Rapido Trains HO Scale Santa Fe RDC Set by adam November 3, 2021 Rapido’s new HO scale ATSF (Atchison Topeka & Santa Fe) RDC set, DC-191 and DC-192, take their first run on the Railview Historical Society model railroad. These are the first accurate models ever produced of Santa Fe’s unique rebuilt RDCs. More information: / See also Beautiful Large Private Model Railroad HO Scale Gauge Train Layout at the Crossville MRC - Part 2