Paxta-Sullana-Piura 2-8-0 Locomotives in Peru

Class Details by Steve Llanso of Sweat House Media

Class Miraflores (Locobase 15103)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 66, pp. 190. See also the Pearcedale Conservation Park Brief Historical Summary of the Railroads in Peru at []. Works number was 54856 in June 1921.

The Peruvian Corporation, Ltd told Baldwin that they preferred Belpaire fireboxes after they took delivery of the Sojo, a 1917 Mogul shown in Locobase 15102. So it's not surprising that the square-shouldered furnace appeared on the Miraflores.

Its railway had a relatively long history with construction beginning in 1872, arriving in La Huaca in 1875. A year later, the line reached Viviate. Sullana (as it was then called) was reached in 1879. Piura took eight more years.

Even though the PC wouldn't officially own the P-P until 1929, it paid for this oil-burning Consolidation. Its firebox's brick arch was supported by two arch tubes measuring 9.6 sq ft (0.9 sq m).

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID15103
Number in Class1
Road Numbers9
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13 / 3.96
Engine Wheelbase (ft / m)20 / 6.10
Ratio of driving wheelbase to overall engine wheelbase 0.65
Overall Wheelbase (engine & tender) (ft / m)45.73 / 13.94
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)97,000 / 43,999
Engine Weight (lbs / kg)107,000 / 48,534
Tender Loaded Weight (lbs / kg)76,500 / 34,700
Total Engine and Tender Weight (lbs / kg)183,500 / 83,234
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1600 / 6056
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)24,786 / 11242.75
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.91
Heating Ability
Tubes (number - dia) (in / mm)241 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.36 / 3.46
Firebox Area (sq ft / m2)124.60 / 11.58
Grate Area (sq ft / m2)16.60 / 1.54
Evaporative Heating Surface (sq ft / m2)1472 / 136.80
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1472 / 136.80
Evaporative Heating Surface/Cylinder Volume208.25
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2988
Same as above plus superheater percentage2988
Same as above but substitute firebox area for grate area22,428
Power L14268
Power MT388.01

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