20-30145-1 UNION PACIFIC BIG BOY AS-BUILT WITH COAL TENDER #4014-O QuickBooks 8 inch clearance

8 inch clearance

Highly detailed one-piece body simulates double-sheathed construction

single-throw on/off switches in parallel

Today's DCS Digital Command System features an all-in-one WiFi Track Interface Unit (WTIU) that brings true interactive wireless control to a model railroad

or in Conventional mode with a standard transformer

20-30145-1 UNION PACIFIC BIG BOY AS-BUILT WITH COAL TENDER #4014-O QuickBooks 8 inch clearanceJust months before Pearl Harbor, the American Locomotive Company delivered the first Big Boy to the Union Pacific Railroad. The UP's Department of Research and Mechanical Standards had designed the locomotive for a specific task: to pull a 3600 ton train unassisted over the Wasatch Mountains in Utah. While the Big Boy is often cited as the biggest steam locomotive ever built, in fact it is not. The Norfolk & Western's Y6 and A, the Duluth Missabe &