Thank you for everyone’s ideas on this I appreciate it!!! I think i will go with reversing the spur going to the yard, that spur will have the dock area and the yard, i would like to power district them both separate, so I guess my option would be to setup to reverse units one for the leg of the spur and dock area and than gap between dock and yard and put the yard on another unit. I see dcc specialties has a reverse unit that does some sort of double reverse unit called the psx-ar ive used them but not ina double reverse loop scenario. Here’s more on that: not sure if I would even need this but it would be back to back reverse units.
If you gap the wye to isolate the one leg leading to the yard and dock area, that creates a single reversing section, not a double reversing section. So, I am not certain that you would want to set up the PSX-AR in Double Reverse Mode.
Since the PSX-AR is also a circuit breaker, if you want to separately protect the yard and the dock area, it seems to me that it would make more sense to add a separate PSX circuit breaker unit for either the yard or the dock area.
If it were me, I would arrange the lead track into the yard/dock complex as the reversing section, making it long enough to accommodate the longest train. That way, the track work beyond the reversing section would be unaffected by any reverse polarity situation. Then, add a PSX unit for circuit breaker protection at the head of either the yard or the dock area.
here is a better pic, if I want to keep the yard and dock area under seperate power disricts, and i just use dock area under rervese and have a train enter reverse section from yard and also one from the wye would that not create a short? thats why i thought add another reverse unit in the yard area as well as the orginal plan of a reverse unit in the wye.
Thanks again for everyone’s input, Yes that section should be long enough to hold a train, I just wanted to see if there was a way to protect the accident of another train overshooting the gap on the other side and creating a short situation. I know that would mean they would be on a Collison course, but sometimes operators can overrun a switch and need to backup thus a short would be triggered, I guess we have control over that, but the fact that a spot actually exists that could cause a short, I was wondering if there was a way around it, that’s why I thought to putting another reverse unit in the yard area, the issue with that is, if a train enters the wye reverse and the same time a train enters from the yard, what occurs do we end up with 2 reverse sections that keep switching back and forth. I also read something about the psx ar having the ability to use a double reverse I don’t know what that feature is all about and or if it could be applied here. The end all may very well be that I have to gap in those areas you mentioned and just manually control who goes into that section, which was one of the original plans.
I am not familiar with the operation of the PSX-AR Double Reverse Mode. From the commentary provided by DCC Specialities, it seems to suggest that it would work for your proposed setup, but I just cannot say for certain. I also have to wonder how you would provide separate circuit breaker protection for the dock area and the yard, as you wish to do.
I understand what you are trying to do. If a train coming from from the east takes the divergent route from Point C to Point B, it will trip the PSX-AR and reverse the polarity. If another train is approaching Point B as it exits the yard, a head-on collision will occur unless the train facing it takes the divergent route into the dock area.
What I would do is to treat the entire dock area and yard as part of one reversing section. The turnout serving as the entry to the dock area could be power routing such as Peco. You could set up a dead section of track so that the train exiting the yard would stop for lack of power if the dock entry turnout is thrown divergent. That would prevent a collision. On the divergent end of the dock entry turnout, you could gap the rails and add a PSX circuit breaker so that the dock area and yard each would each have separate circuit breaker protection.
There is no rule that says the tail of the wye has to be the reversing section. The exposure is that you would have a locomotive entering or leaving the reverse section from both ends at the same time. Just pick a train length section on whichever of the 3 legs of the wye where that would be least likely to happen and control that with the PSX-AR.
BTW, your reverse section 2 should be a standard power district, not a reverse section.
I have a similar wye only mine is double track around both legs of the wye off the mainline. Do I need two (2) AR1 reversers or can I use just one (1)?
