Athearn Genesis G1025 HO Scale 4-6-6-4 Challenger w/Oil Tender Union Pacific UP 3823 DC N Decals There’s also an optional 12

There’s also an optional 12

This body is made from high-quality polycarbonate and is manufactured using a unique molding process that makes it very light weight and durable

round loading hatches are also common

a decal tray to be filled with water and used when applying decals

Athearn Genesis G1025 HO Scale 4-6-6-4 Challenger w/Oil Tender Union Pacific UP 3823 DC N Decals There’s also an optional 12Athearn Genesis G1025 HO Scale 4 6 6 4 Challenger w Oil Tender Union Pacific UP 3823 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