Mercedita 2-6-0 Locomotives in Cuba


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 13627)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 44, p. 282. Works number was 39006 in January 1913.

Among Cuban American Sugar's holdings in Cuba was the Mercedita some 40 miles out of Havana. By 1912, the mill had made 84,558 bags and would reach 112,000 bags in 1913 from 10,000 acres of sugar-cane.

Although this locomotive was labeled for the Mercedita and given the number 3, it apparently changed its number very quickly to 20 because another #3 (Locobase 13629) came along before the end of the year.


Class 3 (Locobase 13629)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 49, p. 34. Works number was 40595 in September 1913.

This is a little curious. At the beginning of 1913, Cuban American Sugar bought a medium-size skinny-gauge Mogul for its Mercedita plantation in Cuba and gave it #3; see Locobase 13627. Eleven months later, the Mercedita ordered another Mogul with much smaller dimensions for the same road and bearing the same number. Que pasa?

The 3 would toil on the Mercedita rails for decades. After the 1959 Revolucion and expropriation, the Central was renamed for Augusto Cesar Sandino and the 3 was renumbered 1210.

Its final destination was the Lenin Park Railway in northern Havana, where it regained its original number and operated tourist trains.

Principal Dimensions by Steve Llanso of Middle Run Media
Class33
Locobase ID13627 13629
RailroadMerceditaMercedita
CountryCubaCuba
Whyte2-6-02-6-0
Number in Class31
Road Numbers3 / 203 / 1210
Gauge3'3'
Number Built31
BuilderBaldwinBaldwin
Year19131913
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.50 / 3.20 7.25 / 2.21
Engine Wheelbase (ft / m)17.50 / 5.3313.92 / 4.24
Ratio of driving wheelbase to overall engine wheelbase 0.60 0.52
Overall Wheelbase (engine & tender) (ft / m)43.71 / 13.3233.12 / 10.09
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)64,000 / 29,03040,250 / 18,257
Engine Weight (lbs / kg)74,000 / 33,56648,150 / 21,840
Tender Loaded Weight (lbs / kg)52,000 / 23,58722,000 / 9979
Total Engine and Tender Weight (lbs / kg)126,000 / 57,15370,150 / 31,819
Tender Water Capacity (gals / ML)2600 / 9.851000 / 3.79
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)5 / 5 2.50 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)36 / 1822 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)40 / 101633 / 838
Boiler Pressure (psi / kPa)160 / 1100180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)15" x 18" / 381x45712" x 16" / 305x406
Tractive Effort (lbs / kg)13,770 / 6245.9710,682 / 4845.28
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.65 3.77
Heating Ability
Tubes (number - dia) (in / mm)210 - 1.75" / 4492 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.17 / 2.8011.25 / 3.43
Firebox Area (sq ft / m2)98.40 / 9.1442 / 3.90
Grate Area (sq ft / m2)13.80 / 1.28 8.20 / 0.76
Evaporative Heating Surface (sq ft / m2)972 / 90.30577 / 53.60
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)972 / 90.30577 / 53.60
Evaporative Heating Surface/Cylinder Volume264.02275.50
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation22081476
Same as above plus superheater percentage22081476
Same as above but substitute firebox area for grate area15,7447560
Power L142423720
Power MT438.37611.27

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