A Simple On18 Loop
This may be a case of the name of a model railroad being longer than the line itself, but I had to call it something, right? The Calico Canyon Unit of the HT&NMRy is a simple loop of 9mm gauge track about a foot below the Thunder Mesa mainline in Calico Canyon. It emerges from a mine tunnel, crosses Calico Creek on a high trestle, then passes behind a waterfall before ducking back into another tunnel. Round and round it goes, bringing a little more kinetic energy to the canyon scene. The circle is 11" radius and uses Peco HOn3o track for the visible areas, and Atlas N scale snap track for the hidden parts of the loop. Power comes from a well used Kato DC power pack under the layout.
The idea began with earlier plans for Calico Mountain and evolved into a loop inside the canyon when I started roughing in the scenery there. I started by creating a circular sub-roadbed from pink extruded polystyrene foam, and then building the canyon walls up with more foam around it. Midwest HO cork roadbed was glued to the foam with yellow carpenter's glue and allowed to dry overnight before track laying began. Using sectional track in the hidden areas allowed me to leave some rail joints un-soldiered, always a good idea since nickle-silver rail shrinks and expands with changes in temperature.
Calico Creek will cascade down the canyon in a series of dramatic falls, over and under the On18 and On30 tracks. Up top on the TMMC mainline, a new mine headframe and hoist house will be built near the backdrop, giving the illusion that the On18 tracks below are part of a large mine complex.
Progress on this little loop is tied in with progress on the larger scenes of Calico Canyon and Calico Mountain. The next big jobs will be building a mine complex trackside and all of those bridges across the canyon. Then there's the canyon scenery itself to finish and the cascades and falls of Calico Creek. In the meantime, here's a quick video of the On18 loop in action. Stay tuned, Amigos!