Quote:
Originally Posted by Sooner or later
I just watched a vid of 844 cranking along at 75 mph. It was chugging away!
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844 pulled the train from Denver to Cheyenne for "Cheyenne Frontier Days" since it's been restored.... went down to watch; it's beautiful.
Even then there's a diesel 'helper' with it, like there is with Big Boy... just in case, maybe?
BTW, 844 is a fast passenger engine, 4014 is a high torque freight up steep grades engine; designed to haul long freight consists up the Sierra Nevadas
844 large diameter drivers = high gearing
4014 small diameter drivers = low gearing.
Driver size is the 'gear ratio' with steam engines.