Wheels of Time 50187 N Scale 53'6" General Service Flatcar Southern Pacific SP 3 Pack Era_1954-1967 ScaleTrains Rivet 39053 HO Scale

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railroads began contracting with outside firms to build new coaling towers

Wheels of Time 50187 N Scale 53'6" General Service Flatcar Southern Pacific SP 3 Pack Era_1954-1967 ScaleTrains Rivet 39053 HO ScaleWheels of Time 50187 N Scale 53'6" General Service Flatcar Southern Pacific SP 3 Pack 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