Re: What defines an AAR boxcar?

Kurt Laughlin <fleeta@...>

----- Original Message -----
From: Dave Nelson

I guess it comes down to are we trying to describe the 1944 standard
specifically or post war in general.

----- Original Message -----

Well, here's were I'm coming from: I have a need for thirteen 40 foot and five 50 foot non-PRR XMs on my layout. My first cut was based on the numbers of Class I XM/XME/XIs for the period, which gave me one each ATSF, B&O, C&O, CB&Q, CNW, GN, MILW, MP, NP, NYC, SOU, SP, and UP 40 footers and one each ATSF, IC, MP, NYC, and SP 50 footers. Step 2 was to look at the period ORER and see which XM was most numerous on each road. For ease of use I went by the cubic capacity recapitulations for each road. What I've found is that while the "typical" AAR car may be the most common for a road, the practice of listing the cubic capacity as anything between 3712 and 3723 cu ft tends to dilute the total so that something like a PS-1 might appear to be most common. I figure if I can see what - if anything - really distinguishes a 3713 car from a 3715 car, I can get a truer picture of what really was the most likely to appear.


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