Ingenio San Luis 2-4-0 Locomotives in the Dominican_Republic


Class Details by Steve Llanso of Sweat House Media

Class Mendoza (Locobase 13503)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 33, p. 20. Works numbers were 34090 in November 1909, 37066 in October 1910, 37307 in November, and 40805 in November 1913.

Just how small were these little sugar-plantation six-wheeler wood-burners? Their tenders weighed significantly more than the engines themselves.

Frame & Company bought the first locomotive for the San Luis, which operated it for 30 years. All later operated on the Central Ozama.


Class Ozama (Locobase 14176)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 49, p. 65. Works number was 40805 in September 1913.

Bigger younger sister to the three six-wheelers (Locobase 13503) that were delivered to this island ingenio in 1909, the Ozama was ordered through Muller, Schall and Company.

The Ozama was originally designed to burn wood. An extended note in the specs dated 22 October 1913 says that those "wood burning detail parts" were to be delivered with the engine. Fitting it to burn coal as well called for several changes: "Provide extended smoke box, cleaning hole & cap left side and under netting and deflector plate. Single high exhaust [in place of the single low exhaust], cleaing pipe and straight stack [instead of the flared, 9" diameter Radley & Hunter stack] . Plain bar grates." Another change that would seem to have little to do with the fuel: "Headlight bracket on top of smoke box."

Like the other engines, the 6 toiled on the line (renamed the Central Ozama in 1939) for decades

Principal Dimensions by Steve Llanso of Middle Run Media
ClassMendozaOzama
Locobase ID13503 14176
RailroadIngenio San LuisIngenio San Luis
CountryDominican RepublicDominican Republic
Whyte2-4-02-4-0
Number in Class41
Road Numbers2-4, 66
Gauge2'6"2'6"
Number Built41
BuilderBaldwinBaldwin
Year19091913
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 3.67 / 1.12 3.75 / 1.14
Engine Wheelbase (ft / m) 9.50 / 2.90 9.75 / 2.97
Ratio of driving wheelbase to overall engine wheelbase 0.39 0.38
Overall Wheelbase (engine & tender) (ft / m)26 / 7.92
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)16,450 / 746224,000 / 10,886
Engine Weight (lbs / kg)19,650 / 891328,000 / 12,701
Tender Loaded Weight (lbs / kg)33,500 / 15,19520,000 / 9072
Total Engine and Tender Weight (lbs / kg)53,150 / 24,10848,000 / 21,773
Tender Water Capacity (gals / ML)1200 / 4.55700 / 2.65
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)14 / 720 / 10
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)28 / 71130 / 762
Boiler Pressure (psi / kPa)150 / 1030160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)8" x 14" / 203x3569" x 14" / 229x356
Tractive Effort (lbs / kg)4080 / 1850.665141 / 2331.92
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.03 4.67
Heating Ability
Tubes (number - dia) (in / mm)59 - 1.5" / 3880 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 7.73 / 2.36 8.08 / 2.46
Firebox Area (sq ft / m2)28.30 / 2.6331 / 2.88
Grate Area (sq ft / m2) 5.70 / 0.53 6.50 / 0.60
Evaporative Heating Surface (sq ft / m2)207 / 19.23282 / 26.20
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)207 / 19.23282 / 26.20
Evaporative Heating Surface/Cylinder Volume254.15273.56
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation8551040
Same as above plus superheater percentage8551040
Same as above but substitute firebox area for grate area42454960
Power L129953391
Power MT802.78622.99

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