The DS/SS split - Thanks and an update


laramielarry <ostresh@...>
 

Many thanks to the following people answered my request for help in
pinning down the split between double sheathed and single sheathed
box and auto cars for the U.S. fleet in July, 1950: Jim Brewer, Al
Brown, Brian Ehni, Richard Hendrickson, and Dennis Storzek. Thanks to
their efforts, over 8,000 cars have been removed from "Unknown"
status and categorized into DS, SS, steel, or "Other". Here is the
current breakdown:

U.S. box, auto, and ventilator cars in interchange service, July,
1950 ORER:
Type_____ %_____ number
DS _____ 9.0% __ 64,629
SS ____ 21.1% _ 150,612
Steel _ 66.5% _ 475,872
Other __ 0.7% ___ 4,758
Unknown_ 2.7% __ 19,258
Total __ 100% _ 715,129

This means that over 97% of the fleet is categorized; two-thirds of
it is steel and the rest is a combination of DS, SS, or "Other". The
DS/SS split is 30% DS and 70% SS. Nearly all of the "Other" category
consists of the Santa Fe's "panel" cars or the GN's "plywood" cars.
The ORER classifies the "panel" cars as DS, and the "plywood" cars
are often considered DS also, so shifting them would add a little to
the DS side of the ledger.

Later today (if time permits), I'll post the breakdown for several
specific railroads.

*****

Answers have been given for about half of the cars on my "help
needed" list, but the other half still remains.

I will be most appreciative if you can provide me information on the
following car series. Most important is whether the cars are DS, SS,
steel (or steel rebuild), or "other" (if "other", what?). If in
addition you can provide the date when built (and rebuilt, if
appropriate), that would be great! Further information such as
class, sub-category (e.g., "Fowler" or "Ribside") would be nice, but
is not necessary. Of course, references to photographs would be
wonderful. The classification should reflect the status of the
series as of July, 1950. If these cars can be classified, over 98% of
the fleet will be categorized.

Road, AAR, Kind, Series, IL, Door, Capy, Qty
CNW, XM, Box, 63000-64898, 40'6", 6'0", 80000, 515
CNW, XM, Box, 74900-76898, 40'6", 6'0", 80000, 971
CNW, XM, Box, 111000-111998, 40'6", 10'0", 80000, 482
CNW, XMR, Auto, 54000-54798, 40'6", 12'0", 80000, 393
CG, XM, Box, 40300-40699, 39'10", 6'0", 80000, 351
IC, XM, Box, 15500-15796, 40'2", 6'0", 80000, 291
IC, XM, Box, 25000-25499, 40'3", 6'0", 80000, 258
IC, XM, Box, 37500-37993, 40'6", 10'0", 80000, 486
IC, XM, Box, 40250-40499, 50'5", 12'0", 75000, 242
L&N, XM, Box, 13500-13999, 40'6", 6'0", 100000, 244
L&N, XM, Box, 48700-48949, 40'6", 10'0", 100000, 243
MEC, XM, Box, 35301-35650, 40'6", 6'0", 80000, 243
MP, XM, Box, 44000-44410, 40'4", 6'0", 80000, 408
MP, XM, Box, 45251-45494, 40'3", 6'0", 80000, 239
MP, XAR, Auto, 75280-75479, 40'6", 12'1", 80000, 200
MP, XAR, Auto, 75480-75999, 40'6", 12'1", 80000, 338
MP, XAR, Auto, 76150-76999, 40'6", 12'1", 80000, 308
SB&M, XM, Box, 20051-20550, 40'0", 6'0", 80000, 384
SP, XM, Box, 66175-66674, 40'6", 10'7", 100000, 428
T&P, XM, Box, 30000-30316, 40'6", 6'0", 80000, 312

Thanks in advance!

Larry Ostresh
Laramie, Wyoming

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