MTH Premier 44 Tonner behavior

Thats the way its suppose to be

The trucks don't have much travel so any uneven track or operation on curves will cause the non-traction tired wheel to lift, breaking connection.  With only two wheelsets picking up power, this is an issue, especially if both outside rails are not grounded. Also, if you notice a spike in power, the motor leads can touch inside the shell when running on uneven track as the trucks rock (rare, but I have seen it).

Brian, only one truck has the tach reader for speed control.  If that truck is running free, the other truck has very little power applied and it's very easy to stall the motor on that truck.  This is perfectly normal for any model train engine with dual motors and speed control using a flywheel tach.

What GRJ states is the reason why this behavior is present on all DCS twin-motored locos, not just the 44-T.

My 44T lost power(dark, no DCS control) over some Ross switches(I have 40 plus) but OK on Gargraves track.  Center roller was loosing contact with center rail, especially at very slow spds.  Solution was to cut the black plastic insulator piece off each end of each roller using a box cutter.  Runs perfect now

Bob R