Polarity/Current Flow G Scale Track

[eje5276]

Please help. I would like to lay long single track & have a turnaround at each end. This would be a lot lower in cost than running down one track & back up the other. Anyhow, if a "circle of track with a switch", was at each end of the single track. Would there be a current/polarity problem when an engine/train went around the circle , through the switch and reentered the single track? Is this correct? Will it work OK, not causing current/polarityproblems? Thanks much.

Ed

[Mike]

Ed- You would have a polarity problem unless you electrically isolate the loop  (usually at the track switch/turnout) and wire the loop and mainline with a polarity reversing switch. The kalmnach wiring book has information on reverse loop wiring... or you can just google "reverse loopp wiring".- Mike

[Mike]

Try this: <http://www.girr.org/girr/tips/tips3/reversing_tips.html#auto>. It even has a circuit for an automatic reverser. Mike

[eje5276]

Mike,

Thanks much, will check out your suggestions.

Ed

[jsmvmd]

Dear Mike,

This helped me, too.

Best Wishes,

Jack