Missouri & Louisiana 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 115 (Locobase 13184)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 47, p. 259. See also Mississippi Rails entry at http://www.msrailroads.com/Neame_Carson_Sou.htm, last accessed 22 September 2011. Works number was 40082 in June 1913.

Even though the specifications cite 6 and 7% grades on this logging road, Locobase suspects the steepest sections were reserved for the geared Shays. The M & L bought this Prairie about a year before the company was reorganized as Delta Land & Timber. At that point the Louisiana portion of the M & L was renamed the Neame, Carson & Southern Railroad.

DL & T would transfer the 115 to Conroe Timber in Conroe, Texas as their 204 by January 1921. It would then be sold to Foster Lumber Company of Fostoria, Texas in April 1929.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13184
RailroadMissouri & Louisiana
Number in Class1
Road Numbers115
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 9.17'
Engine Wheelbase23.75'
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender)48.67'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers64000 lbs
Engine Weight88000 lbs
Tender Light Weight60000 lbs
Total Engine and Tender Weight148000 lbs
Tender Water Capacity4000 gals
Tender Fuel Capacity (oil/coal)6 tons
Minimum weight of rail (calculated)36 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter46"
Boiler Pressure180 psi
Cylinders (dia x stroke)15" x 20"
Tractive Effort14967 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28
Heating Ability
Firebox Area82 sq. ft
Grate Area14 sq. ft
Evaporative Heating Surface991 sq. ft
Superheating Surface
Combined Heating Surface991 sq. ft
Evaporative Heating Surface/Cylinder Volume242.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2520
Same as above plus superheater percentage2520
Same as above but substitute firebox area for grate area14760
Power L14726
Power MT488.39

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