About Us

Home

Module Construction

Procedures and Reliability

Current Information

Join Us

Contact Us

4D HO Mod SIG

Description of Group

The 4th Division HO Moduler Group is part of the National Model Railroad Association, Pacific Northwest Division, 4th Division, but we call ourselves the 4D HO for short. Officially we are the HO Mod SIG or HO Modular Special Interest Group.

We are a bunch of HO model train enthusiasts. The private indivudals own about fifty modules total. At least ten of our member's modules have earned a golden spike award. These modules range from mountains to yards, stations to industries, prototypical to freelanced. The group owns eight corners, a bridge, a wye, and staging yards. We run anything from the modern era, including diesel and "juice-jacks," to the steam era.  DCC-equipped locomotives and properly weighted rolling stock equipped with metal wheels and knuckle couplers are standard.

Modular Concept

A module is a portable section of table type structure which is but one part of a large group of like tables which when all assembled together form a large and fully operating model railroad. They are built by individuals as part of a home layout or specifically for use interfacing with others in a large setup. All are built to a set of standards that allow each unit to interface exactly with other units anywhere in the overall system. A module may be a single table or a group of tables which must be capable of interface at each end but may deviate between these ends so long as the type of operation is not compromised or restricted. By being portable, they may be disassembled for transporting to conventions or public displays.

Modular History Prologue

Modular History Timeline

Mission Statement

Promote participation, sharing, railroad history, and the NMRA/4 Div.
Entertain and inform people about the hobby.
Help charities, community organizations, and other railroad groups.

Modular Concept

NMRA membership
Membership in the National Model Railroad Association is required.

NTrak
It is a different scale, but Ntrack popularized the modular concept.

Last updated:

July 21, 2007