On Jul 7, 2020, at 4:01 PM, Brent Greer <studegator@...> wrote:

Friend Jim Brewer recently shared some information on various lots of PS-1 boxcars ordered by the Norfolk and Western.  One of these was for a group of only 5 cars, identified in the data as PS Lot 8160D  for five cars with the cushioned under frames.  The N&W car number series is 53995-53999 and the only information on the diagram is "sliding sill 10" rubber cushion."   My question for the knowledgeable experts in our group is "What type of cushioned under frames were these?"   Did PS have their own proprietary system, or was this something like a Duryea under frame?   And of course, I am interested in how best to model this under frame.