I did a double motor conversion on a Lionel F-3 ABA NP I had sitting in the parts bin, The shells were shorter than the Williams, so I had to use the motor and truck from a Wilson Williams engine, which had traction tires already. Powering the 2 A units using ERR DC commanders, it made the set a puller, I run 14 of the K-Line, MTH and Lionel NP Full dome Aluminum cars behind it at the layout with no problem.
I wish I had used the Cruise Commanders but this was my first ERR conversion and I am happy with them. The only mod I had to do was hog out the wire channel for the power wires from the truck. After a repaint on the frames, it looks factory from the outside, draws less amps than a single Pullmor set, and works just fine with the railsounds in the B unit that came with the unit.
