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Paul,  <o:p></o:p> I guess I will have to read the article, and also read up on that speed run.  I think Trains covered that event in some long ago back issue.  But I must say that I am skeptical of Hankey’s conclusion, as I understand your explanation of it.  But setting that aside, I do not understand what reason there is to doubt a speed claim of 106 mph from a 4-4-2 locomotive and train of that era.  I could understand the doubt if there were some type of timekeeping or mileage error that could be shown.   <o:p></o:p> But specifically relating to your explanation of Hankey’s conclusion, why would there need to be a sudden acceleration to get up to speed within a limited distance before entering the measured mile?  Do we even know that that was the case?  I would assume that if one were to clock a top possible speed in a measured mile, one would make sure the train was running as fast as possible before entering that measured mile.  <o:p></o:p> Also, I don’t understand the conclusion that if the run were credible, everybody else would have modified their locomotives to do the same thing.  Was this particular locomotive modified in some unique way to achieve this speed?   <o:p></o:p> If it was specially built to set this speed record, it would not necessarily follow that the company would then run their passenger trains that fast on a routine basis; nor would it follow that other competing lines would build the same design for the purpose of running their trains that fast.  Locomotive speed potential is one thing, and safe speed limits is another.         <o:p></o:p> For the time being, I won’t go into my intuitive reasons for questioning the motives of this debunking.
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