[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
Fast Tracks • View topic - Am I dreaming

Fast Tracks

Model Railroading Discussion Forums

Return To The Fast Tracks Website

The Fast Tracks discussion forums have been closed. Click Here for more information.

It is currently Fri Oct 30, 2020 10:07 pm

All times are UTC - 5 hours [ DST ]




Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 12 posts ] 
Author Message
 Post subject: Am I dreaming
PostPosted: Tue May 11, 2010 8:40 pm 
Offline

Joined: Tue May 11, 2010 5:36 pm
Posts: 6
I'm about ready to spend my life savings on kits and fixtures, can anyone look at this track design and tell me if this is even possible. It's a switch layout from the cta Howard yard in chicago, as close to prototypical as NRMA standards would allow. They are L trains trains with short truck centers and 28" NWSL wheelsets. I can deal with tight tolerances but...(please, please say it's possible). Best case I would assemble as a single unit, wire for dcc and pray.

Thanks,
thad


Attachments:
switchesx.jpg
switchesx.jpg [ 809.96 KiB | Viewed 7138 times ]
File comment: overall layout
howardyard.jpg
howardyard.jpg [ 452.78 KiB | Viewed 7138 times ]
Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Tue May 11, 2010 9:38 pm 
Offline
User avatar

Joined: Tue Jan 26, 2010 8:35 pm
Posts: 29
Location: Indiana
I would guess that the best approach would be to divide and conquer with a complicated layout as you have portrayed. You do have to consider both the electrical and mechanical dimensions of this layout. On the mechanical side, it might be enlightening to layout your track plan in some sort of CAD program so you are sure of turnout positioning, track radii and clearances for ground throws etc. Sometimes, when we "sketch" these things out on paper it becomes easy to fudge a little bit here and there creating something in the abstract that just won't fly in the real world. A good layout planning program that uses components that do reflect accurately the actual turnouts and track you will build the layout with will help you to find potential trouble spots and plan around them. On the electrical side you will have to pay close attention to potential polarity reversing situations in a layout this complicated. I see some loops in your track plan and lots of crossover points, these could cause some problems if not wired and protected by the proper polarity switching hardware and/or electrical isolation gaps. If you can get it wired correctly and provide enough power drops DCC should not be any more a problem than DC. You might want to consider breaking this up into several power districts protecting each with its own DCC circuit breaker.

Also, keep in mind that this generally is a hobby and is meant to be enjoyed. I am sure you will have more than one frustrating moment during this project. Take plenty of breaks and always try to plan ahead. Don't box yourself into a corner. Something like this project is like playing chess, you need to be working 4 or 5 moves ahead of where you are and have a general working plan that carries you through to completion.

Inprinter

_________________
If the light at the end of the tunnel doesn't stay at the end of the tunnel, then it is time to beat a path in the opposite direction.


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Tue May 25, 2010 3:49 pm 
Offline
Site Admin

Joined: Fri May 07, 2004 11:22 pm
Posts: 311
Location: Port Dover, Ontario
Hi,

From looking at the sketch and templates, it all looks OK except for one slip switch in the center. It has a very noticeable kink in the alignment that will not work.

If you can shift it around somewhat, it might all fit, one this to remember, if it doesn't work on paper, it definitely won't work when you set it up. With trackwork as complex as this, it has to be dead on precise, otherwise you will be forever fiddling with it.

Wiring it might be a challenge, it appears that there are a lot of reverse loops in there.

_________________
Cheers!

Tim Warris
Fast Tracks
http://www.fast-tracks.net
service@fast-tracks.net


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Thu May 27, 2010 5:16 am 
Offline

Joined: Tue May 11, 2010 5:36 pm
Posts: 6


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Thu May 27, 2010 9:44 pm 
Offline
User avatar

Joined: Tue Jan 26, 2010 8:35 pm
Posts: 29
Location: Indiana

_________________
If the light at the end of the tunnel doesn't stay at the end of the tunnel, then it is time to beat a path in the opposite direction.


