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Have a 7x7 "square" layout on old style O-27 track.

Using Lionel brand manual switches, I have created an inner loop which will eventually be used to drop power and store and engine+cars while I run a second engine+cars to outer loop. 

 

When I first began today, I had full power to run my 7x7 square route.

 

Once I add in lionel switches along with newer inner loop, power completely dies. I went ahead and removed the inner pins directly after the switch as several forum posts have shown to be necessary. 

 

I have at my disposal:

2 lionel brand lockons plus sufficient wire for them

2 different Double Pole Single Throw switches for killing power to the associated track.

 

After failing to wire my lockons and switch correctly today, I am prepared to start back at the beginning and try other ways. 

 

I realize today that I was never meant to become an electrician, small scale or not.

 

So where do I begin?

 

 

This is the switch inserted into layout, same thing for other side just opposite switch.

TrainHelp1

 

Switch One Has Three posts & Three Places where the switch can be flipped(far, middle, close)

trainhelp3

 

Switch two has 4 poles and can only be in off or on place, no middle position for this switch.

trainhelp4

 

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Images (4)
  • TrainHelp1
  • trainHelp2
  • trainhelp3
  • trainhelp4
Original Post

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Let's start with the electrical switches. What you have is one SPDT with the 3 screws and one DPST with the 4 screws. All you need is a pair of SPST's which would have 2 terminals. However, the ones you have can be made to work. 

 

My understanding of your trackplan is a simple loop with a passing siding. You want to be able to have 2 trains, one parked and one running at any time. What you need is 3 lockons and 4 insulating pins. The insulating pins go in the center rail of both the straight and curved legs of each switch. This will create two sections of track that can be controlled with the electrical switches.

 

One lockon goes to each, and the third goes on the main section of the loop. Power is always on in the main section, and the other 2 sections are controlled by the switches.

Originally Posted by Big_Boy_4005:

Let's start with the electrical switches. What you have is one SPDT with the 3 screws and one DPST with the 4 screws. All you need is a pair of SPST's which would have 2 terminals. However, the ones you have can be made to work. 

 

My understanding of your trackplan is a simple loop with a passing siding. You want to be able to have 2 trains, one parked and one running at any time. What you need is 3 lockons and 4 insulating pins. The insulating pins go in the center rail of both the straight and curved legs of each switch. This will create two sections of track that can be controlled with the electrical switches.

 

One lockon goes to each, and the third goes on the main section of the loop. Power is always on in the main section, and the other 2 sections are controlled by the switches.

That's correct, simple loop with passing siding. I'm going to go grab a few SPST switches at a local store. 

 

From there, I take wire from transformer to first terminal, then wire leaving to center rail of one of the tracks?

 

Don't have any insulating pins this evening, how important are those as opposed as just pulling the pins in those positions?

 

 

Leaving the pins out is OK, just make sure there's a gap. The nice part about the pins is they have a rim that prevents contact.

 

You don't need to run out for the SPST's. You can get it done with what you have.

 

So you run the power directly to the main section of the loop. Then you run the power through the electrical switches to the two insulated sections, so they can be turned off.

Last edited by Big_Boy_4005
Originally Posted by Big_Boy_4005:

Leaving the pins out is OK, just make sure there's a gap. The nice part about the pins is they have a rim that prevents contact.

 

You don't need to run out for the SPST's. You can get it done with what you have.

 

So you run the power directly to the main section of the loop. Then you run the power through the electrical switches to the two insulated sections, so they can be turned off.

Ok man, short update. Got switches wired.

 

Outer original loop is back in working condition. 

 

Here's the new problem, when I try to bring power to the inner track (regardless off what position the first switch is on), it severely dies and eventually overloads the transformer. Everytime this happen I try to revive the circuit by cutting both off and only powering the inner circle, nothing will come from it.

Originally Posted by Big_Boy_4005:

Sounds like a dead short. You might have a bad section of track. Many years ago I bought a brand new batch which had a bunch of problems. The machine had punctured the insulator cardboard during manufacturing.

 

Got a meter?

sure do, i'm calling it a night for now, update tomorrow. Thanks for your help so far.

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