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

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
Locobase ID12,359
RailroadParral & Durango
Number in Class4
Road Numbers1, 2, 4, 5
Number Built4
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)11
Engine Wheelbase (ft)17.83
Ratio of driving wheelbase to overall engine wheebase 0.62
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)60,000
Engine Weight (lbs)69,000
Tender Loaded Weight (lbs)53,000
Total Engine and Tender Weight (lbs)122,000
Tender Water Capacity (gals)2400
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)33
Geometry Relating to Tractive Effort
Driver Diameter (in)40
Boiler Pressure (psi)165
High Pressure Cylinders (dia x stroke) (in)14" x 20"
Tractive Effort (lbs)13,745
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.37
Heating Ability
Firebox Area (sq ft)73.91
Grate Area (sq ft)15.24
Evaporative Heating Surface (sq ft)1048
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1048
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

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