Superior Pine Products Company 2-6-2 "Prairie" Locomotives of 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.

Specifications by Steve Llanso of Sweat House Media
Class3
Locobase ID15486
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 Wheelbase8'
Engine Wheelbase21.33'
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender)46.33'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers46000 lbs
Engine Weight64000 lbs
Tender Light Weight74000 lbs
Total Engine and Tender Weight138000 lbs
Tender Water Capacity3500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)26 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter36"
Boiler Pressure180 psi
Cylinders (dia x stroke)12" x 18"
Tractive Effort11016 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.18
Heating Ability
Firebox Area60 sq. ft
Grate Area13.30 sq. ft
Evaporative Heating Surface551 sq. ft
Superheating Surface
Combined Heating Surface551 sq. ft
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 area10800
Power L13901
Power MT560.88


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