Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 52, p. 355. See also Mississippi Rails entry at [] . Works number was 42781 in December 1915.
The PSMC's 15 miles of road scaled 4% grades, but faced only 10 degree curves (radii of 574 feet/175 metres). The Pearl River County operation began as the Poplarville Lumber Company in 1890 and headquartered in the Mississippi town of the same name. After various renamings and reincorporations, the assets were sold on 16 July 1910 to the PSMC of Lexington, Kentucky
Spreading the weight over several axles, as many as possible of those being adhesion axles, was a good way to cope with 30 lb/yard (15 kg/metre) rail on this tram road and still haul a decent trainload. A small wood-burning Consolidation met the need and the PSMC paid $8,450 for the 9.
The PSMC's road was abandoned in November 1918 when the saw mill "cut out" (i.e., ran out of local timber to cut) and its owners transferred the equipment to Choctaw, Alabama. The 9 was transferred before that event in June 1917, being sold to the De Kalb & Western of Electric Mills, Miss., as their #49. Later renumbered 502, the engine operated for years before being sold the St Francis Material Company of Forrest City, Ark.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | 9 |
Locobase ID | 14309 |
Railroad | Poplarville Saw Mill Company |
Country | USA |
Whyte | 2-8-0 |
Number in Class | 1 |
Road Numbers | 9 |
Gauge | Std |
Number Built | 1 |
Builder | Baldwin |
Year | 1915 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 12.50 / 3.81 |
Engine Wheelbase (ft / m) | 19.33 / 5.89 |
Ratio of driving wheelbase to overall engine wheelbase | 0.65 |
Overall Wheelbase (engine & tender) (ft / m) | 45.58 / 13.89 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 76,500 / 34,700 |
Engine Weight (lbs / kg) | 87,500 / 39,689 |
Tender Loaded Weight (lbs / kg) | 60,000 / 27,216 |
Total Engine and Tender Weight (lbs / kg) | 147,500 / 66,905 |
Tender Water Capacity (gals / ML) | 3500 / 13.26 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 32 / 16 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 44 / 1118 |
Boiler Pressure (psi / kPa) | 175 / 1210 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x559 |
Tractive Effort (lbs / kg) | 19,040 / 8636.41 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.02 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 140 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 12.08 / 3.68 |
Firebox Area (sq ft / m2) | 92 / 8.55 |
Grate Area (sq ft / m2) | 16.80 / 1.56 |
Evaporative Heating Surface (sq ft / m2) | 972 / 90.30 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 972 / 90.30 |
Evaporative Heating Surface/Cylinder Volume | 189.84 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2940 |
Same as above plus superheater percentage | 2940 |
Same as above but substitute firebox area for grate area | 16,100 |
Power L1 | 3589 |
Power MT | 413.72 |