Central Union 2-6-0 Locomotives in Cuba


Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 14404)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 54, pp. 127+. Works numbers were 42931 in February 1916 and 43723 in July.

Originally ordered to be produced as stock in December 1914, the 7 was a duplicate of the Panama Railroad's Mogul design (of which 40 were produced in 1907 and are described in Locobase 12183) was taken off the shelf in early 1916 and sold to Agramonte, Cuba-based CU.

Although a sugar road, the CU also operated freight service for which this 2-6-0 was a handy size. The 8 joined the 7 five months later. At the time of their delivery, these were the two biggest Baldwin Moguls in Cuba.


Class Enrique (Locobase 14888)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 64, pp. 209. Works numbers were 54069 in November 1920.

Unlike the two earlier Baldwin plantation Moguls shown in Locobase 14404, this oil-burning 2-6-0 was of moderate size and power.

The CU was based at San Luis in Oriente Province. When it was nationalized after the 1959 Revolucion, the central was renamed for Rafael Reyes and the 3 renumbered 1581.

Principal Dimensions by Steve Llanso of Sweat House Media

Class7Enrique
Locobase ID14404 14888
RailroadCentral UnionCentral Union
CountryCubaCuba
Whyte2-6-02-6-0
Number in Class21
Road Numbers7-83
GaugeStdStd
Number Built21
BuilderBaldwinBaldwin
Year19161920
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13 / 3.9611 / 3.35
Engine Wheelbase (ft / m)20.50 / 6.2518.75 / 5.71
Ratio of driving wheelbase to overall engine wheelbase 0.63 0.59
Overall Wheelbase (engine & tender) (ft / m)56.78 / 17.3146.62 / 14.21
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)107,000 / 48,53486,000 / 39,009
Engine Weight (lbs / kg)123,000 / 55,792101,000 / 45,813
Tender Loaded Weight (lbs / kg)80,000 / 36,28786,500 / 39,236
Total Engine and Tender Weight (lbs / kg)203,000 / 92,079187,500 / 85,049
Tender Water Capacity (gals / ML)4000 / 15.154000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)6 / 62000 / 7570
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.5048 / 24
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 137246 / 1168
Boiler Pressure (psi / kPa)180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x61017" x 24" / 432x610
Tractive Effort (lbs / kg)24,548 / 11134.8023,070 / 10464.39
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.36 3.73
Heating Ability
Tubes (number - dia) (in / mm)252 - 2" / 51211 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11 / 3.3510.75 / 3.28
Firebox Area (sq ft / m2)151 / 14.03107 / 9.94
Grate Area (sq ft / m2)23.10 / 2.1520.40 / 1.90
Evaporative Heating Surface (sq ft / m2)1590 / 147.711285 / 119.42
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1590 / 147.711285 / 119.42
Evaporative Heating Surface/Cylinder Volume201.88203.81
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation41583672
Same as above plus superheater percentage41583672
Same as above but substitute firebox area for grate area27,18019,260
Power L148243984
Power MT298.18306.39

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