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Cross Over Track Correct Polarity Wiring
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 Posted: Sun Feb 10th, 2019 11:20 pm
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man7sell
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I think I may have a problem when wiring my track.

I have a part of the track that crosses over from one side of the total loop to the other.
Highlighted in the orange circle.

Wiring the circle red to the inside track black to the outside.
The crossover track would effectively switch this polarity.

Or do I not wire this track and let the switches deal with it?

DCC BTW





Posted smaller photo.

Last edited on Fri Feb 15th, 2019 02:09 pm by



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 Posted: Wed Feb 13th, 2019 06:47 pm
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Si.
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Hi Paul  :wave:



I just plugged in my HUGE spare monitor ...

... & stood well back with my binoculars ...

... to check out your wiring problem. 

;)

Have you worked out what you're gonna do ?

I don't think "the switches" will deal with it.  :f:

L:

I can't help wondering if you need that track at all ?

Perhaps a couple more spurs might be better ?



???



Si.




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 Posted: Wed Feb 13th, 2019 07:28 pm
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man7sell
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I've ordered a reverse loop circuit that should take care of it.

Requires installing isolaters each end of that part of the track.

I'll make a concerted effort to post small pics Si.

Paul





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 Posted: Wed Feb 13th, 2019 09:03 pm
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Lee B
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Keep us posted.

I decided not to have a return loop at all on my layout but I've always wondered about such things.

I'm an educated man but I've just never 'got' wiring (that and sheet music)...





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 Posted: Thu Feb 14th, 2019 01:46 pm
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Si.
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:brill:


The 'classic' return-loop wiring ...

... with Power-Pack & D.P.D.T. ( Double-Pole Double-Throw ) switch.





The theory is ...  :old dude:

... The train runs into the 'insulated' return-loop section ...

... & whilst the train is still running ...

... you throw the D.P.D.T. switch ... ( 2-poles + & - ... 2-throw Polarity A & B )

... & the train runs out of the return-loop, onto NOW reversed/correct Polarity rails.



Clear as MUD ... right ?  L:



:java::moose::P



Si.




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http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Thu Feb 14th, 2019 05:53 pm
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W C Greene
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Holy Cow! I am glad that I don't have such things...my trains are pulled around with strings attached to the cow catcher.
Actually, the auto reverser should do the trick.
I do agree with Si, a couple of sidings might be useful and lots easier to wire.
Just my 2 cent observation... Woodie




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 Posted: Thu Feb 14th, 2019 06:18 pm
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man7sell
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The advantage is being able to turn direction of an entire train.

Still might change if I hate the wiring ;)





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 Posted: Thu Feb 14th, 2019 06:33 pm
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corv8
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man7sell wrote: The advantage is being able to turn direction of an entire train.


"Turning a complete train" was one of those things I wanted to have under all circumstances.

However, if you think this to the very end, you need two such arrangements,
or any train will end up running in the same direction,
with no way back other than shoving it through the crossover.

I solved the dilemma by having a track along the wall of the layout room for continuous running (rivet counters will hate me),
with one return loop on the same level, and a second return loop under it, partially hidden in a tunnel.

As I operate on DCC, relays take care of uninterrupted train running. 

What a blessing.... this alone justifies DCC.




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 Posted: Thu Feb 14th, 2019 06:34 pm
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Si.
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:old dude:

Legend has it, that very soon after some clever scientist chap discovered that copper conducted elektrickercy ...  :!:

... Woodie :cb: was one of the first, even before Robinson :brill: of 1874 ...


... to have WIRES all over the place !  :shocked:





Of course he quit the copper, for radio-waves, as soon as ZZ-Tops 'Eliminator' hit the FM stations back in the '80s.  :cool:





I'm pretty sure I've seen that 'Eliminator' 1933 chopped Ford around on Woodies :cb: layout ... somewhere ?  L:

Maybe round the back of Tillmans Autos ... RUSTY as hell back then it was, as I remember !  :old dude:



:!::java: ;)



Si.




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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Fri Feb 15th, 2019 08:12 am
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Helmut
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@man7sell

If you're running DCC, then   this one   may be one of the many available solutions.






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