Yards - Switching
nw-mailing-list at nwhs.org
nw-mailing-list at nwhs.org
Sun Sep 17 17:12:19 EDT 2006
Harry,
At these 2 facilites generally how long and high where the humps?
What motive power was used?
How many cars where in the string to be humped,max ?
Not all the cars where actually on the hump at anyone time, untill closer to
the end right?
thanks for the info,
John Rhodes
On 9/17/06, nw-mailing-list at nwhs.org <nw-mailing-list at nwhs.org> wrote:
>
> John:
>
> I suspect the height and grades in a hump yard are determined by
> length of bowl tracks and tracks in the bowl. The mountain at
> Bellevue certainly was higher than the pimple at the Portsmouth
> time freight hump, but Bellevue had more bowl tracks. Bellevue
> had computerized car retardation and Portsmouth did it with a
> car retarder operator. At Bellevue, a hump engine pushed the cars
> to the apex and bowl crews pulled the classified cars from the
> opposite end. At Portsmouth, the same crew that humped them,
> also pulled them out of the bowl. Despite the computerization and
> the army of clerks that staffed the Bellevue hump, the Portsmouth
> time freight hump was just as efficient. Just don't pull the antics
> that Bison Yard did. The pin-puller uncoupled a cut of 10 liquid
> sugar tanks. The cut went through the designated track and were
> last seen en route to Canada.
> Harry Bundy
>
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