I wonder if anyone could create a group of Silversides Gondolas. These were used on unit trains by SR from about 1960 until they ran out their 50 year lives around 2010 and as far as I know all have been scrapped. These were made of aluminum with a gross weight of 286K lbs. When I hired on at the test department in 1965, one of my first assignments was to see if deflection of a bridge had caused a unit train derailment near Columbiana, AL. No, it was the to & fro rocking of the cars on jointed rail at resonance speed of around 15-18 miles per hour - varied by car and how much load it had. Eventually the quick fix was to add extension pads to the center plates and Stucki Snubbers to each spring nest, so if anyone does these, then they will need a black box like thing visible in each spring nest, about 4"x6" of visible part. I am working on an improved version of the CSX Kingsport Sub. and thought of this as I was adding about 15 miles of SR track from parallel to the Copper Creek trestle, under CSX at the north end of Clinch Mtn. Tunnel, and interchanging with CSX at Frisco, TN. I plan to incorporate some of this into a simulation of the Appalachia Div. as well. I have some pictures of these cars and I can probably get basic sketches of them.
Jerry Sullivan
Jerry Sullivan







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