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turtables

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  • Member since
    February 2001
  • From: Poconos, PA
  • 3,948 posts
Posted by TomDiehl on Sunday, January 20, 2008 12:45 PM
 MisterBeasley wrote:

Some commercially-produced turntables (the Atlas, for example) incorporate this into the mechanism.  They use a variation of a split-ring connection, which flips the polarity every 180 degrees.  I did a brief search at a couple of electronics supply places, but didn't have any luck.

If you're running DCC, you can wire the turntable through an auto-reverser, the same kind that is used for reverse loops.

Maybe we should ask up4005 what brand turntable (or turtable) he's using. It may already have this built into it.

Smile, it makes people wonder what you're up to. Chief of Sanitation; Clowntown
  • Member since
    December 2004
  • From: Bedford, MA, USA
  • 21,481 posts
Posted by MisterBeasley on Sunday, January 20, 2008 11:14 AM

Some commercially-produced turntables (the Atlas, for example) incorporate this into the mechanism.  They use a variation of a split-ring connection, which flips the polarity every 180 degrees.  I did a brief search at a couple of electronics supply places, but didn't have any luck.

If you're running DCC, you can wire the turntable through an auto-reverser, the same kind that is used for reverse loops.

It takes an iron man to play with a toy iron horse. 

  • Member since
    November 2007
  • 1,089 posts
Posted by BlueHillsCPR on Sunday, January 20, 2008 9:50 AM

 Railphotog wrote:
So, turtables - anything like a turntable?  Cool [8D]

You couldn't resist either huh?  I think "Turtables are the peanuts, carmel, and chocolate BEFORE they are made into Turtles...mmmm Big Smile [:D]

 

  • Member since
    July 2006
  • From: Canada's Maritime Provinces
  • 1,760 posts
Posted by Railphotog on Sunday, January 20, 2008 9:34 AM

So, turtables - anything like a turntable?  Cool [8D]

Wires to the turntable need to be controlled by a DPDT switch - Double Pole Double Throw switch, preferably with center off.   Power wires to the turntable come from the center contacts.  Power wire go to the outer ones, with the poles reversed.  Is really simple when you understand how they work.

 

 

Bob Boudreau

CANADA

Visit my model railroad photography website: http://sites.google.com/site/railphotog/

  • Member since
    January 2005
  • From: New Milford, Ct
  • 3,232 posts
Posted by GMTRacing on Sunday, January 20, 2008 8:01 AM
You would have to wire the feed to the rotating turntable track the same as a reverse loop with a switch. I'm sure there is a link to a wiring tutorial somewhere - I just can't find it now.   J.R.
  • Member since
    April 2003
  • 305,205 posts
turtables
Posted by Anonymous on Sunday, January 20, 2008 7:37 AM
how do you stop the reverse polarity when the turtable travels 360Deg is there some gismo for this, i wish to build my own TT and this is a ? at the moment can anyone help please.

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