Lionel 2474101 HO Scale G38B Penn Central 4 Pack #1 Steam Loco - 4-6-0 The UP's Department of Research

The UP's Department of Research and Mechanical Standards had designed the locomotive for a specific task: to pull a 3600-ton train unassisted over the Wasatch Mountains in Utah

The sealed differential comes pre-loaded with thick 1 million weight silicone oil to help prevent unloading and ballooning of the front tires

An acrylic polymer that damps and absorbs vibration

DC Voltage: 4

Lionel 2474101 HO Scale G38B Penn Central 4 Pack #1 Steam Loco - 4-6-0 The UP's Department of ResearchLionel 2474101 HO Scale G38B Penn Central 4 Pack #1 Initially cars were equipped with older trucks traded in from aging H21A hoppers. Beginning as early as 1963, the Pennsylvania began replacing the aging hand me down trucks with newer 77 ton varieties. Cars were reclassified G38B with the change. Since the cars were seldom interchanged, most stayed with friction bearings to the end and PC and Conrail trains wore a mix of colors and lettering designs.