Reply to "Steam limits"

quote:
Originally posted by ReadingFan:

A rough estimate is 10 mph for every inch of driving wheel diameter.

Ummm . . .

so a locomotive with 80-inch drivers could go 800mph?

Call me skeptical

Just to add on to what others have said, RPM is more of an indicator of top speed than MPH. Check the RPM on all the rod engine examples given, and the top speed will correlate to somewhere around 525-550 RPM. Above that, the forces associated with all those flailing rods tend to result in airborne pieces of steel.

11/30/118:29 AM

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