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Author Topic: Polarity Issue  (Read 1787 times)
007shang

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« on: February 22, 2013, 02:52:12 PM »

We have a n scale yard boss that the track is set up in an oval configuration with the figure 8 cross inside. We are using 2 right remote y's, 2 left remote y's, and a 60 degree crossover. When connected the train switches polarity when it goes into the cross, so how do we correct the problem? We have read about adding a jump wire where it goes into and out of the figure out, but wanted to know where to put it exactly. Any help would be appreciated.
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Mike C

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« Reply #1 on: February 22, 2013, 09:00:32 PM »

What you now have is a reverse loop. The track is shorting out when you throw the switches.  This is going to take a bit of special wiring to get it to work. This may help a bit http://www.outsidetrains.com/info/reverse.html . If you Google reverse loop wiring, you should be able to get some more info.....Mike
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GG1onFordsDTandI
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« Reply #2 on: February 24, 2013, 07:22:22 PM »

What you now have is a reverse loop. The track is shorting out when you throw the switches.  This is going to take a bit of special wiring to get it to work. This may help a bit http://www.outsidetrains.com/info/reverse.html . If you Google reverse loop wiring, you should be able to get some more info.....Mike
Mike is absolutely correct, there are other more complicated methods with relays etc., which may serve you better in the fig.8 but his example is a great one. Simple to use AND learn from, should you wish to use auto-relays in the future you can build off it.
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James in FL

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« Reply #3 on: February 26, 2013, 08:03:49 PM »

Hi 007shang,

Do you still need help with this?

You will need to create two blocks and get two DPDT switches and eight insulated joiners.
 
Really not all that complicated to block and wire.
The hard part is keeping up with turnout position and polarity.
While fun for a while, the novelty will soon wear thin as flipping switches will keep your attention rather than watching your train.

If you have already figured it out than good for you, if not I can walk you through it.
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