Ted S posted:
To sum up: I warrant that two POWERED GP9s in consist will give more realistic initial acceleration with a heavy train, and; more consistent operation when going from tangent track into sharp curves running light; than would a Williams or MTH PS1 diesel with two can motors. If you're willing to buy a second powered unit and MU them, my experience suggests that the Lionel geeps will be more gratifying to run.
I have two powered Lionel GP7s, one Postwar, one modern, both with 2028-100 motors. Both have ERR AC Commanders installed and are set to 100 speed steps. Run individually their performance isn't great. But run together they preform like a twin motored F3 or Trainmaster, which is to say pretty decent. With the AC Commander under TMCC the GP7s will run consistently in the 20-30 scale MPH range on 054 curves pulling a train without complaint. I installed diecast fuel tanks under both, and the added weight helps a bit as well.
My recommendation would be two powered Geeps and AC Commaders in both, for the best operation. Op just runs conventional, so that may not work for him 
.
