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Ahh, GP40-2, my old nemesis about Big Boys [:)]. You probably remember this from awhile ago. To be perfectly honest, the stuff about the 5-1/2 mile train is from a book whose title I will get tommorrow. You might be right about that post-starting tractive effort, but you couldn't take the H-8 at the speeds a Big Boy went without either severely damaging thet track or derailing. The 7-mile train bit I believe I got off of www.steamlocomotive.com, though I'm not sure. By the way, there are a number of different figures floating around for drawbar horsepower on a Yellowstone and Big Boy. Guess what? The most reliable figures I could find for BOTH was 6000 HP! Cordially yours, Daniel Parks
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