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Posted by: Jerald_Mniller
Posted on: Mar 21st, 2017, 11:07am
As a Newbie here I first want to thank everyone, especially Norm, for the vast amount of knowledge I have gained about the ATSF!. At 76 years of age I am trying to learn, and model, as much as possible while I still have time. I've learned that the 4-8-4's pulled the heavyweight passenger cars, but cannot find what Steam wheel configurations and locomotive size were used to pull freight and/or livestock. I tried to locate Larry Brasher's (first volume) book entitled "Santa Fe Locomotive Development" without having to re-mortgage the house, to no avail!. Can anyone help?. Thanks again everyone! ~Jerald
Posted by: Norm_Anderson
Posted on: Mar 21st, 2017, 9:31pm
Hi again, Jerald,
The answer may depend on what time period you wish to model. But as a general rule, freight locomotives had a single leading axle, while passenger locomotives had two leading axles for greater stability around curves at higher speeds.
In the early 20th Century, passenger trains were often pulled by 4-6-0 "Ten-Wheeler" locomotives, while freight trains were handled by 2-8-0 "Consolidation" types.
In the 1920s and early 1930s, passenger trains in the Midwest were most commonly pulled by 4-6-2 "Pacific" types, while freights were handled by 2-6-2 "Prairie" types. In the West, where more power was needed for mountain grades, passenger trains were assigned 4-8-2 "Mountain" types, and freights were pulled by 2-8-2 "Mikado" types.
In the late 1930s and into the 1940s, passenger trains were assigned 4-6-4 "Husdson" types in the Midwest and 4-8-4 "Northern" types in the West, while freights were handled by 2-10-2 "Santa Fe" types. The most massive freight steam locomotives were the 2-10-4 "Texas" types. (Santa Fe also experimented with articulated "Mallet" locomotives, but they were never commonplace.)
Based on the title of your post, am I correct in assuming you might want to model the late 1940s, with hotshot livestock trains and Green Fruit Extras (solid blocks of reefers)? If so, then the 2-10-2 is the locomotive of choice. Just the right blend of fast and powerful. They got the job done. Over steep grades like Cajon Pass, they would often couple two of them on the head end, with a third cut in just ahead of the caboose. They'd climb through the Pass like artillery on wheels.
Evan Werkema has compiled an impressive roster of Santa Fe steam power, which will give greater detail to this thumbnail summary. His list is arranged by locomotive type, and gives number of units built, in what year, Santa Fe road numbers, and year retired. I think you will find it helpful.