South Western of Arizona 2-8-0 "Consolidation" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 12522)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 24, p. 42. Works numbers were 19497, 19500 in August 1901; 19673-19675 in November.

All of this class were converted in 1916 to 0-8-0 switchers. As such, they were taken into the Southern Pacific in 1924.

Principal Dimensions by Steve Llanso of Sweat House Media
Class2
Locobase ID12,522
RailroadSouth Western of Arizona (EP&SW)
CountryUSA
Whyte2-8-0
Number in Class1
Road Numbers2-6 / 50-54 / 209-213
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1901
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.25 / 4.34
Engine Wheelbase (ft / m)22.83 / 6.96
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)154,000 / 69,853
Engine Weight (lbs / kg)170,000 / 77,111
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)270,000 / 122,470
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)64 / 32
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 1295
Boiler Pressure (psi / kPa)190 / 13.10
High Pressure Cylinders (dia x stroke) (in / mm)22" x 28" / 559x711
Tractive Effort (lbs / kg)42,915 / 19465.94
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.59
Heating Ability
Firebox Area (sq ft / m2)200 / 18.59
Grate Area (sq ft / m2)37 / 3.44
Evaporative Heating Surface (sq ft / m2)2630 / 244.42
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2630 / 244.42
Evaporative Heating Surface/Cylinder Volume213.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7030
Same as above plus superheater percentage7030
Same as above but substitute firebox area for grate area38,000
Power L14759
Power MT272.51