Good Pine Lumber 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 12937)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 28, p. 188 and Volume 34, p. 297. Works number was 29984 in January 1907 and 34466 in April 1910.

Logging Prairies with these dimensions and burning both coal and wood were thick on the ground in the South in the first couple of decades of the 20th Century. Baldwin pulled this design off the shelf. Part of William Buchanan's Louisiana lumber empire, the sawmill on this railroad was located near Jena, La at Goodpine.

Nothing is known of 5's subsequent career, if any, but 6 was moved to another part of Buchanan's network to operate on the Turkey Creek Lumber Company. Sometime later, the 6 moved again within the empire and served the Tall Timber Lumber Company as their #21.

Class 6 (Locobase 12938)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 48, p. 304-305. Works number was 40278 in July 1913.

Good Pine's second #6 was also a logging Prairie (compare with Locobase 12937), but it had more size and power. The Tall Timber's #6 (Locobase 14162) was identical and also served a William Buchanan timber company. Later the 6 operated on the Turkey Creek Lumber Company's rails, from which it moved to Evangeline Lumber.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12,937 12,938
RailroadGood Pine LumberGood Pine Lumber
Number in Class11
Road Numbers5-66
Number Built11
BuilderBurnham, Williams & CoBaldwin
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft) 9.1710.25
Engine Wheelbase (ft)23.7526.83
Ratio of driving wheelbase to overall engine wheebase 0.39 0.38
Overall Wheelbase (engine & tender) (ft)54.46
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)61,00089,000
Engine Weight (lbs)83,000117,000
Tender Loaded Weight (lbs)63,00090,000
Total Engine and Tender Weight (lbs)146,000207,000
Tender Water Capacity (gals)30004500
Tender Fuel Capacity (oil/coal) (gals/tons)8
Minimum weight of rail (calculated) (lb/yd)3449
Geometry Relating to Tractive Effort
Driver Diameter (in)4647
Boiler Pressure (psi)180185
High Pressure Cylinders (dia x stroke) (in)15" x 20"17" x 24"
Tractive Effort (lbs)14,96723,206
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08 3.84
Heating Ability
Firebox Area (sq ft)82.20121
Grate Area (sq ft)14.1318.10
Evaporative Heating Surface (sq ft)9911552
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)9911552
Evaporative Heating Surface/Cylinder Volume242.26246.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation25433349
Same as above plus superheater percentage25433349
Same as above but substitute firebox area for grate area14,79622,385
Power L147304958
Power MT512.85368.44

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