Manary Logging Company 2-8-2 "Mikado" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 15226)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 71, pp. 331+. See also the 1928 Multnomah-Lincoln County Archives biography of C D Johnson presented at [] and contributed for use in USGenWeb Archives by:

Ila Wakley February 6, 2011, 3:31 pm and Ward Tonsfeldt, Celebrating the Siuslaw: A Century of Growth, Siuslaw National Forest (), pp. 160. See the story of the Spruce Production Division at Locobase 15206. Works number was 55347 in April 1922.

The MLC was a subsidiary of the Pacific Spruce Corporatino. In 1918, PSC had bought a concession from the Spruce Production Corporation, which was wrapping up the disposal of assets created by the US Forest Service-operated Spruce Production Division.

The MLC, operated the Alsea Southern Railroad, which was built by the SPD as the SPD No 12 and covered 23.4 miles (37.7 km) in the South Yaquina District (about 100 miles/161 km south of the mouth of the Columbia River). According to the specs, this oil-burning logging Mikado would be traveling on 60 lb/yard (30 kg/metre) rail around relatively gentle 15 degree curves. Its ruling grades would be 4% when heading up to the timber stands and 2 1/2% pulling loaded cars. 8" (203 mm) piston valves admitted superheated steam to the cylinders.

Working on the same road and bearing consecutively the heralds of the MLC, C D Johnson (another PSC subsidiary), and Georgia Pacific, the 1 ended its days as a display in the PSC's home town of Toledo, Ore.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID15,226
RailroadManary Logging Company
Number in Class1
Road Numbers1
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66
Engine Wheelbase (ft / m)27.58 / 8.41
Ratio of driving wheelbase to overall engine wheebase 0.44
Overall Wheelbase (engine & tender) (ft / m)49.67 / 15.14
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)118,000 / 53,524
Engine Weight (lbs / kg)144,000 / 65,317
Tender Loaded Weight (lbs / kg)102,500 / 46,493
Total Engine and Tender Weight (lbs / kg)246,500 / 111,810
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)2000 / 7.60
Minimum weight of rail (calculated) (lb/yd / kg/m)49 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)185 / 12.80
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)27,790 / 12605.35
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.25
Heating Ability
Firebox Area (sq ft / m2)141 / 13.10
Grate Area (sq ft / m2)25.50 / 2.37
Evaporative Heating Surface (sq ft / m2)1576 / 146.41
Superheating Surface (sq ft / m2)328 / 30.47
Combined Heating Surface (sq ft / m2)1904 / 176.88
Evaporative Heating Surface/Cylinder Volume222.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4718
Same as above plus superheater percentage5519
Same as above but substitute firebox area for grate area30,519
Power L110,044
Power MT750.62

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