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I have six locomotives on my layout. Three have a single powered engine and I have set up as Engines on Legacy. I have three other locomotives which I have set up as Trains as there is more than one powered locomotive. The three that are set up as Engines run perfectly. The three that are set up as Trains run for a few seconds and then cause my ZW-L to short. In each case all of the cars are on the track properly and I can reset the transformer to eliminate the short. I can then run the Engines with no problem but all three of my Trains will short again. I am assuming I have set something up wrong but I believe I followed the manual. Can anyone give me some suggestions.

Thanks

Original Post

Thanks very much for your answer. I checked how I had them set up in one of the trains. I had the direction for all going the same way. I saved it again and the train ran well for some time but then it caused a short for no apparent reason. I reset the short and it ran again. I'll keep experimenting with the trains and see if I can find the cause.  But just for confirmation, the Direction of each powered locomotive should be the same regardless of which direction the trailing locomotive is pointing?

The directions can be different, I was just pointing out one of the issues of running MU configurations with TMCC/Legacy.  A power interruption to one engine resets it to forward.  That's not a big issue if it's configured that way in the consist, but if it's configured to run backwards, then they'll be pulling in opposition.

Thank you again. I have to admit I am confused. I can't picture a situation where I would set one of two engines in a train to go in opposite directions. I don't think the Lionel instructions address this point. They merely say how to change directions. Two of the Trains I am having issues with contain a locomotive and then a powered B-unit and a non-powered locomotive.  Maybe it is the direction of the powered unit that is causing the problem. Knowing that direction is no doubt the problem, I think I will play with combinations of directions until it runs correctly. By then I will hopefully  understand it. 

Lionel Hampton,

     Can you identify the engines you have in your lash up (Please include product #, what it is (RS11, SD70ACe etc), TMCC or Legacy and if you could include a video of the lash up Causing the short light to come on. If you are running a early model engine it may start long hood forward instead of short hood forward as modern diesels are set up. That could cause the issue of the engines pulling against each other. If they are on a curve the wheels of an engine could be lifted off the tracks causing the short. 

Thanks

JohnB

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