Athearn Genesis G1024 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3907 DC Roadname_Florida East Coast 39 in (137mm)

39 in (137mm)

Steel CVA drive shafts with captured joints

Kit - 2-1/2 x 3-1/4 x 2-5/16" 6

Aluminum Lower Suspension Arms (2pcs)

For over 45 years

Athearn Genesis G1024 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3907 DC Roadname_Florida East Coast 39 in (137mm)Athearn Genesis G1024 HO Scale 4 6 6 4 Challenger w Coal Tender Union Pacific UP 3907 DC 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