BLI 7239 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific (2 Tone Gray) UP 4024 Paragon4 DCC HO Vehicles to give excellent stability

to give excellent stability

Heavy Design keeps center of gravity lower something needed when crawling steep sections

Vanquish SLW Wheel Hubs

Terminals for powering switch machines

BLI 7239 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific (2 Tone Gray) UP 4024 Paragon4 DCC HO Vehicles to give excellent stabilityBLI 7239 N Scale Big Boy 4 8 8 4 Steam Loco Union Pacific (2 Tone Gray) UP 4024 Paragon4 DCC 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