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500-horsepower units were designed for versatility they were equally at home working road freights or switch runs
The Prism pins are positioned with the knife edge pointed front to back and side to side for maximum grip and stay sharp even as they wear down
47" x 38" oval of snap-fit E-Z Track®
6061-T6 aluminum (charcoal gray-anodized)
Truck: Tangent 70-ton “Birdsboro foundry” Barber S-2 trucks with prototype-specific rotating bearing caps and separate brake beam part
Athearn Genesis G999 HO Scale 4-6-6-4 Challenger w/Oil Tender Union Pacific UP 3820 DCC/Sound Code 83 500-horsepower units were designed forAthearn 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