Ingenio Angelina 2-6-6-2 Locomotives in the Dominican_Republic

Class Details by Steve Llanso of Sweat House Media

Class Milan (Locobase 4189)

Data from "Articulated Compound Locomotives for Santo Domingo", Railroad Age Gazette, Volume XLV [45], No 26, (27 November 1908) pp. 1444-1446. See also DeGolyer, Volume 32, p. 314. Works number was 33008.

This was one of the smallest Baldwin-built Mallets delivered. RG commented: "This design is interesting, as an example of a relatively powerful locomotive with flexible wheel base and minimum axle loads."

The Prairie Mallet went into service on a Porcella, Vicini & Company plantation in the DR that had 25-lb rail and a minimum curve radius of 125 ft. A wood (or, more likely, sugar cane) burner, the diminuitive engine sported the requisite cabbage stack and an oversized cab. Each truck was equalized with its adjacent engine set. Tender capacity in wood was 1 1/2 cords.

During this Mallet's construction, someone recorded a note in Baldwin's spec book to the effect that "...last engine [a 2-6-0] arrived with leaky boiler. Special attention is called to the new engine to see that boiler and other details give no cause for complaint."

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID4189
RailroadIngenio Angelina
CountryDominican Republic
Number in Class1
Road Numbers9
Number Built1
BuilderBurnham, Williams & Co
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.83
Engine Wheelbase (ft / m)27 / 8.23
Ratio of driving wheelbase to overall engine wheelbase 0.22
Overall Wheelbase (engine & tender) (ft / m)43.80 / 13.35
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)50,900 / 23,088
Engine Weight (lbs / kg)60,200 / 27,306
Tender Loaded Weight (lbs / kg)24,800 / 11,249
Total Engine and Tender Weight (lbs / kg)85,000 / 38,555
Tender Water Capacity (gals / ML)1200 / 4.55
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)14 / 7
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)184.20 / 12.70
High Pressure Cylinders (dia x stroke) (in / mm)10" x 16" / 254x406
Low Pressure Cylinders (dia x stroke) (in / mm)15" x 16" / 381x406
Tractive Effort (lbs / kg)10,511 / 4767.72
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.84
Heating Ability
Tubes (number - dia) (in / mm)88 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.50 / 3.81
Firebox Area (sq ft / m2)49 / 4.55
Grate Area (sq ft / m2) 9.40 / 0.87
Evaporative Heating Surface (sq ft / m2)550 / 51.12
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)550 / 51.12
Evaporative Heating Surface/Cylinder Volume378.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1731
Same as above plus superheater percentage1731
Same as above but substitute firebox area for grate area9026
Power L12461
Power MT639.56

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