Wallerawang - Construction, September 2012
Work over winter, in between exhibitions, mainly concentrated on layout maintenance with some detailing thrown in for good measure. Speed boards and mile posts were bought from Uneek; the speed boards are only for a single speed sign so other boards for the second speed were scratchbuilt from styrene and glued onto the posts. These were painted white and yellow, had number decals applied, then were glued trackside in positions corresponding with the prototype locations.
The sockets on the jumper cables received pieces of aluminium angle to help in making them polarised, removing the reliance on visually lining them up (the plugs and and sockets are ex-PMG stock and have no in-built means of ensuring alignment or polarisation). This was trialled and found to be inadequate, so matching pieces of angle were fabricated and attached to the plugs. Where there are two jumper cables between modules, different angle shapes were used in order to avoid a jumper cable being connected to the wrong socket. (See the April 2009 update for details on the jumper cables.)
The control panel for the Down yard was updated, the schematic being replaced with one showing the new track arrangement. The schematic was designed in a CAD program and constructed in the same way as described in the June 2009 update. LEDs were inserted into the panel, an LED control circuit board was fabricated and installed, with the inputs wired into the existing diode matrix point motor control system.