Marty Fitzhenry posted:Good point D500. Remember guys/gals Weaver made an RS-3 with the chain drive early on. That was nasty as could be.
Thanks for all the good info. My Weaver RS-3 does have the chain drive and unless you are running 072 or higher radius curves it's a poor O gauge drive system. Each truck uses only one roller pickup, IMO, a bad design. .While this engine is not conducive to running on my layout the Lehigh Valley paint scheme on the cab is really nice. The Weaver RS-3 body mold had to end up somewhere and my best guess is that the newer Lionel RS-3's may use a modified version of it. I measured up my K-Line RS-3 and compared it to the Weaver. The differences are extremely small and both mount with screws from below the frame. I am sure that a cab swap can be done with some mods . It just comes down to choosing the closest match for the frame,