Shannon-Arizona 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 14075)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 208. Works number was 33958 in October 1909.

The S-A had only been incorporated in March 1909 and this Consolidation arrived very shortly afterward. Its remit was to scale the 3.4% grades and very tight 35-degree curves (equates to radii of 166 feet or 51 metres). A few months later, the S-A bought a very similar engine from the Moctezuma Copper Company; see Locobase 13231.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID14,075
Number in Class1
Road Numbers2
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)18.33 / 5.59
Ratio of driving wheelbase to overall engine wheebase 0.60
Overall Wheelbase (engine & tender) (ft / m)44.46 / 13.55
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)101,000 / 45,813
Engine Weight (lbs / kg)112,000 / 50,802
Tender Loaded Weight (lbs / kg)60,000 / 27,216
Total Engine and Tender Weight (lbs / kg)172,000 / 78,018
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1200 / 4.50
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 21
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 965
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)18" x 20" / 457x508
Tractive Effort (lbs / kg)24,641 / 11176.98
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.10
Heating Ability
Firebox Area (sq ft / m2)81.50 / 7.57
Grate Area (sq ft / m2)18.80 / 1.75
Evaporative Heating Surface (sq ft / m2)1720 / 159.79
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1720 / 159.79
Evaporative Heating Surface/Cylinder Volume292.00
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3196
Same as above plus superheater percentage3196
Same as above but substitute firebox area for grate area13,855
Power L13889
Power MT339.56

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Wes Barris