Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Single Crossover wiring for reversing

6000 views
11 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    March 2018
  • 2 posts
Single Crossover wiring for reversing
Posted by RJHJR on Sunday, March 11, 2018 12:02 PM

I have been working on my new layout for about 3 years and decided I wanted a single crossover so that I can reverse the direction of the trains.  I purchased (2) #6 walthers turnouts and installed them with a couple switch motors.  I did some you tube looking and also purchased a couple AR1 for reversing.  

My problem is that the reversing has to start at the first turnout and I can not determine where the AR1 needs to be located and also how it needs to be wired.  Is there anyone that has done this same application with success?

 

 

PED
  • Member since
    April 2016
  • 571 posts
Posted by PED on Monday, March 12, 2018 7:39 PM

Lots of posible combination to deal with. Hard to help without an image.  

Paul D

N scale Washita and Santa Fe Railroad
Southern Oklahoma circa late 70's

  • Member since
    July 2006
  • From: Sebring FL
  • 842 posts
Posted by floridaflyer on Monday, March 12, 2018 7:50 PM

As PED said, without a diagram we are lost. With a diagram there are any number of guys on the board that can help you. 

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Monday, March 12, 2018 8:00 PM

If your layout is a dogbone shape with the crossover somewhere along the shank of the bone, the easiest thing to do ir isnulate the loops at each end and power each loop via an AR-1. Then you can have as many crossovers going whichever way you want along the shank portion and nott have to worry about it.

                                   --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    July 2006
  • From: North Dakota
  • 9,592 posts
Posted by BroadwayLion on Wednesday, March 14, 2018 10:43 AM

If you builded in interlocking tower ewe wood know.

Ewe have switch points protected by signals, in the normal position the train continues forward into the loop.

Guess what, the signal facing the train when it went around the loop is RED, and will stay red until you reverse the switch.

LION would gap all of the track between each switch point althoug you could choke that up a bit depending on your layout.

In world of LION that dead block would receive power from the mane lion depending on the orientation of the switch. With AR, lion knows knot, but if him was to use such a contrivance, him would locate it on the loop.

LION does knot know why him would buy such a costly contrivance when the interlocking tower is purrfectly capable of reversing the power on its own account.

Of course maybe you do not want your train to stop at the red light (which *IS* prototypical, of course) but then him would knot know what wierd elscktronik boxes would do. The destructions that came with the device ought to explain the installation thereof.

Now, where is that wildebeeste.

ROAR

The Route of the Broadway Lion The Largest Subway Layout in North Dakota.

Here there be cats.                                LIONS with CAMERAS

  • Member since
    March 2018
  • 2 posts
Posted by RJHJR on Sunday, November 11, 2018 6:50 PM

i am trying to cross over to a track that is running the opposite way.  Can not figure out how to get the AR to work going through a switch. 

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Monday, November 12, 2018 9:31 AM

 If you are just switchign from oen track to another, that is not a reverse loop, just because one main is the east main and one is the west main. It's only a reverse loop situation if at one or both ends, the two mains loop arouns and connect, the classic dog bone shape. If they do NOT connect, the correct solution is to wire both mains the same way, so that the track rail towards the backdrop on both lines is the same side of the bus and the rail towards the aisle on both lines is the other side of the bus. Then thre is no polarity conflict with a crossover betwen them. If the overall shape is a dog bone, then you isolate the loops at each end and connect the autoreverses to them. You can then have as many crossovers as you want int he shank of the bone with no issues.

                                                --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    December 2015
  • From: Shenandoah Valley
  • 9,094 posts
Posted by BigDaddy on Monday, November 12, 2018 9:49 AM

The OP is asking us to guess.

I'll play.

  • It this a DCC layout?
  • Does it look like this?

If yes and yes, does your longest train fit in the blue zone, because that is where you would attach your AR1

 

 

Henry

COB Potomac & Northern

Shenandoah Valley

  • Member since
    August 2003
  • From: Collinwood, Ohio, USA
  • 16,367 posts
Posted by gmpullman on Monday, November 12, 2018 10:27 AM

BigDaddy
The OP is asking us to guess.

He said it is a "dog bone" with a crossover. [edit] My mistake, Randy said that. But I'm assuming  Embarrassed that's what the OP is getting at?

Scroll down about midway here, 

http://www.wiringfordcc.com/track_2.htm

 You have to weed out what doesn't pertain to your situation but there is an example of what Randy is saying, the AR-1 feeding each loop and direct wiring in the "double track" area where the loop is pinched at the crossover.

 DCC_Dogbone by Edmund, on Flickr

Alan Gartner Diagram

Alan Gartner shows a double crossover but the wiring would be the same.

Good Luck, Ed

  • Member since
    July 2006
  • From: Sebring FL
  • 842 posts
Posted by floridaflyer on Monday, November 12, 2018 10:51 AM

OP said he is doing this with 2 #6 turnouts, thus it will be a reversing section in one direction only. One AR-1 should do the trick. Having said that OP would be wise to look at Ed's drawing and consider giving himself the flexability of reversing in both directions.

  • Member since
    December 2015
  • From: Shenandoah Valley
  • 9,094 posts
Posted by BigDaddy on Monday, November 12, 2018 11:24 AM

The OP is half way there.  This is how Mel did his double crossover with 4 #6 turnouts

http://melvineperry.blogspot.com/2012/06/june-25-2012-my-double-crossover.html

Henry

COB Potomac & Northern

Shenandoah Valley

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Tuesday, November 13, 2018 5:01 AM

As others have stated, without a track diagram it is difficult to give you a definitive answer. And, as Randy has pointed out, you may not even have a reversing section. Or, if you have a dogbone configuration with a single crossover in the middle, it may be best to treat each end loop as a reversing section, requiring two auto-reversers instead of one.

That said, you state that the single crossover on your layout sets up a reversing section at the entry to the crossover. Here are two ways to deal with such a reversing section, although they are not the only ways.

The key is to isolate the reversing section from the non-reversing portion of your layout. To accomplish this, you need to place gaps in the track at various points. In the first diagram above, you would need three pairs of gaps (A, B, C) to completely isolate the reversing section inside the gaps. If you wish to include the entire crossover as part of the reversing section, you would need four pairs of gaps (A, B, C, D).

As others have stated, it is best to broaden the reversing section so that it is longer than the longest train passing through it. So, that might require extending the gaps further down the mainline tracks.

Once the reversing section is isolated, any and all feeders inside the reversing section should be wired to the output side of the auto-reverser. The wiring from the input side of the auto-reverser should be connected to the main bus.

Rich

Alton Junction

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!