One more thing. No dummy locomotive will roll like a boxcar. Dummy locos have axles passing through sleeve bearings in a die-cast truck block just like a powered loco, just without gears. So they're heavy and don't roll particularly well compared to other rolling stock with pointed-end axles rotating in slippery plastic inserts or depressions molded into the backs of truck sideframes. But if your powered loco is a typical twin motored unit, chances are the drag won't be noticed as long as the rest of the train isn't heavy enough to tax the motive power (which usually doesn't happen till the train is longer than most home layouts can accommodate anyway)
---PCJ
