selector wrote:No they don't, Robert, not if you have a properly configured crossing. If you are getting a short you have something else amiss...maybe crossed wires.
Or we have different pictures in our heads when we say figure 8.
Jeff But it's a dry heat!
Robert,
No. A figure 8 is NOT a reversing loop. A reversing loop is where a track circles around and comes back on itself via a turnout: (See left side of diagram)
Click picture to enlarge
This means that a train will go down the track in one direction and return on the SAME track going in the opposite direction. If your layout is an over 'n under figure 8, it's not a reversing loop. However, if you had to "cut your track" in order to get it to work, then it does sound like a reversing loop.
In DCC, you'll still need to isolate the rails. However, there are auto-reversing loop modules that will automatically sense and change the polarity of your track for you. Lot nicer than having to remember to throw a slide switch.
Tom
https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.