Texas & Pacific 2-6-0 "Mogul" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class C-1 (Locobase 8491)

Data from T&P 1 - 1922 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 3224-3228 in March 1883, 3233-3237 in April,

By the time the 1922 diagram book was published, this class of Moguls had been relegated to switching duty. When originally delivered, however, they undoubtedly served as freight and mixed-traffic locomotives all over the system.

Specifications by Steve Llanso of Sweat House Media
Locobase ID8491
RailroadTexas & Pacific (T&P)
Number in Class20
Road Numbers141-160
Number Built20
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.70 / 3.87
Engine Wheelbase (ft / m)20.19 / 6.15
Ratio of driving wheelbase to overall engine wheebase 0.63
Overall Wheelbase (engine & tender) (ft / m)43.94 / 13.39
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)70,000 / 31,752
Engine Weight (lbs / kg)88,000 / 39,916
Tender Loaded Weight (lbs / kg)58,000 / 26,308
Total Engine and Tender Weight (lbs / kg)146,000 / 66,224
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1500 / 5.70
Minimum weight of rail (calculated) (lb/yd / kg/m)39 / 19.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 1295
Boiler Pressure (psi / kPa)145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)19" x 22" / 483x559
Tractive Effort (lbs / kg)19,193 / 8705.81
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.65
Heating Ability
Firebox Area (sq ft / m2)120 / 11.15
Grate Area (sq ft / m2)22.70 / 2.11
Evaporative Heating Surface (sq ft / m2)1070 / 99.44
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1070 / 99.44
Evaporative Heating Surface/Cylinder Volume148.21
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3292
Same as above plus superheater percentage3292
Same as above but substitute firebox area for grate area17,400
Power L12851
Power MT269.37