Ozark Land & Lumber 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 12888)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 32, p. 304 Works number was 32999 in August 1908.

A few years after it bought the 4 from Baldwin (Locobase 12888), the OL&LC returned to the Philadelphia builder for a bigger, more powerful locomotive with still smaller drivers. At some later date, the 1 operated on the Ouachita & Northwestern until that road closed in 1947. With the O & NW's demise, the Louisiana Central Lumber Company bought the 1.


Class 4 (Locobase 12887)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 28, p. 188 Works number was 27181 in December 1905.

Just down the road from the Louisiana Railway (Locobase 127850), the OL & L engaged in similar logging activities and found the small Prairie in use by so many timber companies to be an answer to their hauling needs. One difference was the use of smaller drivers, which conferred just that much more tractive effort.

Some time later the OL & L sold the 4 to the Bunker Culler Lumber Company. Still later, the locomotive rebuilder/reseller bought the 4 and sold it to the Charles W Fish Lumber Company of Monico, Wisc as their 123.

Principal Dimensions by Steve Llanso of Sweat House Media
Class14
Locobase ID12,888 12,887
RailroadOzark Land & LumberOzark Land & Lumber
CountryUSAUSA
Whyte2-6-22-6-2
Number in Class11
Road Numbers14
GaugeStdStd
Number Built11
BuilderBurnham, Williams & CoBurnham, Williams & Co
Year19081905
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.05 9.17 / 2.80
Engine Wheelbase (ft / m)25.25 / 7.7023.75 / 7.24
Ratio of driving wheelbase to overall engine wheebase 0.40 0.39
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)72,000 / 32,65961,000 / 27,669
Engine Weight (lbs / kg)96,000 / 43,54583,000 / 37,648
Tender Loaded Weight (lbs / kg)60,000 / 27,21663,000 / 28,576
Total Engine and Tender Weight (lbs / kg)156,000 / 70,761146,000 / 66,224
Tender Water Capacity (gals / ML)3000 / 11.363500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 2034 / 17
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41 / 104144 / 1118
Boiler Pressure (psi / kPa)170 / 11.70180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)16" x 22" / 406x55915" x 20" / 381x508
Tractive Effort (lbs / kg)19,849 / 9003.3715,648 / 7097.82
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.63 3.90
Heating Ability
Firebox Area (sq ft / m2)93.40 / 8.6882.20 / 7.64
Grate Area (sq ft / m2)14.40 / 1.3414.13 / 1.31
Evaporative Heating Surface (sq ft / m2)1331 / 123.70991 / 92.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1331 / 123.70991 / 92.10
Evaporative Heating Surface/Cylinder Volume259.98242.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation24482543
Same as above plus superheater percentage24482543
Same as above but substitute firebox area for grate area15,87814,796
Power L140804524
Power MT374.79490.51

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