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Opps I just saw it. Option B would only work going around the wye in one direction.Scott
Application Example 2: Reversing Triangle or WyeAR1 connected to reversing triangleWhereas reversing loops are rare on full-sized railways, triangular junctions, or wyes are quite common. The AR1 can also be used for these. The triangle may connect to a separate line (as in full-sized practice) or may simply be a convenient spur siding.A wye was often used to turn a locomotive where a turntable was not available.The track feed connects to the AR1 input just as in the reversing loop case. The AR1 output feeds the spur. The two double gaps on the right (before the turnout) are essential to isolate the different power phases.It is important to note that it is not possible to make any other feed connections to the spur other than via the AR1 unit.The double gap on the main line marked with an asterisk () is required if the turnout has a live frog.