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Reverse Loop Control with DC Power

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  • Member since
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  • From: Southern Florida Gulf Coast
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Posted by SeeYou190 on Friday, April 23, 2021 10:21 AM

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Posted by Dave K on Friday, April 23, 2021 11:06 AM
Layout wiring on the turn back is now working.  I did vacuum the entire layout.  Who knows what happened?  Maybe some iron filings?
 
I have learned to work the two DPDT switches and the train is running.  However, when the train leaves the last isolated block, I must throw this block off and revers the power to have it continue.  I will look into this.
 
Dave K
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  • From: Southern Florida Gulf Coast
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Posted by SeeYou190 on Friday, April 23, 2021 11:11 AM

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Posted by Dave K on Saturday, April 24, 2021 5:58 AM

I plan to add a 3rd DPDT to contol the main line and not have to control direction from the power pack.  Thanks all.  Off to a local train meet/sale.

 

Dave

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  • From: Maryland
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Posted by ATLANTIC CENTRAL on Saturday, April 24, 2021 8:04 AM

Dave K

I plan to add a 3rd DPDT to contol the main line and not have to control direction from the power pack.  Thanks all.  Off to a local train meet/sale.

 

Dave

 

Exactly as I proposed, that will allow smooth operation.

Sheldon

    

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Posted by ATLANTIC CENTRAL on Sunday, April 25, 2021 9:07 PM

Really?

Why in the world would you want to be required to throw the two switches at the exact same time under a moving train?

That is no fun in having to do that, nor is it really a good idea, since there there will be no assurance of smooth transition.

In my 53 years at this, I have never heard or seen anyone suggest such a thing.

Separate switches, ignoring the switch on the power pack, is the correct way to handle this.

Sheldon

    

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  • From: Maryland
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Posted by ATLANTIC CENTRAL on Monday, April 26, 2021 8:46 AM

Ok, Mike, I'm tired of trying to understand what you write. 

You need to be able to reverse the main and the reverse section separately. So you need two toggle switches wired in AFTER the power pack reversing switch.

I'm not interested in what the Atlas book says.

Sheldon out.

    

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  • From: Southern Florida Gulf Coast
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Posted by SeeYou190 on Monday, April 26, 2021 10:21 AM

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Posted by SeeYou190 on Wednesday, April 28, 2021 11:32 AM

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Posted by Dave K on Wednesday, April 28, 2021 1:54 PM

Kevin,

Yes except that there are only two parallel tracks at the bottom of the page.  Remove the third inside track at the botom of the page.

 

Dave

 

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  • From: Southern Florida Gulf Coast
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Posted by SeeYou190 on Wednesday, April 28, 2021 2:49 PM

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Posted by SeeYou190 on Wednesday, April 28, 2021 6:31 PM

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Posted by SeeYou190 on Wednesday, April 28, 2021 6:39 PM

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Posted by Dave K on Sunday, May 2, 2021 8:34 AM

I have figured out how to use the two DPDT switches to get through the 1st turn back but since I do not want to use the throttle diI hrectional switch, how do I add a 3RD dpdt for the main line feeders?

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Posted by Dave K on Thursday, May 13, 2021 8:07 AM

Presently, my layout has one turnback and a main line. I have plans for a 2nd turnback. I have the turnback wiring in a block with DPDT switch and the section of track leaving the turnback gapped to control by a 2nd DPDT switch. I do not want to use the throttle to control polarity when the train moves into the main line so I plan to add a 3rd DPDT switch. I assume that I should have terminal boards for both power in from throttle (+/-) and power to DPDT's, and from from DPDT's to track feeders?
Regards,

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  • 137 posts
Posted by Dave K on Wednesday, May 19, 2021 5:35 AM

Presently, my layout has one reversing turnback, three DPDT switches and five track feeders.  I will be adding another reversing turnback.  Considering all of the polarity changes, should I consider using the "common rail system"?

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