Pampanga Sugar Mills 2-8-2 Locomotives in Philippines


Class Details by Steve Llanso of Sweat House Media

Class Gumain (Locobase 14750)

Data from DeGolyer, Vol 63, pp. 225. See also a listing of Sugar Centrals in the Philippines in the American Chamber of Commerce of the Philippines Journal (January 1922), p. 30. Works number was 55088 in September 1921.

This Luzon Island sugar central needed more power on a light rail system (40 lb/yard; 20 kg/metre) that bent around curves with radii as tight as 150 feet (45.7 m). When the company bought this logging Mikado tank, it handled the curves with a lead truck that swung 4" (102 mm) each way and a rear truck that had 3 3/4" (95 mm) play to each side. Other concessions to the tight, light right of way were the short stroke for 14" (356 mm) cylinders and the flangeless second and third drivers on each side. Although a coal-burner, the 7 was fitted with a Rushton Improved cabbage stack.

[link] contains a account -- Views from the Pampang by Alex Castro -- that describes this region of Luzon's railroad net. The PASUDECO, the sugar company that opened a large mill in 1921 and owned the locomotive in this entry, was served by branch lines that radiated from several main stations, particularly San Fernando. The peak years were the 1920s, when the development was processing 1,660 tons of sugar cane a day.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassGumain
Locobase ID14750
RailroadPampanga Sugar Mills
CountryPhilippines
Whyte2-8-2T
Number in Class1
Road Numbers7
Gauge3'6"
Number Built1
BuilderBaldwin
Year1921
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.05
Engine Wheelbase (ft / m)22.08 / 6.73
Ratio of driving wheelbase to overall engine wheelbase 0.45
Overall Wheelbase (engine & tender) (ft / m)22.08 / 6.73
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)73,500 / 33,339
Engine Weight (lbs / kg)98,500 / 44,679
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1800 / 6.82
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.50 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)32 / 813
Boiler Pressure (psi / kPa)180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)14" x 16" / 356x406
Tractive Effort (lbs / kg)14,994 / 6801.17
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.90
Heating Ability
Tubes (number - dia) (in / mm)140 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10 / 3.05
Firebox Area (sq ft / m2)68 / 6.32
Grate Area (sq ft / m2)12.60 / 1.17
Evaporative Heating Surface (sq ft / m2)704 / 65.40
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)704 / 65.40
Evaporative Heating Surface/Cylinder Volume246.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2268
Same as above plus superheater percentage2268
Same as above but substitute firebox area for grate area12,240
Power L13516
Power MT421.85

All material Copyright © SteamLocomotive.com
Wes Barris