3rd Rail 4023 O UP BRASS 4-8-8-4 Big Boy Steam Loco & Tender w/TMCC 3 Rail #4023 EX/Box

Here is a 3rd Rail 4023 UP BRASS 4-8-8-4 Big Boy Steam Loco & Tender w/TMCC - 3 Rail #4023. This locomotive is a scale length model of UP‘s legendary 4-8-8-4 steam locomotives from 1941. The locomotive features a decorative bell, a smoke unit, metal side rods and metal wheels. The tender features an operating coupler, die-cast trucks, metal wheels and axles.The Big Boy was originally designed to be a massive freight hauler packing a whopping 24 wheels on the locomotive and a massive 14-wheeled tender in tow. Designing and producing the 4-8-8-4 model was a daunting task initially with several challenges presenting themselves in production. Early upgrades would include a 25,000 gallon water tank, a 50,000 pound capacity for coal, and a whopping 135,375 pounds of tractive power! A reduction in wheel diameter from 69in to 68in would see an increase in traction, and in 1940 the decision to equip each unit with a larger firebox would be made as well. Later upgrades like an increase in bo