Owen Oregon Lumber Company 2-8-2 "Mikado" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 14937)

Data from DeGolyer, Vol 73, pp. 328. See also the Rogue Valley Model Railroad Club's website article "The Pacific & Eastern, Medco Logging Railroad and Related History" at http://rvmrc.net/P&E1905-1964.html; and the National Park Service's National Register of Historic Places nomination form for the John F and Mary Reddy House at http://pdfhost.focus.nps.gov/docs/NRHP/Text/87001538.pdf (last accessed 5 February 2014) . Works number was 58045 in September 1924.

Working in the timberlands owned by this Medford, Ore company, the 3 was a standard superheated logging Mikado. Piston valves measured 10" (254 mm) in diameter.

The Owen Oregon was formed out of lumber assets and included all of the Pacific & Eastern Railway. The P&E had been founded in 1904, never enjoyed much success and closed in 1918, was bought in 1920 by Millard D Olds of Cheboygan, Mich and James N Brownlee of Mississippi. Brownlee sold out to Olds in 1923 and Olds sold out to James H Owen's family in 1924.

The maximum grade was a hefty 6% and curves were as tight as 25 degrees. Later in the 1920s, the Meford Corporation would begin planning for an extension of the railway to Klamath Falls, but,as the Rogue Valley website notes, the Great Depression put paid to that idea.

The 3 would be brought into the Medford Corporation in 1935, three years after Owen Oregon entered receivership.. Thirty years later, the Calfornia Western would buy the engine in February 1965 and renumber it 45.

Specifications by Steve Llanso of Sweat House Media
Class3
Locobase ID14,937
RailroadOwen Oregon Lumber Company
CountryUSA
Whyte2-8-2
Number in Class1
Road Numbers3
GaugeStd
Number Built1
BuilderBaldwin
Year1924
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.08 / 3.68
Engine Wheelbase (ft / m)28.50 / 8.69
Ratio of driving wheelbase to overall engine wheebase 0.42
Overall Wheelbase (engine & tender) (ft / m)50.35 / 15.35
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)120,000 / 54,431
Engine Weight (lbs / kg)150,000 / 68,039
Tender Loaded Weight (lbs / kg)86,000 / 39,009
Total Engine and Tender Weight (lbs / kg)236,000 / 107,048
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1500 / 5.70
Minimum weight of rail (calculated) (lb/yd / kg/m)50 / 25
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)19" x 24" / 483x610
Tractive Effort (lbs / kg)30,127 / 13665.39
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98
Heating Ability
Firebox Area (sq ft / m2)158 / 14.68
Grate Area (sq ft / m2)29 / 2.69
Evaporative Heating Surface (sq ft / m2)1700 / 157.93
Superheating Surface (sq ft / m2)356 / 33.07
Combined Heating Surface (sq ft / m2)2056 / 191
Evaporative Heating Surface/Cylinder Volume215.85
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5220
Same as above plus superheater percentage6107
Same as above but substitute firebox area for grate area33,275
Power L19543
Power MT701.29