The lift out board - number 19 - has now been fully wired. Power to board 19 is fed via four brass strips on the board which, when the board is in position, make contact with 4 brass sprung plungers obtained from old light bulb connectors.
To enable power to still feed Board 20 when 19 is lifted out power cables have been run down the support legs, across the floor and up the support leg of board 20.
To avoid the potential disaster of engines and stock being accidentally driven into the abyss a dead section of track exists on each side of the gap, on up and down lines, so that power is removed when the lift out board is removed. These four sections of track are controlled by micro-switches. The four on the vertical faces - board 18 and 20 - switch on power when board 19 is in position. The four on the horizontal surface switch on power when the wooden barrier pieces are in position enabling full use of the track when board 19 is out.
Lift out board 19 - pre track fitting photo
Inter board cables
Board 18 connections
Board 18 with barrier in place.
Board 20 without and with barrier.