Sessions Foundry Company 2-4-2 "Columbian" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 14327)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 53, pp. 109. Works number was 44347 in October 1916.

The specifications advise that the locomotive was "to handle two big standard cars, total weight of cars and lading 160 to 170 tons" for its Bristol, Connecticut owner. The Sessions Foundry was described in 1909 as the largest and best-equipped foundry east of Chicago.

Specifications by Steve Llanso of Sweat House Media
Class3
Locobase ID14327
RailroadSessions Foundry Company
CountryUSA
Whyte2-4-2ST
Number in Class1
Road Numbers3
GaugeStd
Number Built1
BuilderBaldwin
Year1916
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase7'
Engine Wheelbase21.42'
Ratio of driving wheelbase to overall engine wheebase 0.33
Overall Wheelbase (engine & tender)21.42'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers62500 lbs
Engine Weight86500 lbs
Tender Light Weight
Total Engine and Tender Weight86500 lbs
Tender Water Capacity1000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)52 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure180 psi
Cylinders (dia x stroke)14" x 22"
Tractive Effort14994 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.17
Heating Ability
Firebox Area60 sq. ft
Grate Area14.20 sq. ft
Evaporative Heating Surface889 sq. ft
Superheating Surface
Combined Heating Surface889 sq. ft
Evaporative Heating Surface/Cylinder Volume226.80
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2556
Same as above plus superheater percentage2556
Same as above but substitute firebox area for grate area10800
Power L14004
Power MT282.47


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