2-8-0 Steam Locomotives in Cuba

Central Ulacia / Central Unidad


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 14887)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 64, p. 207. Works number was 54011 in November 1920.

The Central Ulacia was located in Santa Clara Province. It was named for the brothers who built the mill in 1913-1914 on their own land near Rodrigo and between Santo Domingo and Sagua. They were probably familar with this oil-burning plantation Consolidation design.

The 3 was later sold to the Central Andrieta. After the 1959 Revolucion and nationalization, the 3 was renumbered 1345 and the CA was renamed Mal Tiempo.


Class 4 (Locobase 14903)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 64, pp. 285. Works number was 54066 in November 1920.

This oil-burning plantation Consolidation used 11" (279 mm) piston valves to supply steam to the cylinders. It was sold to the Cuban American Sugar Company, which soon moved it from its CU railway in Santa Clara Province to the Central Tinguaro in Matanzas.

Principal Dimensions by Steve Llanso of Middle Run Media
Class34
Locobase ID14887 14903
RailroadCentral UlaciaCentral Unidad
CountryCubaCuba
Whyte2-8-02-8-0
Number in Class11
Road Numbers3 / 13454
Gauge2'6"Std
Number Built11
BuilderBaldwinBaldwin
Year19201920
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.83 / 314.50 / 4.42
Engine Wheelbase (ft / m)17.17 / 5.2322.17 / 6.76
Ratio of driving wheelbase to overall engine wheelbase 0.57 0.65
Overall Wheelbase (engine & tender) (ft / m)41.12 / 12.5352.91 / 16.13
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)64,500 / 29,257118,000 / 53,524
Engine Weight (lbs / kg)72,000 / 32,659134,000 / 60,781
Tender Loaded Weight (lbs / kg)44,000 / 19,958110,000 / 49,895
Total Engine and Tender Weight (lbs / kg)116,000 / 52,617244,000 / 110,676
Tender Water Capacity (gals / ML)2200 / 8.335000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1000 / 37852400 / 9084
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.5049 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 91450 / 1270
Boiler Pressure (psi / kPa)160 / 1100180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x50820" x 24" / 508x610
Tractive Effort (lbs / kg)14,809 / 6717.2629,376 / 13324.75
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.36 4.02
Heating Ability
Tubes (number - dia) (in / mm)114 - 2" / 51128 - 2" / 51
Flues (number - dia) (in / mm)18 - 5.375" / 137
Flue/Tube length (ft / m)14 / 4.2712.75 / 3.89
Firebox Area (sq ft / m2)60 / 5.58142 / 13.20
Grate Area (sq ft / m2)11 / 1.0229.70 / 2.76
Evaporative Heating Surface (sq ft / m2)906 / 84.201312 / 121.93
Superheating Surface (sq ft / m2)258 / 23.98
Combined Heating Surface (sq ft / m2)906 / 84.201570 / 145.91
Evaporative Heating Surface/Cylinder Volume254.25150.34
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation17605346
Same as above plus superheater percentage17606201
Same as above but substitute firebox area for grate area960029,650
Power L132497467
Power MT444.21558.03

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