Central Dominicana 2-6-2 Locomotives in the Dominican_Republic

Class Details by Steve Llanso of Sweat House Media

Class Cibao (Locobase 14775)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 63, p. 299. Works number was 53144 in April 1920.

These plantation Prairies (the 19 being named Anacaona) appear to have been relatively straightforward lengthenings of the Baldwin compound Moguls supplied to the CD in 1899 (Locobase 12347). The boiler had a bit more heating surface area, but the firebox area remained about the same. It was shallower, however, and featured more grate area. The driving wheelbase was unchanged as was the adhesion weight. There were a few changes aside from the added trailing truck. outside constant-lead radial valve gear now actuated 6" (152 mm) piston valves. The tender was bigger as well.

The road used 45 lb/yard (22.5 kg/metre) rail, presented 3% maximum grades, and relatively tight curve radii of 182 feet (55.5 metres). The specification required the locomotives' centers of gravity to be "as low as possible."

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID14775
RailroadCentral Dominicana
CountryDominican Republic
Number in Class2
Road Numbers18-19
Number Built2
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.17 / 2.49
Engine Wheelbase (ft / m)21.17 / 6.45
Ratio of driving wheelbase to overall engine wheelbase 0.39
Overall Wheelbase (engine & tender) (ft / m)41.04 / 12.51
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)51,000 / 23,133
Engine Weight (lbs / kg)68,000 / 30,844
Tender Loaded Weight (lbs / kg)40,000 / 18,144
Total Engine and Tender Weight (lbs / kg)108,000 / 48,988
Tender Water Capacity (gals / ML)2000 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)5 / 5
Minimum weight of rail (calculated) (lb/yd / kg/m)28 / 14
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)13" x 16" / 330x406
Tractive Effort (lbs / kg)12,537 / 5686.69
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.07
Heating Ability
Tubes (number - dia) (in / mm)124 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12 / 3.66
Firebox Area (sq ft / m2)50 / 4.65
Grate Area (sq ft / m2)14.60 / 1.36
Evaporative Heating Surface (sq ft / m2)824 / 76.55
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)824 / 76.55
Evaporative Heating Surface/Cylinder Volume335.23
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2628
Same as above plus superheater percentage2628
Same as above but substitute firebox area for grate area9000
Power L14326
Power MT561.01

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