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Loco pulling power... other factors...
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<P>[:I][quote user="joseph2"]Has it been mentioned that during cold weather a steam locomotives power decreases ? I have an old Erie chart which shows an engine will pull 30% less at 0 Fahrenheit then at 38 degrees.Also back in the old days car axles used oil bath friction bearings now days roller bearings are used ,less friction easier to get rolling. Joe[/quote]</P> <P>Joe,</P> <P>You had me stumped for a few minutes. I was thinking the loco should be more thermally efficient at cooler temperature. Then the penny dropped. You were writing about 0 degrees Fahrenheit. Mate that is cold!! It's 30 odd below freezing. I hate to think of all the effects at that sort of temperature.</P> <P>I have lived in the tropics for too long to even imagine. 38 deg F is very cold in my books.</P> <P>How did they keep water in the tender (not ice)?</P> <P>The oil and or grease would be getting to a stage of ineffectiveness, at least before the train got running and friction built up some temperature.</P> <P>Did they by any chance have a graph showing the relative pulling power from say 90 degrees F down to that 0 degree F you mentioned?</P>
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