British Controlled Oil Fields 0-4-2 Locomotives in Venezuela

Class Details by Steve Llanso of Sweat House Media

Class Zulia (Locobase 15435)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 79, p 169+. See also Purlord Bell, "British Controlled Oilfields, Ltd" in "Petroleum", Venezuela, a Commercial and Industrial Handbook: With a Chapter on the Dutch West Indies, Special Agents Series-No. 212, Department of Commerce (Washington, DC: Government Printing Office, 1922) pp. 99-100. Works numbers were 59444-59445 in August 1926.

The BCOF bought these two tanks to work in the oil fields in Falcon state. (The second of the two engines was named Falcon.) Oil-fired, they used a fuel whose rated gravity was 27 degrees Baume (specific gravity of 0.892). Baldwin's standard arrangement placed the burner at the front end of the firebrick-lined firebox. Firebricks also paved the bottom of the ashpan.

The Bernabe Planas Concession was established by the government in the district of Buchivacoa in 1907 and was taken up by the Venezeulan Falcon Oil Syndicate. Their initial efforts were hampered by inappropriate choices in drilling equipment and by depredations on the work force by aggressive malaria-carrying mosquitos.

But the concession was sizable, covering 6,000,000-7,000,000 (9,375-10,938 sq mi/24,300-28,352 sq km), much of it fronting on the Caribbean Sea.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID15435
RailroadBritish Controlled Oil Fields
Number in Class2
Road Numbers
Number Built2
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 4.50 / 1.37
Engine Wheelbase (ft / m)11 / 3.35
Ratio of driving wheelbase to overall engine wheelbase 0.41
Overall Wheelbase (engine & tender) (ft / m)11 / 3.35
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)25,000 / 11,340
Engine Weight (lbs / kg)35,000 / 15,876
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)35,000 / 15,876
Tender Water Capacity (gals / ML)500 / 1.89
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)100
Minimum weight of rail (calculated) (lb/yd / kg/m)21 / 10.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)9" x 16" / 229x406
Tractive Effort (lbs / kg)6009 / 2725.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.16
Heating Ability
Tubes (number - dia) (in / mm)82 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.50 / 2.59
Firebox Area (sq ft / m2)36 / 3.34
Grate Area (sq ft / m2) 8.40 / 0.78
Evaporative Heating Surface (sq ft / m2)352 / 32.70
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)352 / 32.70
Evaporative Heating Surface/Cylinder Volume298.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1512
Same as above plus superheater percentage1512
Same as above but substitute firebox area for grate area6480
Power L14471
Power MT788.55

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