Missouri & Louisiana 2-6-2 "Prairie" Locomotives in 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.

Principal Dimensions by Steve Llanso of Sweat House Media
Class115
Locobase ID13,184
RailroadMissouri & Louisiana
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers115
GaugeStd
Number Built1
BuilderBaldwin
Year1913
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.80
Engine Wheelbase (ft / m)23.75 / 7.24
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender) (ft / m)48.67 / 14.83
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)64,000 / 29,030
Engine Weight (lbs / kg)88,000 / 39,916
Tender Loaded Weight (lbs / kg)60,000 / 27,216
Total Engine and Tender Weight (lbs / kg)148,000 / 67,132
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)36 / 18
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 1168
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)14,967 / 6788.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28
Heating Ability
Firebox Area (sq ft / m2)82 / 7.62
Grate Area (sq ft / m2)14 / 1.30
Evaporative Heating Surface (sq ft / m2)991 / 92.07
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)991 / 92.07
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 area14,760
Power L14726
Power MT488.39