Arkansas Short Leaf Lumber Company 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 14051)

Data from Baldwin Negative 7802 as digitized by the DeGolyer Library of Southern Methodist University and archived at http://digitalcollections.smu.edu/u?/rwy,321. See also DeGolyer, Vol 65, pp. 21+. Works number was 54231 in January 1921.

Although similar in many respects to the 1914 engine shown in Locobase 14050, this logging Prairie was considerably heavier, had a larger boiler pressed to a higher degree, slightly larger grate, was fitted with a good-sized superheater, and served its larger cylinders through 8" piston valves.

Long-Bell soon redeployed this locomotive on the Sibley Lake Bisteneau & Southern Railway. See Locobase 13449 for a history of the SLB & S.


Class 8 (Locobase 14050)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 46. See Helene King, "The Economic History of the Long-Bell Lumber Company", MS Thesis Submitted To The Faculty of the Louisiana State University and Agricultural And Mechanical College, August 1936 at [external link] . Works number was 41173 in March 1914.

The ASLLC was organized at Pine Bluff, Ark on 14 June 1911 to harvest hardwood, which was a first for its parent Long Bell Lumber Company.

Principal Dimensions by Steve Llanso of Sweat House Media
Class58
Locobase ID14,051 14,050
RailroadArkansas Short Leaf Lumber CompanyArkansas Short Leaf Lumber Company
CountryUSAUSA
Whyte2-6-22-6-2
Number in Class11
Road Numbers58
GaugeStdStd
Number Built11
BuilderBaldwinBaldwin
Year19211914
Valve GearWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.80 9.17 / 2.80
Engine Wheelbase (ft / m)24.67 / 7.5223.75 / 7.24
Ratio of driving wheelbase to overall engine wheebase 0.37 0.39
Overall Wheelbase (engine & tender) (ft / m)48.21 / 14.6953.92 / 16.43
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)92,300 / 41,86767,700 / 30,708
Engine Weight (lbs / kg)123,100 / 55,83788,650 / 40,211
Tender Loaded Weight (lbs / kg)64,900 / 29,43860,000 / 27,216
Total Engine and Tender Weight (lbs / kg)188,000 / 85,275148,650 / 67,427
Tender Water Capacity (gals / ML)3000 / 11.363000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.506 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.5038 / 19
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)47 / 119446 / 1168
Boiler Pressure (psi / kPa)200 / 13.80175 / 12.10
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x61015" x 20" / 381x508
Tractive Effort (lbs / kg)22,223 / 10080.2014,552 / 6600.68
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.15 4.65
Heating Ability
Firebox Area (sq ft / m2)119 / 11.0687 / 8.08
Grate Area (sq ft / m2)15.50 / 1.4414.10 / 1.31
Evaporative Heating Surface (sq ft / m2)1170 / 108.70995 / 92.44
Superheating Surface (sq ft / m2)282 / 26.20
Combined Heating Surface (sq ft / m2)1452 / 134.90995 / 92.44
Evaporative Heating Surface/Cylinder Volume209.49243.24
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation31002468
Same as above plus superheater percentage36892468
Same as above but substitute firebox area for grate area28,32215,225
Power L112,0704690
Power MT864.89458.18