Florala Saw Mill Company 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 100 (Locobase 11010)

Data from "Logging Locomotives", Record of Recent Construction #96 (Baldwin Locomotive Works, 1918), p. 12-13. See also DeGolyer, Vol 62, pp. 331+. (Thanks to Chris Hohl for his January 2014 email stating the tender capacity.) Works numbers were 52261 in August 1919 and 52293 in September.

Among the many logging Prairies built in the late 'teens-early 20s, this pair went to the Florala. Sporting the Rushton cabbage stack that signified a wood-burner in need of spark-arresting, they showed a typical light-engine profile.The tender carried three cords of wood.

Locobase isn't sure what happened to the #101. The #100 would have a long history. After only 4 years serving the Florala, it was sold to the Alger-Sullivan Lumber Company and put in service on the common carrier Escambia Railway. For the next 3 decades, it operated out of Century, Fla. When it was retired, #100 was put in display for the next 20 years. Purchased off the scrap pile by the Whitewater Valley Railway of Connersville, Ind, the engine was restored and ran for two more decades in tourist service.

Brought back home by the Alger-Sullivan Historical Society, the #100 waited for several years for restoration funds to be lined up. One advantage was the previous acquisition of a new boiler and firebox. In 2008, the Society was able to begin actual restoration work.

Specifications by Steve Llanso of Sweat House Media
Locobase ID11010
RailroadFlorala Saw Mill Company
Number in Class2
Road Numbers100-101
Number Built2
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase 9.17'
Engine Wheelbase23.75'
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender)45.56'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers67800 lbs
Engine Weight91950 lbs
Tender Light Weight70000 lbs
Total Engine and Tender Weight161950 lbs
Tender Water Capacity3500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)38 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure180 psi
Cylinders (dia x stroke)15" x 24"
Tractive Effort18777 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.61
Heating Ability
Firebox Area86 sq. ft
Grate Area14.10 sq. ft
Evaporative Heating Surface1074 sq. ft
Superheating Surface
Combined Heating Surface1074 sq. ft
Evaporative Heating Surface/Cylinder Volume218.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2538
Same as above plus superheater percentage2538
Same as above but substitute firebox area for grate area15480
Power L14044
Power MT394.49


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