Sound-equipped Big Boy in HO depicts a hard-working Union Pacific steamer

摘要

With a coat of factory-applied grime and rust, this HO scale Big Boy looks like it's seen years of hard use. Since the late 1960s Rivarossi has manufactured Big Boy 4-8-8-4 locomotives in HO scale. This is the first Rivarossi Big Boy to be weathered and to include a dual-mode Digital Command Control sound decoder.rnPrototype. The 4-8-8-4 Big Boy is generally acknowledged to be the largest steam locomotive ever produced. The Rivarossi model represents one of the first group of Big Boys (nos. 4000 to 4019) delivered to the Union Pacific by Alco in 1941. The UP received five more Big Boys in 1944.