Athearn Genesis G1009 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3911 DCC/Sound HO EL RV style air conditioner

RV style air conditioner

Technology: SAFE Select

How piggyback containers and terminals work

The rest came from Great Northern and Frisco

Athearn Genesis G1009 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3911 DCC/Sound HO EL RV style air conditionerAthearn Genesis G1009 HO Scale 4 6 6 4 Challenger w Coal Tender Union Pacific UP 3911 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