Transformer Help Needed

The Z-750 is very similar in capacity to the CW-80, though it might just be better with that locomotive.  Hard to imagine you need more than 75-80 watts for one locomotive.  Does it run with no other load on the transformer?  Why not run the lights from the secondary transformer?

As far as using the Lionel throttle on the Z-750 brick, it probably should work if it's like the other Lionel separates.  The brick that comes with the Lionel throttles is just a bare transformer, and I believe that's what your MTH brick is also.

Was the postwar berk serviced before you bought it. Try runnig it without the accessories hooked up. You are probally pulling close to 3 amps off them alone if these are postwar with incandesent bubs.

Knowing how well Lionel & MTH have played together in the past, and knowing how the "not invented here' syndrome is between different companies, it sure gives me pause that a Lionel controller will just plug into another companies power source and operate without issues. If you knew that the Lionel controller plug was wired exactly like the MTH controller plug, then you might have a chance. 

I doubt you will smoke the MTH brick, but you stand a chance of damaging the Lionel controller if the wiring isn't compatible.

Larry D.

Well, I was assuming you'd have to wire it properly, but there are only two wires going into the Lionel controller, and they come from the transformer.  The chances of it working are actually pretty good.

I didn't say I'd recommend doing this, just that it would probably work.

How many feeders do you have on your track.  Even if it is only 6x6 you should connect  in several places.  If an oval - then try at 12 oclock 3 oclock 6 oclock and 9 oclock