开云体育

Stumped:

I have built a DCCsystem and I cannot figure out how to wire a
complicated dogbone.

My two track mainline enters a double crossover that becomes a loop
coming back into the double crossover. I am using Lenz equipment
throughout.

My crossover and track in the loop is Shinohara purchased through
Walthers.

Help on this would be greatly appreciated

Doug Edwards

Worst case - You want to run more than one train at a time and they may overlap at the main tracks of the double crossover.
Need 2 A-R units. Wire the whole crossover section to be fixed track polarity right from the booster. Use insulated rail joiners at all 8 rails. Wire the left and right halves of the rest of the layout as two separate reversing sections, each with its own Auto-Reverser. If you throw all 4 throwbars of the Walthers double crossover to be the same position at the same time there will be no short circuits caused by steel wheels. Fairly easy to do w/ 4 Tortoise machines all wired to the same control switch.

Can also be done by moving the insulating rail gaps and A-R track sections away from the double crossover, out toward the actual end loops. Still requires 2 A-R track sections, but you COULD get by with using only 1 A-R unit if you can guarantee that only 1 train at a time will be rolling through the reversing tracks at any given moment. The advantage is that much of the double or single mainline track can be constant polarity, and you may get by with purchasing only 1 A-R unit. For trouble free operation make sure the reversing track sections you do end up with are always longer than the train.
DonV