BLI 7231 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific UP 4012 Paragon4 Era_2011 + Dry Weight: 6

Dry Weight: 6

Max Brake or Max Throttle

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Designed for under-layout mounting

Laydown Rear Shock Mounting Provides More Tuning Options

BLI 7231 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific UP 4012 Paragon4 Era_2011 + Dry Weight: 6BLI 7231 N Scale Big Boy 4 8 8 4 Steam Loco Union Pacific UP 4012 Paragon4 Often called the largest steam loco ever made, and certainly a contender for the Worlds Most Famous Locomotive, the Big Boy was forged under some of the most strenuous demands ever placed on a locomotive. The UP Railroad needed a locomotive that could be used to pull a 3,600 ton train over Sherman Hill and the 1. 14% grade from Ogden to Wasatch, Utah without the need for