Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 52, p. 282. Works number was 41648 in August 1914.
The four-coupled double-ender wheel arrangement was only rarely seen in any form, still less when pulling a separate tender. The most enthusiastic standard-gauge operator was the Paris-Lyons-Mediterranee, which bought several classes of 2-4-2 express engines in the late 1800s.
Every so often, however, Baldwin would sell such an engine (albeit of much smaller proportions) to short lines or logging roads. The specs show that both trucks enjoyed 4 inches of lateral play to each side to allow the engine snake around sharp curves. Four axles spread the weight out over the 30 lb/yard (15 kg/metre) rail and the modest 0.5% grade offered little challenge. A more usual choice was the 2-6-0 Mogul for its tractive power, but Scott Lumber may have wanted better bidirectional tracking.
Scott Lumber was based in Ayers, SC. The 15 moved on to Central Timber Saw Mills, then Chapman Storm, Holly Hill Lumber. The latter stored the engine in 1957. In 1968, Six-Gun Territory, a theme park in Ocala, Fla, bought the 15 for its tourist road.
The engine was last reported to be under restoration at Savannah, Georgia's, Roundhouse Railroad Museum.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 15 |
Locobase ID | 14271 |
Railroad | Scott Lumber |
Country | USA |
Whyte | 2-4-2 |
Number in Class | 1 |
Road Numbers | 15 |
Gauge | Std |
Number Built | 1 |
Builder | Baldwin |
Year | 1914 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 6 / 1.83 |
Engine Wheelbase (ft / m) | 19.33 / 5.89 |
Ratio of driving wheelbase to overall engine wheelbase | 0.31 |
Overall Wheelbase (engine & tender) (ft / m) | 38.08 / 11.61 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 34,000 / 15,422 |
Engine Weight (lbs / kg) | 52,000 / 23,587 |
Tender Loaded Weight (lbs / kg) | 41,000 / 18,597 |
Total Engine and Tender Weight (lbs / kg) | 93,000 / 42,184 |
Tender Water Capacity (gals / ML) | 1800 / 6.82 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3 / 3 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 28 / 14 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 42 / 1067 |
Boiler Pressure (psi / kPa) | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 18" / 305x457 |
Tractive Effort (lbs / kg) | 8393 / 3807.01 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.05 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 94 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 9.50 / 2.90 |
Firebox Area (sq ft / m2) | 46 / 4.27 |
Grate Area (sq ft / m2) | 10.20 / 0.95 |
Evaporative Heating Surface (sq ft / m2) | 509 / 47.29 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 509 / 47.29 |
Evaporative Heating Surface/Cylinder Volume | 215.68 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 1632 |
Same as above plus superheater percentage | 1632 |
Same as above but substitute firebox area for grate area | 7360 |
Power L1 | 3507 |
Power MT | 454.80 |