San Carlos Milling Company 0-6-0 Locomotives in Philippines


Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 14741)

Data from DeGolyer, Vol 63, pp. 201. 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 43719 in July 1916.

Negros Occidental in the western part of the island of Negros was a hotbed of sugar manufacturing in the Philippines. In the late 'teens, SCM, which opened in January 1914, was producing 1,500 tons of cane sugar per day. This small six-coupled engine was brokered by C Brewer & Company.


Class 5 (Locobase 14742)

Data from DeGolyer, Vol 78, pp. 352. 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 59302 in July 1926.

Locobase 14741 shows the little six-coupled that worked on the SCM's tramway in the early days. Ten years after that locomotive's arrival, the next Baldwin arrived. It was almost twice as big (although tiny by main-line standards). The specs describe 30-35 lb/yard (15-17.5 kg/metre), 1/2-mile (0.8-km) grades of 1%, and very tight curve radii of 328 feet (100 metres).

Principal Dimensions by Steve Llanso of Sweat House Media
Class45
Locobase ID14741 14742
RailroadSan Carlos Milling CompanySan Carlos Milling Company
CountryPhilippinesPhilippines
Whyte0-6-0ST0-6-0
Number in Class11
Road Numbers45
Gauge3'3'
Number Built11
BuilderBaldwinBaldwin
Year19191926
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.75 / 2.06 8.50 / 2.59
Engine Wheelbase (ft / m) 6.75 / 2.06 8.50 / 2.59
Ratio of driving wheelbase to overall engine wheelbase11
Overall Wheelbase (engine & tender) (ft / m)29.58 / 9.0234.10 / 10.39
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)27,000 / 12,24744,000 / 19,958
Engine Weight (lbs / kg)27,000 / 12,24744,000 / 19,958
Tender Loaded Weight (lbs / kg)35,000 / 15,87646,000 / 20,865
Total Engine and Tender Weight (lbs / kg)62,000 / 28,12390,000 / 40,823
Tender Water Capacity (gals / ML)1500 / 5.682100 / 7.95
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.10 / 14 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)15 / 7.5024 / 12
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 83833 / 838
Boiler Pressure (psi / kPa)160 / 11170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)9" x 16" / 229x40612" x 16" / 305x406
Tractive Effort (lbs / kg)5341 / 2422.6410,089 / 4576.30
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.06 4.36
Heating Ability
Tubes (number - dia) (in / mm)47 - 1.75" / 4494 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.61 / 2.939 / 2.74
Firebox Area (sq ft / m2)30.50 / 2.8356 / 5.20
Grate Area (sq ft / m2) 5.70 / 0.5310.50 / 0.98
Evaporative Heating Surface (sq ft / m2)236 / 21.92440 / 40.88
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)236 / 21.92440 / 40.88
Evaporative Heating Surface/Cylinder Volume200.32210.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation9121785
Same as above plus superheater percentage9121785
Same as above but substitute firebox area for grate area48809520
Power L129023214
Power MT710.87483.11

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