NW Mailing List nw-mailing-list at
Sun Aug 28 22:54:38 EDT 2011


I am an old head but not an old steam man with that kind of railroad

I think what you say is probably what occured. I have heard and read about
steam engines sometimes "walked " at night from a roundhouse stall just from
what you said. This could have been what occured here. If the engine was
coupled to a train, then the drivers could have spun, or "slipped", while
the engineer was oiling. Being tied to a train, the locomotive could not
move but the drivers slipped when the steam pressure built up in the
cylinders for whatever the reason.

Bud Jeffries

----- Original Message -----
From: "NW Mailing List" <nw-mailing-list at>
To: <nw-mailing-list at>
Sent: Sunday, August 28, 2011 12:30 PM

I should know better than to venture an answer relating to steam, but
here goes. Maybe the throttle was cracked open, and the engine brakes
not firmly set, so that eventually enough pressure built up the
pistons to overcome the brakes just for a moment? Just enough for a
sudden partial rotation of the drivers?

OK, old heads, feel free to pile on now.

- Marty Swartz

What gets us into trouble is not what we don't know. It's what we know
for sure,… that just ain't so. - Mark Twain
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