BLI 7231 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific UP 4012 Paragon4 F104 To make it easy on

To make it easy on race technical inspection during spec races

MAXX MUSCLE

precision machined flywheels

Voltage: 2S / 2 Cell / 7

BLI 7231 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific UP 4012 Paragon4 F104 To make it easy onBLI 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