I determined it was the LGB power pack that was causing the train to loose power.  I could hear the the thermal circuit breaker popping when the train stopped. 

I pulled out the Bachmann power supply, and hooked it up.  I didn't have any trouble as a result of the larger VA rating.

Thank you for all the help.

Gentlemen,

I have been using an LGB transformer 50030 that is rated for 1/2 amp because I am using LGB track.  I still have the transformer that was supplied with the set.  Does that have a greater amperage output?

Hello,

I am having trouble with a Bachmann G scale 4-6-0 that I received in a starter set.  The set is the Suwannee River Special (cat. no. 90027).  I believe this set was catalogued sometime in the '90s. 

After running the engine for roughly 15 or 20 minutes, the locomotive will start to slow down, and then eventually stop.  Sometimes it would start moving again on its own, other times, I would have to give it a slight nudge.  It would start running again, and eventually repeat the same process.  At first, I just assumed it was a loose connection somewhere, so I decided to take the shell off.  All connections appear to be solid.  I tried jiggling various connections, and that had no affect on the performance of the engine.  Nothing appears to be binding in the drive train.  The can motor is warm when it does stop.  Is it possible the motor is over heating.  Is this type of problem I described common with these locomotives?