automatic reverse

Good Morning, My father and I are working on a layout together and we have some questions about a reverse loop on the layout. The reverse loop is highlighted in green on the attached photo. We are both novices in the hobby and appreciate any and all the help you guys can provide. Since the...

what automatic reversing loop machine do you reccomned?? Also where would you place them in this? http://www.windriver-rr.org/trackplan.html i use the digitrax zephyr system if that changes anything...