Good Pine Lumber 2-6-2 "Prairie" Locomotives in 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.

Principal Dimensions by Steve Llanso of Sweat House Media
Class56
Locobase ID12,937 12,938
RailroadGood Pine LumberGood Pine Lumber
CountryUSAUSA
Whyte2-6-22-6-2
Number in Class11
Road Numbers5-66
GaugeStdStd
Number Built11
BuilderBurnham, Williams & CoBaldwin
Year19061912
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.8010.25 / 3.12
Engine Wheelbase (ft / m)23.75 / 7.2426.83 / 8.18
Ratio of driving wheelbase to overall engine wheebase 0.39 0.38
Overall Wheelbase (engine & tender) (ft / m)54.46 / 16.60
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)61,000 / 27,66989,000 / 40,370
Engine Weight (lbs / kg)83,000 / 37,648117,000 / 53,070
Tender Loaded Weight (lbs / kg)63,000 / 28,57690,000 / 40,823
Total Engine and Tender Weight (lbs / kg)146,000 / 66,224207,000 / 93,893
Tender Water Capacity (gals / ML)3000 / 13.264500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)8 / 7.30
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 1749 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 111847 / 1194
Boiler Pressure (psi / kPa)180 / 12.40185 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x50817" x 24" / 432x610
Tractive Effort (lbs / kg)14,967 / 6788.9323,206 / 10526.08
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08 3.84
Heating Ability
Firebox Area (sq ft / m2)82.20 / 7.64121 / 11.25
Grate Area (sq ft / m2)14.13 / 1.3118.10 / 1.68
Evaporative Heating Surface (sq ft / m2)991 / 92.101552 / 144.24
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)991 / 92.101552 / 144.24
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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