Athearn Genesis G1015 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3938 DC Passenger - Head End Athearn RTR 29703 HO Scale

Athearn RTR 29703 HO Scale Bombardier Cab Metrolink As Delivered SCAX 632

the HS-645MG offers one of the strongest gear trains available in any servo

(2) sets of springs

This is a pair of Class 1 Trencher 1

Grow your layout with this Thru Truss Bridge Kit

Athearn Genesis G1015 HO Scale 4-6-6-4 Challenger w/Coal Tender Union Pacific UP 3938 DC Passenger - Head End Athearn RTR 29703 HO ScaleAthearn Genesis G1015 HO Scale 4 6 6 4 Challenger w Coal Tender Union Pacific UP 3938 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