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Reversing Loop With Automatic Switch Control

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  • Member since
    July, 2013
  • 88 posts
Reversing Loop With Automatic Switch Control
Posted by starman on Friday, May 05, 2017 1:37 PM
I am using a Digitrax system.  I have a reversing loop on one end of a main line.  There are times when I would like for my train to run continuously on this main line without me having to throw the switch manually.  Who make a reliable device that will control my reversing loop and switch?  Thanks.
 

 

Jack
  • Member since
    December, 2004
  • From: Bedford, MA, USA
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Posted by MisterBeasley on Friday, May 05, 2017 1:43 PM

The PSX-AR from DCC Specialties will do this.  I don't have one, so I can't comment on its performance.  I've had very good results with other DCC Specialties products.

They make one model for stall-motor turnout machines (Tortoise) and another for twin-coils (Atlas or Peco.)

It takes an iron man to play with a toy iron horse. 

  • Member since
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  • From: 10,578’ (3,224 m)
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Posted by jjdamnit on Friday, May 05, 2017 1:57 PM

Hello all,

I use an MRC AD520 Auto Reverse Module.

Don't let the M.S.R.P. scare you. I found them at Model Train Stuff at a much cheaper price.

Works well for me.

Hope this helps.

"Uhh...I didn’t know it was 'impossible' I just made it work...sorry"

  • Member since
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  • From: Bedford, MA, USA
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Posted by MisterBeasley on Friday, May 05, 2017 2:08 PM

A couple of things I've learned from reading about these:

Most modelers make their reverse loops as long as possible to allow for longer trains, both physically and electrically.  If you put the gaps right at the ends of the turnout, the returning train may not have enough time for a Tortoise to throw the points, so back those gaps off a foot or so if you can.

When turning off the layout, the points will move to a pre-set position when it's powered back on.  There are probably ways around this, but if you happen to leave a train over the points, the new position might not be the one you want.

It takes an iron man to play with a toy iron horse. 

  • Member since
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  • From: Northern CA Bay Area
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Posted by cuyama on Friday, May 05, 2017 5:08 PM

jjdamnit
I use an MRC AD520 Auto Reverse Module.

That unit doesn't automatically throw the switch points -- which is what the Original Poster wishes to do. It only changes polarity.

  • Member since
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  • 88 posts
Posted by starman on Saturday, May 06, 2017 7:27 AM

Thank you all for your replies.  I am going to look into the PSX-AR from DCC Specialties.  

Jack

  • Member since
    September, 2004
  • From: Dearborn Station
  • 15,820 posts
Posted by richhotrain on Saturday, May 06, 2017 7:48 AM

starman

Thank you all for your replies.  I am going to look into the PSX-AR from DCC Specialties.  

Jack

 

Jack, as you may know, the PSX-AR alone won't do what you want. It will reverse polarities inside the reverse loop, but it won't automatically throw the switch. To do that, you need to wire a turnout switch machine such as a Tortoise to the PSX-AR. You may find this thread helpful.

http://cs.trains.com/mrr/f/744/p/248831/2776020.aspx

Rich

Alton Junction

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Posted by starman on Saturday, May 06, 2017 8:02 AM

MisterBeasley

The PSX-AR from DCC Specialties will do this.  I don't have one, so I can't comment on its performance.  I've had very good results with other DCC Specialties products.

They make one model for stall-motor turnout machines (Tortoise) and another for twin-coils (Atlas or Peco.)

 

I have looked at PSX-AR controllers on line and what DCC Specialist sell is a little confusing to me.  Exactly what do need to order to control the reversing loop and my turnout?  What switch motor, in your opinion, is the best to work with the PSX-AR?  Finally, what is a ballpark price for what I need to do the job?

Thanks,
Jack
 

 

  • Member since
    February, 2017
  • 63 posts
Posted by NYBW-John on Saturday, May 06, 2017 8:43 AM

If it is a multi-track loop with turnouts on each end of the loop there is a very simple solution. As long as trains will always go through the loop in the same direction, there is no need to even have a switch machine on the exit side. The train will align the points as it is leaving the loop. This works if it is a double track mainline going into the loop. If it is a single track main and the train will pass though the same turnout entering and exiting the loop, then of course it will need to be thrown while the train is in the loop.

  • Member since
    September, 2004
  • From: Dearborn Station
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Posted by richhotrain on Saturday, May 06, 2017 8:46 AM

starman

 have looked at PSX-AR controllers on line and what DCC Specialist sell is a little confusing to me.  Exactly what do need to order to control the reversing loop and my turnout?  What switch motor, in your opinion, is the best to work with the PSX-AR?  Finally, what is a ballpark price for what I need to do the job?

Thed PSX-AR sells for just under $55, and a Circuitron Tortoise can be had for $15.

Rich

Alton Junction

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