HO-scale Division - Construction Photos

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May 13, 2004

Work continued on the spline roadbed. Members first glue up one layer of masonite spline to homosote blocks. These are temporarily clamped in place. Then, a pneumatic stapler is used to shoot a 3/4" brad through the masonite into the homosote. The clamps can then be removed. This is repeated until three layers of masonite are glued to each side of the homosote center.

Once the glue has completely dried and the basic spline is complete, members use a belt sander to smooth the top of the spline. Risers attached to the benchwork support the spline roadbed. The precise track elevation can be achieved by careful adjustment of the risers. Once the proper grade is achieved, members add the flex-track and turnouts. Track nails are used to attach the track to the homosote core of the spline roadbed. Once scenery is begun, track in visible areas will be ballasted, after which the track nails can be removed.

In large areas, such as the staging yard, the roadbed consists of homosote on a plywood subroadbed. All of the roadbed is painted before any track is laid. Past experience shows that moisture causes the homosote to swell. Painting the roadbed helps prevent moisture from entering the homosote.

The staging yard is substantially complete. Switch panels have been installed for controlling yard turnouts. These will be wired to turnout motors which have not yet been installed. Members use a specially-built flat car with bubble levels to ensure that the track is level. Minor changes can be made by adjusting the risers.

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