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Hello everybody,what about considerations, that a steamer has great variances about HP-output, es. at higher (+40mph) speeds? An engine, that was put in service as a 5000HP one, could produce, under feasible circumstances, say 6000HP, couldn't it?Look at the 1990ties Challenger APL-run:It took a 28 5-unit stack-train from Cheyenne down to Nebraska. Consist weighted 7500tons, max. speeds were 60-70mph (on level track as well, listen H. Fogg's comment and look how fast the trains passed the grain-towers near Chappell, Nebr.).Was this a 5000HP engine, as the Challenger-Class was suppossed to be, or did it 6000HP?Furthermore, see the jitters at the Ally's drawbar-test at higher speeds!Kind regardsLars
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