Parral & Durango 2-6-0 "Mogul" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 12359)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 22, p. 134. Works numbers were 16946 in July 1899, 17681in April 1900, 18644 in January 1901, 19041 in May 1901.

A quartet of Moguls that ranked in the top quarter of 2-6-0s on the 3-foot gauge, the P & D engines came 1 by 1 to the small railroad of Colorado State (not the US state) that served silver mines over 70 km (43.5 miles) of track.

2 and 4 eventually served the Cia Industrial y Azucarera SA sugar-refinery line in San Juan Covarrubias, Mexico. 1 may also have operated for the same line. The 5 went to another silver line, the Potosi & Rio Verde.

Specifications by Steve Llanso of Sweat House Media
Class1
Locobase ID12,359
RailroadParral & Durango
CountryUSA
Whyte2-6-0
Number in Class4
Road Numbers1, 2, 4, 5
Gauge3'
Number Built4
BuilderBurnham, Williams & Co
Year1899
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)17.83 / 5.43
Ratio of driving wheelbase to overall engine wheebase 0.62
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)60,000 / 27,216
Engine Weight (lbs / kg)69,000 / 31,298
Tender Loaded Weight (lbs / kg)53,000 / 24,040
Total Engine and Tender Weight (lbs / kg)122,000 / 55,338
Tender Water Capacity (gals / ML)2400 / 9.09
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)33 / 16.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)40 / 1016
Boiler Pressure (psi / kPa)165 / 11.40
High Pressure Cylinders (dia x stroke) (in / mm)14" x 20" / 356x508
Tractive Effort (lbs / kg)13,745 / 6234.63
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.37
Heating Ability
Firebox Area (sq ft / m2)73.91 / 6.87
Grate Area (sq ft / m2)15.24 / 1.42
Evaporative Heating Surface (sq ft / m2)1048 / 97.40
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1048 / 97.40
Evaporative Heating Surface/Cylinder Volume294.10
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2515
Same as above plus superheater percentage2515
Same as above but substitute firebox area for grate area12,195
Power L14376
Power MT482.37