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Crossings for Atlas Custom Line #4 Turnouts???

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  • Member since
    July, 2006
  • From: Central Vermont
  • 4,129 posts
Posted by cowman on Tuesday, February 12, 2019 5:46 PM

Welcome to the forums!

As Randy mentions, any Atlas track planning book I have ever seen, has a section ln the back with all sorts of combinations.  They have several options so that you can have a variety  of track spacings between parallel tracks and the needed crossings and length of spacers to give you the desired spacing.  A lot of handy ideas in one place.

Good luck,

Richard

  • Member since
    January, 2009
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Posted by RR_Mel on Tuesday, February 12, 2019 5:17 PM

That increased my minimum radius to 20” instead of the 18” I thought I had.  I feel better knowing that my yard turnouts are 20”.
 
 
 
Mel
 
 
My Model Railroad   
 
Bakersfield, California
 
I'm beginning to realize that aging is not for wimps.
 
  • Member since
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  • From: Reading, PA
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Posted by rrinker on Tuesday, February 12, 2019 5:07 PM

RR_Mel

I captured an Atlas #4 and 25° crossover from their site and worked it up on my CAD and it is 3” center to center.
 
 
By cutting them up it looks like one could get it down to 2” centers.
 
My drawing should be within about a 1/32” of an inch or so for accuracy if the pictures on the Atlas site are accurate.
 
EDIT:
 
I was surprised to find out that the Atlas #4 turnout center radius is 20”.  I never checked one until this morning.
 
 
 
Mel
 
 
My Model Railroad   
 
Bakersfield, California
 
I'm beginning to realize that aging is not for wimps.
 
 

Yeah, the Atlas #4 is really a #4.5 frog, so it's bigger radius than a true #4. 

                        --Randy

 


Modeling the Reading Railroad in the 1950's

 

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

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  • From: About 20 minutes from IRM
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Posted by CGW121 on Tuesday, February 12, 2019 1:56 PM

Amazon has several used copies for sale as of 2/12.

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Posted by RR_Mel on Tuesday, February 12, 2019 12:09 PM

I captured an Atlas #4 and 25° crossover from their site and worked it up on my CAD and it is 3” center to center.
 
 
By cutting them up it looks like one could get it down to 2” centers.
 
My drawing should be within about a 1/32” of an inch or so for accuracy if the pictures on the Atlas site are accurate.
 
EDIT:
 
I was surprised to find out that the Atlas #4 turnout center radius is 20”.  I never checked one until this morning.
 
 
 
Mel
 
 
My Model Railroad   
 
Bakersfield, California
 
I'm beginning to realize that aging is not for wimps.
 
  • Member since
    February, 2002
  • From: Reading, PA
  • 25,897 posts
Posted by rrinker on Tuesday, February 12, 2019 8:53 AM

 They've republsihed some of the plan books with different names, but the one I have that has several pages in the back showing all sorts of track arrangements possible with the Custom Line components is "Custom Line Layouts for HO Scale Railroads". Might get lucky and find a library with a copy, or else find a copy at a train show.

                                                   --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
    January, 2009
  • From: Maryland
  • 7,806 posts
Posted by ATLANTIC CENTRAL on Tuesday, February 12, 2019 6:32 AM

mbinsewi

I wasn't sure either, then when Mel posted about his cross over, last night, I figured I total missed it.  But maybe not.

For a cross over, I thought the Atlas CL's came with a short section you add on the diverging route, but after looking at their web site, I guess not.

Mike.

 

One of the important features of the Atlas Custom Line track system is that the turnouts make crossovers (single crossovers) @ 2" track centers with no spacer track and no modifications.

The 19 degree and 25 degree crossing will make double crossovers with wider track centers, but again with no spacer tracks.

Years (decades) ago Atlas published a book of track plans which also explained all their track geometry.

