Athearn Genesis G999 HO Scale 4-6-6-4 Challenger w/Oil Tender Union Pacific UP 3820 DCC/Sound FMS 6x6 "HGC" High Gravity Compound Weighs

"HGC" High Gravity Compound Weighs nearly the same as Metal Trucks

Road numbers 111225

Each model has interior seats

USB or Tempurature Port (Set the desired use of the side port)

Athearn Genesis G999 HO Scale 4-6-6-4 Challenger w/Oil Tender Union Pacific UP 3820 DCC/Sound FMS 6x6 "HGC" High Gravity Compound WeighsAthearn Genesis G999 HO Scale 4 6 6 4 Challenger w Oil Tender Union Pacific UP 3820 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