San Jose 2-6-0 Locomotives in the Dominican_Republic

Class Details by Steve Llanso of Sweat House Media

Class La Borda (Locobase 14479)

Data from DeGolyer, Vol 54, p. 243. Works number was 45935 in July 1917.

Locobase can't say for sure if this was the first Type E superheater to be installed, but it must have one of the earliest. The double-loop superheater served a little plantation Mogul and its separate specification within the Baldwin spec shows that only two of the tubes in the boiler were as small as 2" (50.8 mm) diameter. Six more tubes measured 3" (76.2 mm) and the 24 flues that held the twelve double-looped elements had the same diameter.

The firebox burned anthracite coal and the smokebox was topped by a cabbage stack. Six inch (254 mm) piston valves admitted the steam to the cylinders.

At the time of La Borda's arrival in Santo Domingo District, the San Jose, while still one of the smallest plantations in the DR, was expected to grow considerably in the next couple of years. It offered what must have seemed impossibly tight curve radii of 85 feet/25.9 metres.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassLa Borda
Locobase ID14479
RailroadSan Jose
CountryDominican Republic
Number in Class1
Road Numbers3
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)12.75 / 3.89
Ratio of driving wheelbase to overall engine wheelbase 0.55
Overall Wheelbase (engine & tender) (ft / m)35.85 / 10.93
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)37,000 / 16,783
Engine Weight (lbs / kg)43,000 / 19,504
Tender Loaded Weight (lbs / kg)41,000 / 18,597
Total Engine and Tender Weight (lbs / kg)84,000 / 38,101
Tender Water Capacity (gals / ML)1800 / 6.82
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.50 / 3
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)185 / 12.80
High Pressure Cylinders (dia x stroke) (in / mm)11" x 16" / 279x406
Tractive Effort (lbs / kg)9225 / 4184.39
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.01
Heating Ability
Tubes (number - dia) (in / mm)2 - 2" / 51
Flues (number - dia) (in / mm)30 - 3" / 76
Flue/Tube length (ft / m)10.50 / 3.20
Firebox Area (sq ft / m2)31 / 2.88
Grate Area (sq ft / m2) 7.50 / 0.70
Evaporative Heating Surface (sq ft / m2)287 / 26.66
Superheating Surface (sq ft / m2)90
Combined Heating Surface (sq ft / m2)377 / 26.66
Evaporative Heating Surface/Cylinder Volume163.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1388
Same as above plus superheater percentage1721
Same as above but substitute firebox area for grate area7111
Power L17239
Power MT1293.99

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