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[quote user="Hugh Jampton"][quote] user="BuyCSXrailroadStock!"] Greenbrier and Gunderson are making Light Wieght Aluminum Coal Cars.... Must be a reason for this. The fuel savings on a 100 car 10,000 ton freight train? Also I have seen Allunimun Hoppers....So it is only a a matter of time before we have Allnimim Intermodal Flats.. [/quote] Not fuel savings. With coal for every pound you remove from the tare weight of the vehicle it allows an extra pound of coal, given that railroads are limited by the axle load. Intermodal cars don't even come close to reaching the limit, and until they rais the maximum load of a comtainer to the point where aluminum cars become necessary they'll be made of goos old cheaper steel. [/quote] True.  The weight savings that comes from using aluminum over steel in intermodal apps is focussed on the boxes/trailers themselves, since highway weight limits do affect the cargo vs tare equation.
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