02-11-2018, 09:51 PM
doctorwayne Wrote:While the Southern's Su-class boxcars did have truss rods, they also had steel underframes.
Steel underframes were required on all cars built after Jan. 1, 1927, or re-built after July 1, 1928. All-wood underframes, including steel-girthed centre sills, were prohibited in interchange after Jan. 1, 1940, but truss rods on composite underfames weren't banned from interchange until Jan. 1, 1952.
Wayne
Ray Breyer did a quite extensive search on 36 footer and how long they survived.
http://designbuildop.hansmanns.org/accur...type-data/
Basically, most stuff was scrapped by 1950 and only a few roads stuck with them up to 1952 or 1954 (depending which banned was in effect - brake gear or underframe). Cars that survived that era were in MoW or updated oddities (melon cars are a good example). I'm seriously thinking about moving my era from 1952 to 1948 or 1952 to have more choices.
Matt
Proudly modelling Quebec Railway Light & Power Company since 1997.
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Hedley-Junction Club Layout: http://www.hedley-junction.blogspot.com/
Erie 149th Street Harlem Station http://www.harlem-station.blogspot.com/