Albion Lumber Company / Alger Logging Company / Algoma Lumber Company 2-6-2 "Prairie" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 11730)

Data from Negative 2137, Southern Methodist University, Central University Libraries, DeGolyer Library collection of digitized Baldwin images, retrieved 26 October 2010 from http://digitalcollections.smu.edu/cdm4/item_viewer.php . Works number was 27711 in March 1906.

ALC bought out the Samish Logging Company near Lookout, Washington (soon to be renamed after Hollis Alger) in 1886 and soon grew into one of the largest lumber companies in the Northwest. This Prairie had the cabbage stack of a wood burner and operated for the ALC for more than 30 years before being scrapped in


Class 2 (Locobase 14307)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 52, p. 348. Works number was 42102 in May 1915.

This logging Prairie tank represents an unusual variation on the usual 2-6-2 wood-train product that Baldwin sold to dozens of lumber companies. Its operating environment in the Oregon forests wasn't much different from the usual scene: 56-60 lb/yard (28-30 kg/metre) rail, grades of 3 1/2-4% and curves of 25 degrees (231 feet/70.4 metre radii). The shorter wheelbase concentrated a bit more adhesion weight on the track, but the engine still was a wood-burning double ender.

The ALC was open from 1903 to 1943, at which point the 2 was converted to a separate-tender 2-6-2 and sold to the US Army. The Army at first designated it L4, later 6908.


Class 5 (Locobase 13314)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 32, p. 17. Works number was 33094 in December 1908.

By the time the ALC bought this wood-burning Prairie tank from Baldwin, the Mendocino County (Calif) timber company was owned by the Southern Pacific as part of its network of Redwood Country railroad holdings. The 5 operated for the company until its railway was abandoned in 1931. The rails and the 5 were scrapped in 1937.

Specifications by Steve Llanso of Sweat House Media
Class225
Locobase ID11730 14307 13314
RailroadAlger Logging CompanyAlgoma Lumber CompanyAlbion Lumber Company
CountryUSAUSAUSA
Whyte2-6-22-6-2T2-6-2T
Number in Class111
Road Numbers225
GaugeStdStdStd
Number Built111
BuilderBaldwinBaldwinBurnham, Williams & Co
Year190619071908
Valve GearWalschaertStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase 9.17' 9.25' 8.33'
Engine Wheelbase23.50'21.67'22.50'
Ratio of driving wheelbase to overall engine wheebase 0.39 0.43 0.37
Overall Wheelbase (engine & tender)43.54'21.67'22.50'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers60130 lbs90400 lbs85000 lbs
Engine Weight86230 lbs124550 lbs119000 lbs
Tender Light Weight53770 lbs
Total Engine and Tender Weight140000 lbs124550 lbs119000 lbs
Tender Water Capacity2500 gals1600 gals1500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)33 lb/yard50 lb/yard47 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter42"44"47"
Boiler Pressure160 psi160 psi160 psi
Cylinders (dia x stroke)14" x 22"17" x 24"17" x 22"
Tractive Effort13963 lbs21439 lbs18398 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.31 4.22 4.62
Heating Ability
Firebox Area87.90 sq. ft103 sq. ft91.60 sq. ft
Grate Area13.30 sq. ft14 sq. ft14.40 sq. ft
Evaporative Heating Surface1082 sq. ft1224 sq. ft1099 sq. ft
Superheating Surface
Combined Heating Surface1082 sq. ft1224 sq. ft1099 sq. ft
Evaporative Heating Surface/Cylinder Volume276.04194.13190.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation212822402304
Same as above plus superheater percentage212822402304
Same as above but substitute firebox area for grate area140641648014656
Power L1434732363376
Power MT478.14236.75262.69


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