07-14-2013, 06:16 PM
Mike Kieran Wrote:Just be careful of the switch lead that spans the door. I would scenic it as if it was in a cut so that you can have scenery one inch deep on each side of the track and you have safeguards from your rolling stock proving the theory of gravity. I would also not power the last 9 inches of the lead so that your engine stops before the end of track.
Mike - As you well know, with DC it's easy to de-power a preferred direction with diodes. How would I do this with DCC? The QBD solution would be to isolate one rail on the last nine inches or so of the removable lead and turn it on or off with a SPST switch, but that would not be automatically foolproof. I've looked elsewhere on Big Blue for a more elegant solution, but no soap thus far. Guess I'll keep looking.
I'm preparing to do a mock-up with prefab track; how could anything possibly go wrong?