Re: Car designs and the USRA
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On Tue, Jan 31, 2023 at 9:55 AM Eric Lombard <elombard@...> wrote:
ATSF 32001On Tue, Jan 31, 2023 at 9:51 AM Eric Lombard <elombard@...> wrote:following are photos of the three cars...PRR 38000On Tue, Jan 31, 2023 at 9:42 AM Eric Lombard <elombard@...> wrote:I have been following this thread with interest.Here are additional data about the 1915-1917 committee and its final box car designs.ARA Program XM 4940.6-1917 three ARA sample test cars of differing construction but same dimensions built by different builders. Would seem to be in anticipation of USRA designs. IL 40-6, IW 8-6, IH 9-0 or 9-1.
Marks Builder Construction
IC 175001 PSC? | |/|/|/[ ]\|\|\| |
ATSF 32001 PUL | [ ] |
PRR 38000 PRR | : : : [ ] : : : |Eric LOn Mon, Jan 30, 2023 at 5:07 PM Dennis Storzek via groups.io <email@example.com> wrote:On Sun, Jan 29, 2023 at 11:52 PM, Tony Thompson wrote:
There was an ARA committee working toward a “recommended standard” box car, from 1915 to 1917. The USRA Car Committee simply took over their work and made a few tweaks.The tweaks were more than minor, and not just the ends (which was indeed minor). The DS car had the frame narrowed, the connection between car posts and side sill revised, and lost its Z bar eaves. The SS car had custom pressings substituted for the structural shapes used on the ARA car, and also appears to have lost the Z bar eave. The all steel car seems to have had the troublesome channel side sill substituted for the angle section that the ARA eventually went back to fifteen years later after thousands of X29 and similar cars needed patching. It almost looks like the ARA team got sent home, to be replaced by the second string. I don't know who exactly was on the USRA design team, but at least the DS and all steel car bear an uncanny resemblance to NYCS practice of the time.