I'm posting this question here, even though my "test bed" engine is an American Flyer #302AC.
I have been using an MRC "O27" unit; I like the fact that it starts at "0" volts, so I figured this makes for smoother starts. However...
I picked up an old Lionel Type "S" a while back; found it at a local antique mall for 5 bucks. It's in great shape, but the cord had been cut; I was able to attach a new plug, but the cord is only about a foot and a half long. As it is it works perfectly with the correct output voltage. I'd like to put on a replacement cord, but am afraid of mucking it up.
My point to all this is: this old unit actually runs the above mentioned loco better than the newer, solid-state MRC. Since the open-frame motor is not a great slow runner, the "S" will run the engine as well as the MRC, through all speed ranges. Does this surprise anyone?
I'm now wondering how this unit would run my 1999-vintage Lionel E6. Will wait to get some feedback before I try it...
Mark (still running old school ) in Oregon