Athearn Genesis G999 HO Scale 4-6-6-4 Challenger w/Oil Tender Union Pacific UP 3820 DCC/Sound Code 83 Truck: Tangent 70-ton “Birdsboro foundry”

Truck: Tangent 70-ton “Birdsboro foundry” Barber S-2 trucks with prototype-specific rotating bearing caps and separate brake beam part

We can’t wait to see this thing making its way through scale competitions

Standard Tail Sign

Relaxed Flying Experience

Athearn Genesis G999 HO Scale 4-6-6-4 Challenger w/Oil Tender Union Pacific UP 3820 DCC/Sound Code 83 Truck: Tangent 70-ton “Birdsboro foundry”Athearn 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