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Old loco smoke generator

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  • Member since
    February 2002
  • From: Westchester NY
  • 1,747 posts
Old loco smoke generator
Posted by retsignalmtr on Monday, November 25, 2013 12:42 PM

I have an American Flyer HO Hudson Loco from the mid '50's that I installed a decoder in. Runs great. I did not hook up the smoke generator because I didn't know if it would work on DCC. Short of hooking it up and damaging something, has anyone done this before?

  • Member since
    July 2003
  • From: Sierra Vista, Arizona
  • 13,757 posts
Posted by cacole on Monday, November 25, 2013 2:54 PM

Don't connect the smoke generator unless you have used a decoder meant for heavy current draw, or your decoder may become a smoke generator for a brief instant.

You need to measure the smoke generator's current draw and compare that to the function capacity of the decoder.  Most decoders can handle only 250 mA current on their function outputs, and the smoke generator, being a heating element, may draw more than that.

 

 

  • Member since
    October 2006
  • From: Western, MA
  • 8,571 posts
Posted by richg1998 on Monday, November 25, 2013 3:10 PM

Right out of the SoundTraxx website. Piece of cake.

http://www.soundtraxx.com/manuals/Tech_note%2014.pdf

The small Radio Shack relay 275-233 might fit the tender. It works on 12 VDC and draws only 11.4 ma. Contacts are good for 0.5 amp. A diode across the coil.

Rich

If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.

  • Member since
    February 2002
  • From: Westchester NY
  • 1,747 posts
Posted by retsignalmtr on Monday, November 25, 2013 4:33 PM

Thanks for the replies. The decoder I used is a DZ123 (because I had it on hand). It has just light and motor controls. I plan to replace it with a sound decoder, although it has a chuff piston that sounds pretty good. I have several of the smoke generators and will test the current draw with several different resistors. I can put in a toggle or slide switch in the tender to control it

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