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[quote]QUOTE: Originally posted by Modelcar Futuremodel: That I really don't know.....I simply have counted up to 140 trailers at times when I've watched the train headed south. 2 6-axle engines up front running the show....I don't know what their limit may be in length of consist..... [/quote] We can guestimate the length of 140 trailers, assume they're all 53's, that's about 7500'. How long are the NS sidings in your area? Regarding possible push operations, I spoke with the VP of Sales at RailRunner, and he infered that RailRunner chassis can handle push-pull with DPU's (that was one of the things we proposed for the aborted BNSF Stampede Pass service). Of course, RailRunners use the dual tongue bogies which allow longitudinal forces to flow freely through the consist, that's why RailRunners can be set up facing forward or backwards. RoadRailers use the "elephant-style" tongue on trailer connection, with the lead trailer resting its tailgate on the bogie. There may be a problem with pushing behind such a setup, maybe a rearward force could concievably push a trailer forward off the bogie.
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