Sheldon (the Atlas track fan)

 

    

  • Member since
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  • From: Dearborn Station
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Posted by richhotrain on Tuesday, February 12, 2019 6:05 AM

I do agree that the terms 'crossing' and 'crossover' can be confusing.

A crossing does just that, it crosses a track without the capability for a train to enter or exit the track that it is crossing.

A crossover is a pair of turnouts that connect two parallel tracks as opposed to crossing the tracks.

Rich

Alton Junction

  • Member since
    May, 2010
  • 5,278 posts
Posted by mbinsewi on Tuesday, February 12, 2019 5:47 AM

I wasn't sure either, then when Mel posted about his cross over, last night, I figured I total missed it.  But maybe not.

For a cross over, I thought the Atlas CL's came with a short section you add on the diverging route, but after looking at their web site, I guess not.

Mike.

  • Member since
    January, 2009
  • From: Maryland
  • 7,806 posts
Posted by ATLANTIC CENTRAL on Tuesday, February 12, 2019 5:34 AM

The OP does not make it clear what he is building - a double crossover or one track diverging and crossing parrallel track?

#4 Atlas double crossover - 25 degree crossing, twice the frog angle

#4 Atlas divirging over a parrallel track - 12.5 degree crossing, same as the frog angle 

#6 Atlas double crossover - 19 degree crossing, twice the frog angle

Sheldon

    

  • Member since
    September, 2004
  • From: Dearborn Station
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Posted by richhotrain on Tuesday, February 12, 2019 5:01 AM

The correct crossing for Atlas Custom Line #4 turnouts is an Atlas 12.5 degree crossing.

Take a look at this old thread for a more complete discussion.

http://cs.trains.com/mrr/f/11/t/196606.aspx

 

Rich

Alton Junction

  • Member since
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  • From: Bradford, Ontario
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Posted by hon30critter on Tuesday, February 12, 2019 12:00 AM

Hi Jon!

Welcome to the forums!    Welcome

I'm just curious about what you meant by this:

JON FROST
NS in HO in 11" x 17"

Did you mean 11' x 17'?

Cheers!!

Dave

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    May, 2010
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Posted by mbinsewi on Monday, February 11, 2019 9:39 PM

OK, like I said, I'm missing something, my ability to THINK! Laugh  Dunce

Thanks Mel.

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Posted by RR_Mel on Monday, February 11, 2019 9:31 PM

The Atlas 25° crossing will work with Atlas #4 turnouts to make a double crossover.  I do not know the track spacing.
 
I used a 19° crossing to make my #6 double crossover.  I had to do some serious cutting on the turnouts and the crossover to end up with 2” center to center double track mainline.  The standard spacing for manufactured double crossovers is 2”.  I started out using a code 83 Shinohara Double Crossover and it wouldn’t pass my Rivarossi Articulateds with non RP25 wheel flanges.  None of the commercially made code 83 turnouts would pass the large flange wheels without a problem so I made my own using Atlas turnouts and crossover.
 

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

 

 
 
 
Mel
 
 
My Model Railroad   
 
Bakersfield, California
 
I'm beginning to realize that aging is not for wimps.
 
  • Member since
    May, 2010
  • 5,278 posts
Posted by mbinsewi on Monday, February 11, 2019 8:58 PM

JON FROST
I need to know which size crossings I should use for #4 Atlas Custom Line turnouts and what would the track spacing look like?

Welcome Jon,

I'm not sure what you mean by crossings?  I'm sure I'm missing something, could you elaborate?

Do mean one track crossing another? as in a diamond?

Or a road crossing?

Mike.

  • Member since
    November, 2013
  • 3 posts
Crossings for Atlas Custom Line #4 Turnouts???
Posted by JON FROST on Saturday, February 09, 2019 6:44 PM

Greetings:

First post on this forum. I need to know which size crossings I should use for #4 Atlas Custom Line turnouts and what would the track spacing look like?

I am planning an extension to my current shelf layout and any info would be appreciated.

Jon Frost

NS in HO in 11" x 17" - In Western MA

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