Dave - My GG1 had about 16 cars in tow. The first two were heavy diecast hoppers. The train just glided effortlessly up and down our grade of just under 2 percent.
Finished wiring the sidings on the west side of the layout. Still have to provide labeling. The siding between tracks 3 and 4 on the trestle is "shared" and is wired in a "cab control" configuration with a SPDT switch. Here's a shot of the innards.
Panel for the east side will require a bit more work since it'll incorporate control of the turntable.
