Athearn Genesis G1012 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3907 DCC/Sound Body - 10.5 WB Powerhobby 3S 11

Powerhobby 3S 11

The IC cars feature their as-built 1970 appearance that includes Gypsum crossover platforms

Late production units (which are the prototypes for these models) had a shorter nose and some differences in the radiator intakes

while operating as assets of Chessie successor CSX

Electro-Motive Division's F7 was the zenith of the “covered wagon

Athearn Genesis G1012 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3907 DCC/Sound Body - 10.5 WB Powerhobby 3S 11Athearn Genesis G1012 HO Scale 4 6 6 4 Challenger w Coal Tender Union Pacific UP 3907 DCC Sound ALCO constructed the first 4 6 6 4 locomotives in the world, numbered 3900 to 3914, for the Union Pacific Railroad in 1936. These huge engines were named the Challenger Simple Articulated, or CSA 1, class. The railroad received 25 near copies, classified as CSA 2, the following year. Unlike compound Mallet engines that crawled along with drag freights, the