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Bachman Decapod

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  • Member since
    April 2008
  • 14 posts
Bachman Decapod
Posted by Walschaerts on Saturday, May 3, 2008 9:25 PM

So the other night I was inspecting my Bachman decapod making sure it had the necessary plug in play components for the DCC system we are looking at buying. So anyway I found that every thing was in order and reattached the shell and the wires to the locomotive. Now the engine runs in reverse, but when in forward motion it only moves forward a little bit and stops. It will not start up in either direction once it stops. When it stops the motor and the head light both shut off. Also all the other engines on the track at the same time also stop. But once i remove the decapod from the test track all the other engines move over the track without stalling. The only thing I can think of as being wrong is I did remove the cover, covering the DCC plugs. I made sure to reinstall it before I reattached the shell, could that have caused a problem?

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Posted by UpNorth on Saturday, May 3, 2008 9:39 PM

You removed the DCC jumper block (what you refer to as the DCC cover)..  Double check that no pin on the jumper block is broken or that the jumper block is not out of alligned with the 8 pin socket.  Apart from that double check you're  2 connectors (engine to tender) are installed and oriented properly.  The DCC jumper block does not have a specific orientation, but go by the diagram included. 

http://www.bachmanntrains.com/home-usa/dwg/dwgs/H817X-IS001.PDF

 

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Posted by Walschaerts on Saturday, May 3, 2008 9:52 PM
Well I know that the jumper is aligned properly and there are no broken pins one it, the engine and tender are hooked up like i always have them. So yeah, I don't know what the problem is.
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Posted by UpNorth on Saturday, May 3, 2008 9:59 PM
Triple check the jumper. Your engine is shorting out track power from what you describe. Try putting it on the track  with the DCC jumper removed. The engine will not run but it will indicate if something else is wrong. Look for pinched wires in tender.
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Posted by Walschaerts on Saturday, May 3, 2008 10:19 PM
Okay just did what you suggested and it shorted out the power and the power pack reset itself. So where should I look for pinched wire? between the engine and tender or on the actually board itself?
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Posted by UpNorth on Saturday, May 3, 2008 10:34 PM
Unplug the engine from the tender and put one at a time on the track. Have to find out who is causng the short first.
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Posted by Walschaerts on Saturday, May 3, 2008 10:46 PM
Well I unplugged the engine and tender and neither of then shorted the track and other engines ran just fine on the same track. I plugged the engine and tender back together and now it not only shorts it doesn't want to move backwards or forwards.
  • Member since
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  • From: Western, MA
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Posted by richg1998 on Saturday, May 3, 2008 11:08 PM

 Walschaerts wrote:
Well I unplugged the engine and tender and neither of then shorted the track and other engines ran just fine on the same track. I plugged the engine and tender back together and now it not only shorts it doesn't want to move backwards or forwards.

Was the unplugged loco and unplugged tender still sitting on the tracks? 

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.

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Posted by Walschaerts on Saturday, May 3, 2008 11:16 PM
I unplugged the tender and the engine and placed them on the track a different times and wait to see which one shorted the track and they both failed to cause a short.
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Posted by UpNorth on Sunday, May 4, 2008 12:03 AM
One weird problem.  You did not take anything else apart, like tender trucks did you ? 
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  • From: Western, MA
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Posted by richg1998 on Sunday, May 4, 2008 1:22 AM

Another possibility is you put the two pin plug from the loco in backwards. That would be difficult to do. The short would only show up when both are connected and on the track. The below link shows the Specrum Decopod. I have been told some Spectrum steamers have different wiring configurations. Some tenders pickup on one rail with the front truck and the opposite rail on the rear truck. My Spectrum 4-4-0 is like that. If I was to reverse one truck and plug in the loco, a short would occur when put on the track.

I think some tenders pickup only one rail with both trucks. Not sure.

http://www.bachmanntrains.com/home-usa/dwg/dwgs/H817X-IS001.PDF

Hope this helps. You might pickup a inexpensive voltmeter at Rat Shack, Home Depot or Lowes. The meters have a resistance scale. Anyone using DCC should never be without a voltmeter. To me that is like going out around town with no wallet.

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
    April 2008
  • 14 posts
Posted by Walschaerts on Sunday, May 4, 2008 8:09 AM
Thanks! I just reversed the lead tender truck and it ran fine, backwards and forwards. Thanks again.
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Posted by UpNorth on Sunday, May 4, 2008 6:53 PM
We were glad to be of help.

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