Gilly@N&W posted:I'll take a crack. Yes O Gauge is AC. In general volts are volts. When you power the track there is nothing "special" about the brand of the transformer. There is a Lionel transformer (CW80) that has an electronically chopped sine wave that doesn't work well with MTH engines. That is an exception. I cannot recall any discussion of where a Brand X locomotive won't run with a MTH transformer.
Is it possible that the Z750 is inadequate? Yes, depending upon how much track you have. There are several other things that you could be dealing with. Dirty track, pickups, or wheels. If the engines have been sitting unused for a prolonged period of time they may need a good cleaning and lubrication.
The CW80 is hardly unique in its chopped wave output. In fact, MTH’s Z-500, Z-750 and Z-1000 also have chopped sine wave outputs.
The MTH Z-4000 is pure wave, as is Atlas’ Pure Power and all postwar transformers.
