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 Posted - December 09 2014 : 02:22:20 AM
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I was excited to find this double crossover on ebay. But looking at the photos I have noticed that the X piece has been modified at least in one area. One rail is cut shorter than the other side. The crossover looks bulky in the pics and doesn't fit well together...
I would love to have a double crossover and would like to know the Atlas code 100 silver track part numbers to buy and make one of these that fit correctly... I think Glenn (gmoney) has mentioned this assembly to me once before... Opinions or info is welcome...
http://www.ebay.com/itm/121500997567?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649
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Posted - December 09 2014 : 04:34:44 AM
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Looks like he's used four snap-switches, which are made with a slightly sharper than #4 radius to work with sectional track, and they don't quite align with the crossover.
I sold a Shinohara or similar brand all one piece double crossover like that at a show last month for $25. I bought it at the same show a year before for like $10. Deals are out there if you look.
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Posted - December 09 2014 : 09:01:41 AM
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quote:I would love to have a double crossover and would like to know the Atlas code 100 silver track part numbers to buy and make one of these that fit correctly.
Originally posted by walt - December 09 2014 : 02:22:20 AM
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I don't have part numbers, but here are a couple of configurations from the Atlas Custom Line Layouts book by John Armstrong (copyright 1957):
Carpe Manana!
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Posted - December 09 2014 : 4:43:07 PM
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Part numbers for Atlas code 100 nickel silver track:
281 - #4 Custom Line turnout-left
282 - #4 Custom Line turnout-right
283 - #6 Custom Line turnout-left
284 - #6 Custom Line turnout-right
171 - 19 degree crossing
172 - 25 degree crossing
847 - track assortment
You will need the track assortment to get the 2" or 2.5" straight sections, unless you can find them loose at a train show.
I agree with lvrr325, those are snap-switches with 20 degrees of curvature; you would need a 40 degree crossing to make that work and Atlas doesn't make such a beast (I don't know if anybody does).
Follow the track diagrams posted by Shaggy to determine which components you actually need and how much space they will take up on your layout. Also keep in mind that a crossover, single or double, creates a reverse or "S" curve and can potentially cause derailments with long cars and body mounted couplers. If you are using truck mounted couplers exclusively, the geometry of the crossover won't cause any derailments in the forward direction. However, reverse moves with truck mounted couplers are sketchy in just about any situation.
Glenn
I was thinking of the immortal words of Socrates, who said, "... I drank what?"
Edited by - gmoney on December 09 2014 5:07:58 PM
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Posted - December 09 2014 : 6:14:03 PM
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Thank You, Guys... I will write this info down this time... 
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Posted - December 09 2014 : 6:44:42 PM
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quote:Thank You, Guys... I will write this info down this time...
Originally posted by walt - December 09 2014 : 6:14:03 PM
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w:
Another thing you may want to write down, because you may run across another mfr's switches at some point, is that Atlas #4 switches are actually #4 1/2. I think Atlas did this so they would be compatible with 22 inch radius (that's the closure rail radius of a #4).
It can be a bit of a puzzle when you pick up another manufacturer's actual #4 (like, I think, Casadio), and find it doesn't fit. :)
Edited by - Autobus Prime on December 09 2014 6:45:45 PM
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Posted - December 09 2014 : 7:13:56 PM
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Warning, Will Robinson: The book I copied from was about Atlas Custom Line track. Seeing the discussion of the 25 degree vs. 40 degree crossing made me wonder if the geometry of a #4 Snap Track switch is the same as a #4 Custom Line switch, and I think that it is not. 
I looked at a Snap Track book and a 180 degree curve including the curved portions of two #4 switches had the two switches, two 1/3 18" radius tracks and 4 full 18" radius tracks. That does leave the Snap Track switches at 20 degrees each.
The Custom Line book had 2 #4 switches, 2 1/3 18" radius sections, 4 full 18" radius sections and one 1/2 18" radius section, implying that the Custom Line #4 switch is 12.5 degrees of curvature.
I hope I didn't gum up the works too much with the original confusion.
Carpe Manana!
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Posted - December 09 2014 : 9:37:46 PM
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| It's all good Shaggy... Get me close and I can figure it out!
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Posted - December 09 2014 : 11:36:25 PM
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Walt, I did a quick search online for the prices of new Atlas track from Atlasrr.com and the price of a new Shinohara prefab double crossover from Walthers, and price-wise, the prefab is significantly cheaper. Those are online prices though, and I don't know what you might pay at your LHS if the track is available. Also, the prefab is on 2-inch centers and the individual Atlas components will create a double crossover on 3-inch centers. Just some things to consider, and I hope I didn't muddy the waters even more!
Glenn
I was thinking of the immortal words of Socrates, who said, "... I drank what?"
Edited by - gmoney on December 10 2014 12:07:54 AM
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Posted - December 09 2014 : 11:46:36 PM
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Glenn, I like the 2 inch center better than the 3.. This allows me room for two side tracks instead of one.... I'm gonna look the prefab up.. I rather buy one that's ready to use... I think the $70 price tag is fair... Thank You, Glenn ...
Edited by - walt on December 10 2014 12:07:33 AM
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Posted - December 11 2014 : 8:02:41 PM
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Double crossover #6 is the one I built for my layout. So my Berkshires could handle it.
I used atlas code 83 to match my truetrack.
Works great.
It can turn your double oval into a twice around.
It can also be part of a timing game with two trains,,inside to outside and out side to inside. Keep a Close Eye on things and be ready to turn power off in a heartbeat, trust me! unless-- This can also bring out the Gomez Addams in you too !
Why else does a grown man play with trains ?
Edited by - jbsmith966 on December 11 2014 8:04:29 PM
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Posted - November 16 2015 : 6:56:41 PM
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Today I bought a new Shinohara code 100 NS double crossover. I think this will be a neat addition to my layout...
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