30-1923-1 UNION PACIFIC DRG&W HERITAGE BIG BOY #1989 W/ COAL TENDER-O QuickBooks • Clear red taillights

• Clear red taillights

Factory-equipped with AccuMate® knuckle couplers

and the two crankshafts were linked together to power the locomotive

Compatible with Athearn

30-1923-1 UNION PACIFIC DRG&W HERITAGE BIG BOY #1989 W/ COAL TENDER-O QuickBooks • Clear red taillightsJust 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 &