Re: 1950 ORER


Tony Higgins
 

I am doing this based on the 1955 ORER. I am listing the top 5 most
populous cars based on cubic capy listed in the recap of data in the
back of each RR section. I am listing the top 20 railroads and trying
to bias the proportions to the number of exchange points for my home
RR -also found in the recap section. I realize this is not a perfect
system since a given cubic capy may represent several different car
types but number series and inside dimensions can help stratify the
sub-types. Conversely, different builders/lots of the same design can
appear in different capy groups. Again, using rosters from sources
like RPCYC, Westerfield, Sunshine PDS, etc. help tease out where cars
of interest belong. I want to use this to guide my roster towards
cars most likely to appear and avoid over representing less likely
cars. I have already built some cars that I would not have with this
new information but I'll keep them anyway to add a bit of randomness
in the mix!

Tony Higgins


--- In STMFC@..., "Mike Aufderheide" <mononinmonon@...>
wrote:

Larry,

I'm a member of the STMFC group and have enjoyed your posts on the
breakdown of car construction and quantities. I have a printout of
a
file I believe you posted of the 1950 ORER that I have been taking
notes on. I am unable to find this files electronic source
however.
Could you e-mail it to me directly?

Based on the Gilbert/Nelson idea of boxcar distribution it should
be
possible to come up with a list of cars most likely to appear at a
given time and place. My goal is to parce through the list and come
up with a list of must-have cars. For example there were about
714,000 boxcars total in 1950. I want to have a 200 boxcar fleet
on
my layout so I need to know which cars represented at least 3,570
cars or 0.5% of the total. I've done the work by hand and want to
add it to the spreadsheet. Hopefully there are some questions that
the STMFC group can help with and those who would find this useful.

Best Regards,

Mike Aufderheide
Chicago

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