St Louis Water Works 2-4-2 "Columbian" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 13623)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 27, p. 87. Works number was 24404 in June 1904.

This was an industrial saddle tank that served a variety of basic-materials producers. The specs call for the locomotive to haul "five 100,000 lbs cap[acity] loaded cars on the tracks of the St Louis Water Works at a speed of not less than 12 miles per hour." A sketch of the profile shows no grade steeper than 1% and a road measuring 7.3 miles (11.8 km) long from Bissell's Point to Chain of Rocks.

Whatever the requirements, the engine served for almost 25 years before it went to locomotive rebuilder/reseller Birmingham Rail & Locomotive. BR&L sold the 1 to Alabama Asphaltic Limestone Company of Margerum, Ala in April 1928, had it returned in 1933, and sold it again in November 1933 to DeBardeleben Colliery of Coal Valley, Ala.

Two years later, the 12 went to T R Miller Mill in Brewton as their #12 and remained with that company for 20 years shuttling between a lumber mill and a telephone-pole treatment mill before being sold to the W T Smith Lumber Company. In 1967, WTL sold the engine to the Pensacola Historical Restoration and Preservation Commission, who put it on display at the Marine Museum.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID13,623
RailroadSt Louis Water Works
Number in Class1
Road Numbers1
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)21.58 / 6.58
Ratio of driving wheelbase to overall engine wheebase 0.32
Overall Wheelbase (engine & tender) (ft / m)21.58 / 6.58
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,000 / 25,401
Engine Weight (lbs / kg)74,000 / 33,566
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)74,000
Tender Water Capacity (gals / ML)1000 / 3.79
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)45 / 1143
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)14" x 22" / 356x559
Tractive Effort (lbs / kg)13,032 / 5911.22
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.30
Heating Ability
Firebox Area (sq ft / m2)71.10 / 6.61
Grate Area (sq ft / m2)12.70 / 1.18
Evaporative Heating Surface (sq ft / m2)873 / 81.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)873 / 81.10
Evaporative Heating Surface/Cylinder Volume222.72
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2032
Same as above plus superheater percentage2032
Same as above but substitute firebox area for grate area11,376
Power L13761
Power MT296.13

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Wes Barris