Southern Railway & Navigation 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 30 (Locobase 14061)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist Universitym Volume 45, p. 136. Works number was 40948 in November 1913.

The Southern did not operate the 30 for long before selling it to the F B Williams Cypress Company in January 1916. The engine was to placed in "good condition" using parts supplied by Baldwin's Extra Work Department.

Williams Cypress later sold the 30 to the Orange Grove Plantation and Orange Grove sold it to Sterling Sugar, which operated the little Mogul for years (possibly until 1948).

Principal Dimensions by Steve Llanso of Sweat House Media
Class30
Locobase ID14,061
RailroadSouthern Railway & Navigation
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers30
GaugeStd
Number Built1
BuilderBaldwin
Year1913
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)21.33 / 6.50
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender) (ft / m)43 / 13.11
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)45,000 / 20,412
Engine Weight (lbs / kg)62,000 / 28,123
Tender Loaded Weight (lbs / kg)50,000 / 22,680
Total Engine and Tender Weight (lbs / kg)112,000 / 50,803
Tender Water Capacity (gals / ML)2500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)5 / 4.50
Minimum weight of rail (calculated) (lb/yd / kg/m)25 / 12.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 940
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)12" x 18" / 305x457
Tractive Effort (lbs / kg)10,718 / 4861.61
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.20
Heating Ability
Firebox Area (sq ft / m2)60 / 5.57
Grate Area (sq ft / m2)13.30 / 1.24
Evaporative Heating Surface (sq ft / m2)551 / 51.19
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)551 / 51.19
Evaporative Heating Surface/Cylinder Volume233.85
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2394
Same as above plus superheater percentage2394
Same as above but substitute firebox area for grate area10,800
Power L14009
Power MT589.22