The Pacific-type locomotive evolved as the need for power and speed increased. First, the four-wheel leading truck delivered stability at the faster speeds. Second, six tall drivers provided pulling power and speed. Last, a two-wheel trailing truck provided support for a larger firebox. The sum of this design was the 4-6-2 USRA Pacific.
The USRA designation for light and heavy locomotives was a function of the track's ability to withstand weight. Excessive axle weight could damage the rails, loosen fastenings, and also cause damage to the locomotive. The USRA deemed a maximum of 54,000 pounds per axle as a light locomotive. The USRA Light Pacific weighed in at 277,000 lbs, with a 73 inch driver diameter and a boiler pressure of 200 lb/in.
NOTICE: Due to insufficient boiler diameter in the USRA Heavy and Light Pacifics, these units will not have smoke units.
NEW Paragon3 Sound & Operation System FEATURING ROLLING THUNDER with Authentic Sounds and Prototypical Operation in both DC and DCC environments
Factory Installed Engineer/Fireman Figures
Locomotive Composition: ABS Body with Die Cast Chassis
Tender Composition: ABS Body with Die Cast Chassis
Couplers: (2) Operating Kadee or Compatible
Compatible Tracks: Code 70, 83, 100 Rail
Equipped with Traction Tires
Minimum Operating Radius: 18" or greater