[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
[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 - Double Crossover wiring

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 Jan 15, 2021 6:53 pm

All times are UTC - 5 hours [ DST ]




Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 45 posts ]  Go to page Previous  1, 2, 3  Next
Author Message
 Post subject:
PostPosted: Wed Apr 18, 2007 10:48 am 
Offline

Joined: Mon Nov 21, 2005 9:28 pm
Posts: 44


Top
 Profile  
 
 Post subject:
PostPosted: Fri Apr 27, 2007 1:42 pm 
Offline

Joined: Mon Nov 21, 2005 9:28 pm
Posts: 44


Top
 Profile  
 
PostPosted: Fri Jul 06, 2007 1:22 pm 
Offline

Joined: Fri Jul 06, 2007 12:52 pm
Posts: 5


Top
 Profile  
 
PostPosted: Fri Jul 06, 2007 7:48 pm 
Offline

Joined: Mon Nov 21, 2005 9:28 pm
Posts: 44


Top
 Profile  
 
PostPosted: Sat Jul 07, 2007 12:06 pm 
Offline

Joined: Fri Jul 06, 2007 12:52 pm
Posts: 5


Top
 Profile  
 
PostPosted: Sat Jul 07, 2007 1:27 pm 
Offline

Joined: Mon Nov 21, 2005 9:28 pm
Posts: 44


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 15, 2007 3:43 pm 
Offline

Joined: Tue Jan 17, 2006 3:32 pm
Posts: 5


Top
 Profile  
 
 Post subject:
PostPosted: Wed Aug 15, 2007 5:52 pm 
Offline

Joined: Mon Nov 21, 2005 9:28 pm
Posts: 44


Top
 Profile  
 
 Post subject:
PostPosted: Tue Mar 11, 2008 11:05 am 
Offline

Joined: Tue Feb 06, 2007 11:32 am
Posts: 41
Sorry ro resurrect an old thread gents. The DC wiring calls for a 12 volt really. I was wondering if this little guy would be sufficient?

http://www.thesourcecc.com/estore/Produ ... ct=2750249


Top
 Profile  
 
 Post subject:
PostPosted: Tue Mar 11, 2008 11:24 am 
Offline
User avatar

Joined: Sat Aug 13, 2005 10:48 am
Posts: 365
Location: East Texas - USA
Yes, the control of the relay is only 60ma, and the contacts can handle 5a - more than sufficient. Good find at a reasonable price. Do search around for a socket base and you have a nice easy to maintain system - but I wouldn't pay too much premium for a socket - soldering to the contacts would be OK with some care and the unit should last longer than your life.

_________________
-ed mccamey-
COSLAR RR - http://www.coslar.us/
NMRA Standards and Conformance Department
PROTO & FINE Scale Coordinator
I estimate I have about 5 pounds of coupler springs somewhere in the vicinity of my workbench.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Apr 16, 2008 9:59 am 
Offline

Joined: Tue Feb 06, 2007 11:32 am
Posts: 41
Bump.

I figured instead of starting a new thread I'd just post up my question on this one. It follows the same lines, just only half of a cross over in this case.

Here is what I'm dealing with.

Image

Sorry for the crappy MS Paint pic. The frogs are in black and I hope the gaps are clear enough. Green and Red are the colours that I chose for the track buss wiring. I am using Tortoise Machines to control the two t.o's. Am I correct in assuming that I should be able to use the secondary internal switch in the Tortoise to switch the polarity of the frogs on the crossing? Realistically, you'd only have one loco using the crossing at a time. So as long as ensure that both t.o's are wired so that the polarity is correct when they are thrown, then I should be good to go. Right?

I think I tend to over think this stuff too much.[/img]


Top
 Profile  
 
 Post subject:
PostPosted: Wed Apr 16, 2008 5:41 pm 
Offline
User avatar

Joined: Sat Aug 13, 2005 10:48 am
Posts: 365
Location: East Texas - USA
If you should ever throw both turnouts at the same time, you'll end up with a short. I'd suggest each turnout only control one crossing frog. In the non-crossing position the controlled frog would be set for the opposing turnout route such that with one turnout thrown, then it sets its' frog for crossing and the other frog stays at crossing (since it' set to straight).

This way, you'll not have a dead short and proper operation would only occur with one turnout thrown to the crossing. It's a bit of fail safe. I you have trouble visualizing the connections - let me know - I can colorize a two (or four) position graphic that could help.

_________________
-ed mccamey-
COSLAR RR - http://www.coslar.us/
NMRA Standards and Conformance Department
PROTO & FINE Scale Coordinator
I estimate I have about 5 pounds of coupler springs somewhere in the vicinity of my workbench.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Apr 16, 2008 8:44 pm 
Offline

Joined: Tue Feb 06, 2007 11:32 am
Posts: 41
Thanks. That was the idea. I just wanted to make sure it would work.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Apr 17, 2008 9:16 am 
Offline

Joined: Tue Feb 06, 2007 11:32 am
Posts: 41
I got it wired up and working last night Ed. Thanks for confirming my ideas as to how it needed to be done. Locos roll through fine now in both directions. And I like the "safety feature" if one the t.o.'s is left thrown in the wrong position.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Apr 17, 2008 9:24 am 
Offline
User avatar

Joined: Sat Aug 13, 2005 10:48 am
Posts: 365
Location: East Texas - USA
Congratulations. It's not all that hard to reason out the wiring - especially when using colorized templates. Sometimes, like with a double crossover, the scheme does require asserting route selection and control to get it right.

With DCC, one can have the option of auto polarity changes electronically, but usually a simple fail safe method will be more robust.

_________________
-ed mccamey-
COSLAR RR - http://www.coslar.us/
NMRA Standards and Conformance Department
PROTO & FINE Scale Coordinator
I estimate I have about 5 pounds of coupler springs somewhere in the vicinity of my workbench.


Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 45 posts ]  Go to page Previous  1, 2, 3  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Bing [Bot] and 2 guests


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