Wallerawang - Construction, April 2009
After nearly three years since the decision to model the location of Wallerawang was made, all track on the layout has been laid, with the last track pin being nailed in the storage yard.
The Tortoise point motors have been installed for all the points in the storage yard. The point motor circuit boards that will drive these motors are currently being assembled. The diode matrix systems that will control each point motor have been designed and finalised, and the boards are being constructed. The 12-volt DC and 17-volt DC power supply circuits are currently in the PC board design phase. All the jumper cables, each containing ten pairs of figure-8 wire, have been soldered and tested.
Extensions were added to the alumimium folding legs, raising the height of the modules by 85mm (just over 3 inches). The overall height from the floor to the tops of the rails is 1140 millimetres (a fraction under 3 feet 9 inches). This extra height gives the layout a more realistic look, as the viewer is not looking down as much to view the scene in front of them, but rather looking at and through the scene.
Lighting for the layout is to be provided by daylight flourescent tubes in painted wooden valences, held in place by square steel tube brackets. A prototype lighting valence was constructed out of plywood and test fitted to a temporarily mounted backdrop on a module. This mock-up showed that the layout will be adequately illuminated, with only one minor change required during construction. The lighting valences are due to be built within the next month.