[Non-DoD Source] [RealSTMFC] Increasing slope sheet angle on hoppers
Gatwood, Elden J SAD
There were other roads that modified hoppers for powdered ore traffic, with the rationale that: 1) powdered ore had the tendency to “stick” in place on “standard” (read: 30 degree) sloped slope sheets and hoppers (the interior hopper), and 2) that cars loaded with powdered ore were never loaded to cubic capacity, since ore is so much heavier than coal, thus you were not losing space you could have used.
Different RRs had different responses to this problem. Some went to the jennie/jenny, but that was a lot of money. If you had hoppers you no longer really needed, why not?
From: main@RealSTMFC.groups.io <main@RealSTMFC.groups.io> On Behalf Of spsalso via groups.io
Sent: Thursday, December 17, 2020 12:24 PM
Subject: [Non-DoD Source] [RealSTMFC] Increasing slope sheet angle on hoppers
In 1955, GN changed the slope sheet angle on some of their 73000-73199 hopper cars:
GN later modified these cars for two uses - the first cars were cut down in height, and a hatched roof was added.
These cars were in zinc ore service. The other cars also received hatched roofs but not cut down, and received new
outlets as well. Those cars were in company sand service. The end slope sheets were unchanged as far as I can tell.
On 12/17/2020 1:18 PM, Gatwood, Elden J SAD wrote: