Seattle Southeastern 2-6-2 "Prairie" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 13040)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 29, p. 285 . Works number was 30659 in April 1907.

This Kangley, Wash logging railroad was operated by Pacific States Lumber until it was abandoned in 1914. At that point, PSL put its #5 Prairie saddle tank to work on the Cascade Lumber road.

Specifications by Steve Llanso of Sweat House Media
Class5
Locobase ID13040
RailroadSeattle Southeastern
CountryUSA
Whyte2-6-2ST
Number in Class1
Road Numbers5
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1907
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase10'
Engine Wheelbase25.75'
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender)25.75'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers85000 lbs
Engine Weight114000 lbs
Tender Light Weight
Total Engine and Tender Weight114000 lbs
Tender Water Capacity1600 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)47 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure180 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort21364 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98
Heating Ability
Firebox Area90 sq. ft
Grate Area14.40 sq. ft
Evaporative Heating Surface1161 sq. ft
Superheating Surface
Combined Heating Surface1161 sq. ft
Evaporative Heating Surface/Cylinder Volume207.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2592
Same as above plus superheater percentage2592
Same as above but substitute firebox area for grate area16200
Power L13808
Power MT296.30


If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.