Louisiana & Pacific 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 20 (Locobase 13073)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 30, p. 144 and Volume 32, p. 100. See also the TAP Lines case summary of the complicated nature of this railroad at [], last accessed 28 September 2011. Works numbers were 29668 in December 1906, 32221, 32286 in November 1907; 33356-33358 in April 1909.

A quint-partite assembly of logging roads in Louisiana all owned by the R A Long interests. Although none of the 5 short logging roads connected to each other, they all struck points on the Lake Charles & Northern Railway.

The L & P operated several of Baldwin's standard logging Prairies. Hudson River Lumber Company was credited as the buyer for the 20 and Calcasieu Long Leaf Lumber Company for the 70-71. Both of the latter later operated under the Longville Lumber name. Three additional locomotives were bought directly by the Long Bell Lumber Company.

46 later was sold to the King Ryder Lumber Company.


Class 99 (Locobase 13827)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 39, p. 68 and Vol 52, pp. 328. See also W T Black, "Early Sawmilling at Lake Charles," Louisiana at [] . Works numbers were 37519 and 37616 in February 1912 and 41562 in July 1914.

The Baldwin spec says Longville Lumber ordered these relatively powerful logging Prairies. It's not clear from the record when the 99 was sold by sister company Long Bell Lumber, but it may have occurred when the L & P was closed. The engine wound up working for the Angelina County Lumber Company of Keltys, Texas.

47 was later renumbered for Long Bell Lumber as their 11.

The 69 originally operated on the branch serving the Calcasieu Long Leaf mills at Lake Charles, La. It then served several masters beginning with Rapides Gravel Co in Woodworth, La, then Mid State Materials Co. MSMC sold the engine to dealer George Silcott in 1968, who sold it in 1970. The locomotive then went international to end up in the hands of William Richmond of Strome, Alberta, Canada. It was last known to be in storage by Ronald Bergseth of Sedgewick, Alberta.

Principal Dimensions by Steve Llanso of Sweat House Media
Class2099
Locobase ID13,073 13,827
RailroadLouisiana & PacificLouisiana & Pacific
CountryUSAUSA
Whyte2-6-22-6-2
Number in Class61
Road Numbers20, 70-71, 46, 97-9899, 47, 69
GaugeStdStd
Number Built61
BuilderBurnham, Williams & CoBaldwin
Year19061912
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.80 9.17 / 2.80
Engine Wheelbase (ft / m)23.75 / 7.2424.67 / 7.52
Ratio of driving wheelbase to overall engine wheebase 0.39 0.37
Overall Wheelbase (engine & tender) (ft / m)44.6548.21 / 14.69
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)61,000 / 27,66982,000 / 37,195
Engine Weight (lbs / kg)84,000 / 38,102110,000 / 49,895
Tender Loaded Weight (lbs / kg)60,000 / 27,21660,000 / 27,216
Total Engine and Tender Weight (lbs / kg)144,000 / 65,318170,000 / 77,111
Tender Water Capacity (gals / ML)3000 / 11.363000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 1746 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 116846 / 1168
Boiler Pressure (psi / kPa)180 / 12.40200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x50816" x 24" / 406x610
Tractive Effort (lbs / kg)14,967 / 6788.9322,706 / 10299.28
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08 3.61
Heating Ability
Firebox Area (sq ft / m2)82.20 / 7.64112 / 10.41
Grate Area (sq ft / m2)14.13 / 1.3116 / 1.49
Evaporative Heating Surface (sq ft / m2)991 / 92.101594 / 148.09
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)991 / 92.101594 / 148.09
Evaporative Heating Surface/Cylinder Volume242.26285.40
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation25433200
Same as above plus superheater percentage25433200
Same as above but substitute firebox area for grate area14,79622,400
Power L147305914
Power MT512.85477.00

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