>> Ed, Which motor/gear combo do your locos use?
I hate to sound stupid, but I have no idea. I just purchased the standard North Yard drive at the time. I did not know about various motors and gears. All this was maybe 15 years ago or so. Memory fades. I can say they look like the pictures you posted recently. A medium-sized Sagami is used, however mine have u-joints instead of rubber tubing. Ed L.