Table of Contents

Introduction

  What is T-TRAK?

T-TRAK Module Information

  Straight Modules

  Corner Modules

  Junction Modules

  Special Modules

  Track

  Wiring

  DCC Wiring

  Scenery

References

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Introduction

The T-TRAK Division was formed when one member constructed a number of T-TRAK modules for his grand-daughter and included them in the T-TRAK layout at the 2010 National NTRAK Show in Danville, VA. These modules, combined with two modules constructed by a second member, were displayed and operated at a train show at the North Carolina State Fairgrounds.

What is T-TRAK?
Just like NTRAK, T-TRAK is a modular model railroad system. The standard includes several scales, but our club is modeling in N Scale. T-TRAK modules include a two-track mainline mounted on low-profile modules that are intended to sit atop tables, such as those found in hotel meeting rooms. The T-TRAK standard calls for the use of Kato Unitrack for the mainline tracks.

Because of its small size, T-TRAK allows a modeler to have a layout at home on a folding table where a more normal N Scale layout would take more space, and may not be possible. The T-TRAK Division can also set up in locations that would not be readily available for NTRAK modules, such as retirement homes. T-TRAK can usually be set up more quickly than NTRAK which makes it ideal for shows with a limited time period.

The specifications for T-TRAK modules are listed on the official T-TRAK web site at www.t-trak.org. The NRMRC uses the alternate track spacing of 33mm called out in the specs. More information is provided below.

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T-TRAK Module Information

 
Straight Modules

Straight modules will follow the T-TRAK Standards as defined at t-trak.org. Modules may be the standard 8¼" minimum depth or be up to 14" deep, depending on the desires of the modeler. A single module must be 12-1/8" wide, but multiple width modules are permitted. The track spacing adopted by the North Raleigh Model Railroad Club is the alternate standard of 33mm.

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Corner Modules

Corner modules will follow the T-TRAK Standards as defined at t-trak.org. Outside corners will be 14-3/8" square and inside corners will be 18¼" square. Track spacing will be the alternate standard of 33mm.

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Junction Modules

Junction modules provide flexibility for larger layouts and layouts with multiple T-TRAK loops. Junction modules will follow the Junction Module Standards defined by Northern Virginia NTRAK's T-TRAK Division at nvntrak.org/t-trak/T-TRAK-junction.pdf. Junction modules will be 23-7/16" wide and 14-3/8" deep.

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Special Modules

Some members may wish to model a specific scene such as a large switching yard or industry. Such modules may be of any reasonable size as long as their overall length matches the T-TRAK standards and their depth allows normal placement in a T-TRAK layout. Such modules must not interfere with the normal operation of the layout. There may be some club layouts which, due to size limitations, may not be able to accommodate special modules.

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Track

Kato Unitrack is the standard track for T-TRAK modules, and are spaced on the modules per the T-TRAK Standards, except the club will use the alternate 33mm spacing. Other track, such as flextrack, may be used at the discretion of the modeler with the requirement that the module(s) have Kato Unitrack at both ends. All track must be securely fastened to the module and position at the ends per the T-TRAK standard.

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Wiring

Basic module wiring will follow the method specified in the T-TRAK Standards, using standard Kato Unitrack wires and connectors, and with the two main tracks wired with blue to the track facing the outside of the module. See the next section for wiring for Digital Command Control. Other wiring for AC or DC accessories will be the responsibility of the module owner, but such additional wiring must no interfere with nor be connected in any way to the track wiring.

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DCC Wiring

The T-TRAK wiring standard is intended for DC control of trains, with trains running in opposite directions on the two tracks. This puts track power at opposite polarity on the two tracks. With Digital Command Control (DCC) track polarity should be the same on both tracks. This will be accomplished by means of a track bus that will distribute DCC power from the Booster(s) to the modules. The track bus will follow the NTRAK Recommended Practice of 12gauge stranded cable with Powerpole connectors at the ends, as defined in the document RP on NTRAK Module Wiring. This track bus will have appropriately spaced pig-tail feeders with Kato/Tamiya connectors configured to provide the correct polarity to the track feeders.

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Scenery

T-TRAK modules should be scenicked to the same extent as NTRAK modules, within the physical limitations of the module. Sky boards are optional, but recommended, for T-TRAK modules.

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References

The following are a few of the references to information about T-TRAK that is available on the Internet:

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Copyright © 2010 North Raleigh Model Railroad Club. All rights reserved.
The NRMRC is a Not-For-Profit Corporation incorporated in North Carolina.
The various logos and heralds shown here are the property of their respective organizations.

Last updated: Friday December 3, 2010

 

North Raleigh Model Railroad Club
Webmaster: John M Wallis (Email)



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