Shannon-Arizona 2-8-0 "Consolidation" Locomotives of 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.

Specifications 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)11
Engine Wheelbase (ft)18.33
Ratio of driving wheelbase to overall engine wheebase 0.60
Overall Wheelbase (engine & tender) (ft)44.46
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)101,000
Engine Weight (lbs)112,000
Tender Loaded Weight (lbs)60,000
Total Engine and Tender Weight (lbs)172,000
Tender Water Capacity (gals)3000
Tender Fuel Capacity (oil/coal) (gals/tons)1200
Minimum weight of rail (calculated) (lb/yd)42
Geometry Relating to Tractive Effort
Driver Diameter (in)38
Boiler Pressure (psi)170
High Pressure Cylinders (dia x stroke) (in)18" x 20"
Tractive Effort (lbs)24,641
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.10
Heating Ability
Firebox Area (sq ft)81.50
Grate Area (sq ft)18.80
Evaporative Heating Surface (sq ft)1720
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1720
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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