Reply to "Steam limits"

BlystovskiOGR Forum Member SUPPORTING MEMBER

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

The rule of thumb is 1 MPH per inch of driving wheel diameter.

That being said, I'm pretty sure Rich has mentioned having his favorite 69"-drivered Berkshire near the 79 MPH passenger limit a few times ('93 Akron to Pittsburgh if memory serves), so it really is a rule of thumb and not an absolute maximum.

11/30/117:45 AM

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