Re: NORTHERN PACIFIC 41' FLAT CAR
Charlie: Yes the contours of those side sills do look familiar. If so, that would make this a 36-foot car, not 41 ft as I initially stated, rebuilt from NP boxcar series 38300-38999 (Standard Steel Car in 1903
The following photo shows two additional work flats coupled to the original flat car on the same June 1962 date (Evaro, MT):
The middle flat shows a different construction, with a deeper, steeply dropping fishbelly portion of the side sill. On other photos the visible details of this construction suggest a structural plate fastened over, or possibly replacing, the original side sills. It looks to be about the same length as the first car. The third car with the A-frame rack resembles the first in side sill shape, but has more closely spaced stake pockets.
Anyone interested can find some scattered diagram sheets for 36, 40, and 41-foot NP company service flats indexed on this page of the nprha web site :
And some diagram sheets for the original boxcars are at:
--- In STMFC@yahoogroups.com, Charlie Vlk <cvlk@...> wrote: