Guanica Centrale 2-8-0 Locomotives in USA-Puerto_Rico


Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 14760)

Data from DeGolyer, Vol 63, pp. 257. Works numbers were 53957-53958 in November 1920.

These small, oil-fired plantation Consolidations augmented the power available to Puerto Rican sugar processor that operated them. Their use of piston valves (8"/203 mm) in diameter) to supply saturated steam was unusual, but their 40 lb/yard (20 kg/metre) rail weight was not. Maximum grades were held to a modest 1.04% and maximum curves amounted to 16 degrees.

The 8 would later work for the American Railroad of Puerto Rico as their 20.

Principal Dimensions by Steve Llanso of Sweat House Media

Class7
Locobase ID14760
RailroadGuanica Centrale
CountryUSA-Puerto Rico
Whyte2-8-0
Number in Class2
Road Numbers7-8
GaugeMetre
Number Built2
BuilderBaldwin
Year1920
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.75 / 3.28
Engine Wheelbase (ft / m)17.17 / 5.23
Ratio of driving wheelbase to overall engine wheelbase 0.63
Overall Wheelbase (engine & tender) (ft / m)46.31 / 14.12
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)81,000 / 36,741
Engine Weight (lbs / kg)87,500 / 39,689
Tender Loaded Weight (lbs / kg)66,500 / 30,164
Total Engine and Tender Weight (lbs / kg)154,000 / 69,853
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1500 / 5678
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 17
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 965
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)16" x 20" / 406x508
Tractive Effort (lbs / kg)18,324 / 8311.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.42
Heating Ability
Tubes (number - dia) (in / mm)212 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.83 / 3
Firebox Area (sq ft / m2)95 / 8.83
Grate Area (sq ft / m2)14.80 / 1.38
Evaporative Heating Surface (sq ft / m2)1042 / 96.84
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1042 / 96.84
Evaporative Heating Surface/Cylinder Volume224.09
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2368
Same as above plus superheater percentage2368
Same as above but substitute firebox area for grate area15,200
Power L13306
Power MT359.92

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