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Sat May 29, 2010 6:14 am 
Offline

Joined: Fri Apr 16, 2010 9:25 am
Posts: 6
You might also take a look at "Templot" - it is not a layout design program per se but rather allows complicated (or simple) track designs to be plotted and then printed at full size for whatever scale/gauge you input.
Worth a look anyway.

Best, Pete.


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Sat May 29, 2010 1:25 pm 
Offline

Joined: Tue May 11, 2010 5:36 pm
Posts: 6
I tried using 3pi, xtrakcad, and wintrack is what I did the layout plan on but it only had Atlas code55 track in the library. It would almost be as easy to manually load Fast Tracks into my AutoCAD. With all the store bought track and FT fixtures it still isn't prototypical but waste not... e.g.the prototype has a 100' radius curve, which is at scale a 7.5" radius and switches are like a #3!

So I am planning to build the switch and yard ladder network first and adjust the layout to be functional using a few custom solutions god willing.

Thanks,
thad


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Mon May 31, 2010 10:20 am 
Offline

Joined: Sat May 29, 2010 4:50 am
Posts: 1
You asked if you're Dreaming??? When I first saw this trackwork you wanted to build I thought you were smoking something illegal. Then I noticed that you said this was "from the CTA Howard yard in Chicago". I had to see this. Thanks to the good folk at Google Earth I found it (those of you who want to see the prototype just cut and paste the coordinates 42 01 12.59 N 87 40 27.46 W into Google Earth's "Fly to" box and press Enter). Whoever designed this prototype trackwork was seriously disturbed, even more so than the guy who designed the prototype for Tim Warris's Bronx Terminal.

Jokes aside, I think you have found a wonderfully complex and challenging piece of trackwork to build. Talk about a switching layout. You will have hours of fun building it and switching it when it's complete.

I was intrigued by the fact that you couldn't get the switches to line up properly. I noticed that you wrote #6SW on each of the Double-Slips. If you zoom in and print a Google Earth view of these switches then print out the FastTracks Double-Slip Templates and superimpose them on top of the Google Earth view you will find that they are not #6s. They are in fact an exact match for #5 Double Slips (available in HO but not in N scale).

I also noticed a slight difference in your layout compared to the prototype - the double slip 2nd from the right in your design is oriented differently in the prototype.

If I may make a suggestion. Why not open a blog on the Model Railroad Hobbyist website (FastTracks is one of their main sponsors) and document your construction of this yard (with photos). Hundreds of us would love to follow your efforts as we did with Tim Warris when he constructed his Bronx Terminal.

All the best,

Un3k


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Wed Jun 23, 2010 2:18 am 
Offline

Joined: Wed May 27, 2009 7:46 pm
Posts: 6
That's some track work. Not being one to pass up a good puzzle I took a quick stab at it in my cad program. I'll try to attach a PDF below.

In drawing over your template there were a few kinks in the centerlines. I took a fairly conservative approach with 1 1/4" track centers and most covers are 18-24" radius. Tangent Centerlines are in red, curves in Green. Good luck with your project.


Attachments:
Crazy Junction.JPG
Crazy Junction.JPG [ 289.19 KiB | Viewed 6893 times ]
Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Fri Jun 25, 2010 11:32 am 
Offline

Joined: Tue May 11, 2010 5:36 pm
Posts: 6


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Fri Jun 25, 2010 11:36 am 
Offline

Joined: Wed May 27, 2009 7:46 pm
Posts: 6
I think that jpg is full size at 36 x 24.

Also It was a 1st pass through and I think it could be compressed somewhat, partly this depends on what the surrounding trackage is doing. FOr example the two slips and the #6L around the crossing could all be slid together a bit if you are willing to cut/overlap the ties between the pieces. Also I used #6's as thats what I saw on your drawing, and it matched the #6 slips; but if you are building them #5's might help. I can send you a PDF if you like of what I drew, the resolution will be much better, it was too large to post here.

Good luck with your project.


Top
 Profile  
 
 Post subject: Re: Am I dreaming
PostPosted: Tue Oct 26, 2010 2:11 am 
Offline
User avatar

Joined: Tue Apr 08, 2008 6:31 am
Posts: 190
Location: Melbourne, Australia

_________________
Now waiting for a better currency exchange rate before I order. :D


Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 12 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group