Ozark Land & Lumber 2-6-2 "Prairie" Locomotives of 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.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12888 12887
RailroadOzark Land & LumberOzark Land & Lumber
Number in Class11
Road Numbers14
Number Built11
BuilderBurnham, Williams & CoBurnham, Williams & Co
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase10' 9.17'
Engine Wheelbase25.25'23.75'
Ratio of driving wheelbase to overall engine wheebase 0.40 0.39
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers72000 lbs61000 lbs
Engine Weight96000 lbs83000 lbs
Tender Light Weight60000 lbs63000 lbs
Total Engine and Tender Weight156000 lbs146000 lbs
Tender Water Capacity3000 gals3500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)40 lb/yard34 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter41"44"
Boiler Pressure170 psi180 psi
Cylinders (dia x stroke)16" x 22"15" x 20"
Tractive Effort19849 lbs15648 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.63 3.90
Heating Ability
Firebox Area93.40 sq. ft82.20 sq. ft
Grate Area14.40 sq. ft14.13 sq. ft
Evaporative Heating Surface1331 sq. ft991 sq. ft
Superheating Surface
Combined Heating Surface1331 sq. ft991 sq. ft
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 area1587814796
Power L140804524
Power MT374.79490.51

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