Re: NTS Walthers head scratcher?


Benjamin Hom
 

James Dick asked:
"Could you however put a better dating (by decade, by year if possible) on the statement in your last paragraph of:


'The Accurail car represents cars with late R+3/4 improved Dreadnaught ends; this model, with its 4/4 improved Dreadnaught ends (hopefully with early taper) has more utilty for the steam-to-diesel transition era modeler.'"

Improved Dreadnaught ends evolved over time.  The ones on the first postwar AAR boxcars built after WWII had 3/4 or 4/4 ends (depending on car height) with major corrugations with a "rolling pin" taper (Jeff English's terminology, popularized by John Nehrich).
http://www.steamerafreightcars.com/gallery/boxauto/cmo37662main.html

The end design was later modified with a rectangular top rib c. April 1948.  Again, cars had a narrow or wide top rib, again depending on car height (r+3/4 or R+3/4).
http://www.canadasouthern.com/caso/images/p≤-20682.jpg

Finally, the design was revised with a smoother "banana" taper (Jeff's terminology again) c. 1954.  This is the end found on the Accurail and Front Range models.


Ben Hom

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