wiring council needed

korm kormsen

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24 Oct 2009
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i am trying to make a wiring-plan for something that is new to me.
so far i did not come up with a solution, that seems to function.
anybody wants to torture his brain a bit?

what i did before, is run trains in circles, like in the first pic.
one half of the trains is wired in reverse.
the wiring was more or less like this:
(there were variations, but i don't want to sidetrack)

hafen10.JPG


well, in reality it was more like this:

hafen11.JPG


so far - no problem.
but as a former sailor, living in a half-desert, i simply HAVE TO include a harbour into my layout.
this harbour, as i vision it has two piers with two tracks each.
the trains drive on one of the piers, then back up on to the other, before they resume their journey around the circle.
so that the whole thing would be like this:

hafen12.JPG


how to wire this "double wye" with sidings is what i am braining about. but it seems to be a real brainbuster.
the system is simple analogue DC.
i got more than enough turnout-motors and additional switches (double throw) and reed contacts avayable. (LGB and home-made clones)
this is, what has to happen:
let us pretend, that two trains (one normal, one reversed) are in the northern station.
i already coloured the rails after the polarity needed.
hafen02.JPG

the right, outer loop represents the connection with the rest of the layout. for better understanding i leave that out for the moment.
one train leaves north-station, going into the main loop:
hafen02step1.JPG

the other train reverses to south-station:
hafen02step2.JPG

a train comes from the main loop into south-station:
hafen02step3.JPG

hafen02step4.JPG

the train, that had backed up into south-station leaves for the main loop:
hafen02step5.JPG

the remaining train backs from south-station up into north-station:
hafen02step6.JPG

a train from the main loop heads for north-station:
(note - the polarity as shown in the pic has to be changed, before the train enters the station)
hafen02step7.JPG

with that, the sequence begins to repeat itself:
hafen02.JPG


the goal would be to wire this with less than a hundred wires.
(on the other hand i would not like to let any reed activate more than two motors...)
anybody willing to help my overloaded brain back on track?
 

C&S

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3 Nov 2009
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Is there a problem other than the 2 locos have opposite polarities? As far as I can see there's no reverse loop or triangle created by your plan. You just need to remember to turn the controller the "wrong" way when the reverse polarity loco operates.

Failing that, how about wiring a DPDT chage-over switch between the controller and the layout with one setting for loco 1 and the other for loco 2. Or am I missing something?
 

Dtsteam

G Scale, Travel, Steam Boats, Mechanical Music
24 Oct 2009
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Korm,
What a lovely problem !

In an hour, I will have no access to the forum for a week, as I will be playing with my favourite train set (Switzerland).
My friends are also toy train men, so send your email address to [style="color: #ffffff;"]daviddottravisatbtinternetdotcom and we will bend our minds to your problem.

Kind Regards

David
 

korm kormsen

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24 Oct 2009
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C&S said:
Is there a problem other than the 2 locos have opposite polarities? As far as I can see there's no reverse loop or triangle created by your plan. You just need to remember to turn the controller the "wrong" way when the reverse polarity loco operates.

Failing that, how about wiring a DPDT chage-over switch between the controller and the layout with one setting for loco 1 and the other for loco 2. Or am I missing something?

really, there is no problem, but the complexity of a lot of known things combined.
the layout is planned as fully automatic. once built, my part in the operation shall be reduced to turn on the main switch - and to turn it off after sessions.
the rest of the operation i will leave to magnets, reeds and switches.
there are six trains - three of each polarity.
there are six stations. two head-stations and four passing sidings.
generally it is a two step operation.
first step - all six trains leave stations one, three and five.
second step - all trains leave stations two, four and six.
(edit: i will alterate the pics two and three in the first post, to make that clearer)

naturally the trains at the two head-stations have to leave one after another, to avoid crashes.
and they have to go backwards between head-stations. (like they would in a wye)
David,
e-mail sent. i hope your braintrust will come up with something.
 

C&S

Registered
3 Nov 2009
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Ah! I hadn't taken in the full complexities, having missed the fact that you want to operate automatically. That does change things, somewhat, and I'll leave the problem to someone with better electronic expertise.
 

Bram

Playing trains, Ballroom Dancing, Good Food & Wine
24 Oct 2009
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Oh, my head hurts
 

tramcar trev

all manner of mechanical apparatus...
Hmmm maybe check out my solution in the tramsignalling thread.....
 

korm kormsen

Registered
24 Oct 2009
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thank you Trev.
that is an aparently more professional blocksystem, than mine.
but, where i am really stuck, is the combination of reversing polarity for backing up - with a priority system for two trains of different polarity wanting to use the same turnouts in different directions.
and, to complicate everything, just by using the avayable components.
(which are reeds, LGB turnout switches and LGB add-on switches.)