Sociedad Agricola Pomalca Ltd 0-6-0 Locomotives in Peru
Class Details by Steve Llanso of Sweat House Media
Class San Salvador (Locobase 15093)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 66, pp. 173. See also the "Municipalidad Distrital de Pomalca" website at [
]. Works numbers were 51047 in January 1919.
The Fox Brothers brokerage bought this little wood-burning six-coupled for its Peruvian customer. The fuel car trailing the San Salvador carried only 1 1/2 cords of wood. The water rode in the two side tanks.
The Pomalca website tell us that the Gutierrez La Torre family acquired Pomalca in 1869 and brought a structure in every respect: organizational, administrative, economic and technical. It was this entity that was reorganized in May 1896 as the GutiTrrez y Hermanos company and later in June 1902 as the Sociedad Agrfcola Pomalca.
The next two decades saw more improvements in adminstration, organization, and production.
But a drop in world prices led the owners to sell the company in 1920 to the Pomalca Viuda De Piedra e Hijos (Widow and Sons of Piedra Del Castillo). They increased sugar production and the company grew apace.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | San Salvador |
| Locobase ID | 15093 |
| Railroad | Sociedad Agricola Pomalca Ltd |
| Country | Peru |
| Whyte | 0-6-0T |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | 70 cm |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1919 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.17 / 1.58 |
| Engine Wheelbase (ft / m) | 5.17 / 1.58 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 5.17 / 1.58 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 28,500 / 12,927 |
| Engine Weight (lbs / kg) | 28,500 / 12,927 |
| Tender Loaded Weight (lbs / kg) | 11,000 / 4990 |
| Total Engine and Tender Weight (lbs / kg) | 39,500 / 17,917 |
| Tender Water Capacity (gals / ML) | 300 / 1.14 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 16 / 8 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 28 / 711 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 14" / 229x356 |
| Tractive Effort (lbs / kg) | 5508 / 2498.39 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.17 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 50 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.31 / 2.53 |
| Firebox Area (sq ft / m2) | 23 / 2.14 |
| Grate Area (sq ft / m2) | 5.30 / 0.49 |
| Evaporative Heating Surface (sq ft / m2) | 187 / 17.37 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 187 / 17.37 |
| Evaporative Heating Surface/Cylinder Volume | 181.41 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 848 |
| Same as above plus superheater percentage | 848 |
| Same as above but substitute firebox area for grate area | 3680 |
| Power L1 | 2187 |
| Power MT | 507.53 |