Superior Pine Products Company 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 15486)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 80, pp. 180+. Works number was 58803 in

This wood-burning logging Prairie was bought by the Varn Turpentine and Cattle Company, the latter based in Statenville, Ga The latter's name leads Locobase to wonder if they ever dipped the latter in the former. VTCC was organized in 1919 with J E Varn leading a group of investors who put up $100,000. But what was VTCC's connection to the name on the tender?

Superior Pine Products was located in Fargo, Ga and is described in its history (http://superiorpine.com/History.html, last accessed 14 October 2013) as having been organized as a subsidiary of Paper Makers Chemical (PMC), based in Pennsylvania and Michigan. SPP's role was to produce rosin and turpentine products by renewably harvesting pine from the Suwannee Forest.

Principal Dimensions by Steve Llanso of Sweat House Media
Class3
Locobase ID15,486
RailroadSuperior Pine Products Company
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers3
GaugeStd
Number Built1
BuilderBaldwin
Year1920
Valve GearWalschaert
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)46.33 / 12.75
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)46,000 / 20,412
Engine Weight (lbs / kg)64,000 / 28,123
Tender Loaded Weight (lbs / kg)74,000 / 21,772
Total Engine and Tender Weight (lbs / kg)138,000 / 49,895
Tender Water Capacity (gals / ML)3500 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) / 4.50
Minimum weight of rail (calculated) (lb/yd / kg/m)26 / 13
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)12" x 18" / 305x457
Tractive Effort (lbs / kg)11,016 / 4996.78
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.18
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 L13901
Power MT560.88