I'm pretty late to this party, but my name is John Lauter, and I built the layout in Dick's basement along with my partner, John Wetzel. It was a big challenge, and I'm fairly proud of how it turned out. We built a lot of scratch-built components on that layout. One feature I was really proud of was a set of two inserts that completed the tracks in the gap up the rear center of the layout, towards the control console. Dick wanted under certain circumstances to have a "bridge" sort of thing lock in and complete the tracks to allow for reversing direction on the outside track. I devised a system that had a wood frame, then the ballast substitute we manufactured for that layout, then the track. I opened up the ends of the track similar to the ends of a Bascule bridge's track, so that it would lay over a pin in the corresponding rail of the mating track. I made all this, then drilled gang holes through the plywood deck of the insert bridge, into the main table decking then installed 4 banana plugs like a volt-ohm meter has, these provide two functions. They positively align the insert piece the same way each time, so that the tracks line up perfectly, and they are used as electrical connectors to a) send power to the track on the bridge and b) to complete a lock out circuit that prevents the switches from being thrown such that the train could plummet off of the table! When the bridge insert is out (which is most the time) the switches cannot be activated because the normally closed contacts of a relay are hooked to the switch to lock the "right way" turn in that position. If you try to change the direction manually, at the console, or through the CAB-1 controller it will buzz a bit, but go back to the locked position, which is the safe "correct" position. When the bridge/insert is installed the relay is energized, the contacts open up on the relay and the switch can be operated in either direction. When the bridge is removed, braking the power to the relay it goes back to the "normally closed" position of the relay and the switches will automatically
switch themselves back to the "safe" position. I can answer any questions you may have about the layout. Derrick is doing the train community a great service with these interviews. I had the honor of being interviewed for his Madison Hardware book re: the NYC neon sign which I restored in 2000.