Pacific Lumber Company 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 13615)

Data from Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, p.55. Works number was 24317 in June 1904.

Typical wood-burning double-ender tank for the Scotia, Calif redwood logger. Unlike the later logging Prairies, this engine was sold after a short time to the Holmes-Eureka Lumber Company.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13615
RailroadPacific Lumber Company
Number in Class1
Road Numbers5 / 25
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase7'
Engine Wheelbase22.67'
Ratio of driving wheelbase to overall engine wheebase 0.31
Overall Wheelbase (engine & tender)22.67'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers67000 lbs
Engine Weight94000 lbs
Tender Light Weight
Total Engine and Tender Weight94000 lbs
Tender Water Capacity1500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)56 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure160 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort18991 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.53
Heating Ability
Firebox Area77.70 sq. ft
Grate Area14.40 sq. ft
Evaporative Heating Surface1062 sq. ft
Superheating Surface
Combined Heating Surface1062 sq. ft
Evaporative Heating Surface/Cylinder Volume190.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2304
Same as above plus superheater percentage2304
Same as above but substitute firebox area for grate area12432
Power L13047
Power MT200.52

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