Oakhurst Lumber Company 2-8-2 "Mikado" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 16 (Locobase 15468)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 73, pp. 325. See the Texas Forestry Museum's Sawmill Database entry at [] and Robert Wooster, "OAKHURST, TX," Handbook of Texas Online ([]), accessed July 19, 2013. Published by the Texas State Historical Association.. Works number was 57704 in March 1924.

When Texas Long Leaf Lumber bought out the Palmetto Lumber Company, it renamed the operation after the PLC's headquarters town of Oakhurst, Texas. The sawmill at Oakhurst had originally been founded by Columbia Lumber Company at the turn of the century. Like many sawmill towns, Oakhurst had its company-run commissary, a drugstore, and a community center and at its lumber-era peak was home to 600 residents.

OLC ordered a medium-sized logging Mikado that conformed to the ICC regulations for such engines and, say the specifications, had the "extra heavy" frame necessary to cope with "rough track". Its cylinders were served steam by their 8" (203 mm) piston valves.

After the Oakhurst mill closed in 1930 and operations moved elsewhere, the TLLC sold the 16 to nearby Frost Lumber, which set it to work on their Nacogdoches & Southeastern.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID15468
RailroadOakhurst Lumber Company
Number in Class1
Road Numbers16
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.25 / 3.73
Engine Wheelbase (ft / m)27.50 / 8.38
Ratio of driving wheelbase to overall engine wheelbase 0.45
Overall Wheelbase (engine & tender) (ft / m)52.67 / 16.05
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)100,000 / 45,359
Engine Weight (lbs / kg)129,000 / 58,513
Tender Loaded Weight (lbs / kg)95,000 / 43,091
Total Engine and Tender Weight (lbs / kg)224,000 / 101,604
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1600 / 6056
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 21
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x610
Tractive Effort (lbs / kg)24,118 / 10939.75
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.15
Heating Ability
Tubes (number - dia) (in / mm)208 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14 / 4.27
Firebox Area (sq ft / m2)112 / 10.41
Grate Area (sq ft / m2)22.20 / 2.06
Evaporative Heating Surface (sq ft / m2)1628 / 151.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1628 / 151.30
Evaporative Heating Surface/Cylinder Volume258.00
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3996
Same as above plus superheater percentage3996
Same as above but substitute firebox area for grate area20,160
Power L14577
Power MT403.62

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