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 ([
], 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 Middle Run Media | |
|---|---|
| Class | 3 |
| Locobase ID | 15486 |
| Railroad | Superior Pine Products Company |
| Country | USA |
| Whyte | 2-6-2 |
| Number in Class | 1 |
| Road Numbers | 3 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1920 |
| Valve Gear | Walschaert |
| 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 wheelbase | 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 / Liters/MT) | / 5 |
| 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 / 1240 |
| 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 | |
| Tubes (number - dia) (in / mm) | 90 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.50 / 3.20 |
| 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 Volume | 233.47 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2394 |
| Same as above plus superheater percentage | 2394 |
| Same as above but substitute firebox area for grate area | 10,800 |
| Power L1 | 3894 |
| Power MT | 559.88 |