Wheels of Time 50161 N Scale 53'6" General Service Flatcar Western Pacific WP 2234 UDR Prototypes in service from early

Prototypes in service from early 1970s to the present

Road Number: SF-4

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Wheels of Time 50161 N Scale 53'6" General Service Flatcar Western Pacific WP 2234 UDR Prototypes in service from earlyWheels of Time 50161 N Scale 53'6" General Service Flatcar Western Pacific WP 2234 These 53' 6" flatcars were constructed with a welded fish belly steel frame in contrast to the cast steel GSI frame. The fish belly frame provided an optimal distribution of tension and compression forces from the center of the car to the bolsters. Think of it as a bridge. In addition, fabricating a welded frame was far less labor intensive than an equivalent riveted