Large Scale Central

Reverse loop or wye

General Discussion
#1

Question about this. Why can’t I use a pair of DPDT switches to do this outdoors just like I remember from my indoor N scale days (many moons ago). BTW, DC track power. I realize the switches will have to be ‘enclosed’ some how as well.

#2

Randy; what does BUW mean?? I would recommend a loop as it does not require any turn outs, if R/C you will not need any special electronics like you would need for track power. And even that, is not too hard to do. I use spring switchs on mine and don’t need to worry about hand throws. It is all depends on how much room you have to work with. I would not us less than 6 foot radius, anything looks tinny.

Paul

#3

Randy:

With track power, you would wire it the same as you would for an indoor HO or N scale layout. For a look you will need to isolate the loop section at the gaps just after the turnout. DPDT wired to mainline and one to the loop.

For a WYE, select the longest leg of the WYE and isolate it the same as the loop - both rails just past the rail joiners. There are several thoughts on which legs to isolate depending on the configuration of the WYE. Again - two DPDT switches are required.

#4

Thanks Steve…I was sure it would work. Why would it take any of those ‘pricey’ reverse loop electronic thing-a-ma-jig units to make it work?

#5

You just have to remember to throw the DPDT switch, is all. That’s the advantage of the fancy electronics–they throw the switch automatically so you aren’t tied to a control panel having to consantly be there to throw the switch back and forth. If you’re using wireless throttles, that’s something to consider. “Way back when” I was still running track power, we had a central controller and a DPDT switch, and I still spent enough time wandering with the train to where I forgot to throw the switch…

Later,

K

#6

I just happen to keep a wiring diagram of my Wye on-line. It is wired as Steve suggests. Once caveat on my drawing; the Frog Power Option shown is incorrect. I never updated the drawing. On a Wye, the nice part is that you plan to stop and reverse so there is less oddity to the operation. Enter the Wye; Stop; Flip the power switch, Throttle up and exit the Wye. No need to change direction on your controller. I pick up my power for the tail from the track leading into it. No separate power run needed.

(http://lsc.cvsry.com/Wye_Diagram-800.JPG)

(http://lsc.cvsry.com/Wye_Polarity.jpg)

I mounted my DPDT in an outdoor electrical box on a blank faceplate. The electrical box stands on a piece of PVC conduit that goes into a cement base.