10-17-2013, 11:20 AM
Chet, I think that your use of RSD- for all of those locos may also be confusing the issue a bit, as Alco's use of the "D" suffix denoted a six axle unit with all axles powered, while RSC-s were also six axle diesels, but were in a 1-A-1 configuration, where the middle axle was unpowered, and was there merely to decrease the axle loading - useful on light rail where extra powered axles weren't need. Up until the appearance of the Century-series, I believe that Alco used the simple RS- designation for all four-axle hood units, and their Canadian MLW subsidiary did likewise.
That said, it's your railroad and whatever designation you chose is entirely up to you.
Regardless of the terminology, those are some great looking locomotives. 
Wayne
That said, it's your railroad and whatever designation you chose is entirely up to you.
Regardless of the terminology, those are some great looking locomotives. Wayne