Locobases 14265-14266 show the four logging Prairies (14-17) that came to the WB Harbeson Lumber Company of De Funiak Springs. The last one trailed a larger tender, but was otherwise identical.
This next batch were bigger, had more cylinder volume, rolled on taller drivers and longer wheelbases, and had superheated boilers and larger fireboxes. Unlike the other two 1920 batches, which bore Bagdad Land and Lumber Company on their tenders, this pair was assigned to the F&A in Munson, Fla.
18 burned soft coal and had the tender shown in the specs. 19 burned oil; its tender carried 1,800 US gallons (6,831 litres) of oil in addition to the 4,000 gallons of water.
18 later worked the Mobile River Saw Mill Company. It then enjoyed a second career on tourist roads such as the Reese Central Railroad owned by Fred Stock, and the Dry Gulch & Tombstone Railroad.
19 was sold to locomotive rebuilder/reseller Georgia Car & Locomotive, which found a buyer in the Roscoe, Snyder & Pacific of Roscoe, Tex as their #5. After its operating days ended, it went on display.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Florida & Alabama|
|Number in Class||2|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.38|
|Overall Wheelbase (engine & tender)||50.37'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||98000 lbs|
|Engine Weight||127800 lbs|
|Tender Light Weight||80000 lbs|
|Total Engine and Tender Weight||207800 lbs|
|Tender Water Capacity||4000 gals|
|Tender Fuel Capacity (oil/coal)||8 tons|
|Minimum weight of rail (calculated)||54 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||180 psi|
|Cylinders (dia x stroke)||17" x 24"|
|Tractive Effort||21224 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.62|
|Firebox Area||100 sq. ft|
|Grate Area||18.70 sq. ft|
|Evaporative Heating Surface||1248 sq. ft|
|Superheating Surface||292 sq. ft|
|Combined Heating Surface||1540 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||197.94|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||3366|
|Same as above plus superheater percentage||4006|
|Same as above but substitute firebox area for grate area||21420|