Donovan-Corkery Lumber Company 2-8-2 "Mikado" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 15215)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 71, pp. 239+. See also the Clark Kinsey photograph and text at the University of Washington Libraries, Special Collections Division photographic archive entry at Works number was 57409

in November 1923.

This oil-burning Mike was typical of several other 2-8-2s serving timber harvesters in Washington State. D-CLC was based in Aberdeen, Wash and worked the timber in Wishkah River Valley in northeast Grays Harbor County. Succeeding to the assets of the Coats-Fordney Logging Company in 1923, it operated 18 miles (29 km) on "well-ballasted" 60 lb/yard (30 kg/metre) at the time the 4 arrived. Ruling grades rose at 3%, but "in case of emergency locomotive would be required to traverse 5-5 1/2% grades."

Declining fortunes led to the B-CLC abandoning its operations in 1934. The 4 went to Simpson Logging first, then to Comox in 1937. The latter was based at Ladysmith, British Columbia and operated the engine as their 11 until its retirement in October 1962. Comox then donated the 11 to the Logging Equipment Museum for display at the Crown Forest Product office.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID15215
RailroadDonovan-Corkery Lumber Company
Number in Class1
Road Numbers4
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)49.81 / 15.18
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 / Liters/MT)2000 / 7570
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
Tubes (number - dia) (in / mm)164 - 2" / 51
Flues (number - dia) (in / mm)24 - 5.375" / 137
Flue/Tube length (ft / m)12.08 / 3.68
Firebox Area (sq ft / m2)141 / 13.10
Grate Area (sq ft / m2)25.50 / 2.37
Evaporative Heating Surface (sq ft / m2)1576 / 146.47
Superheating Surface (sq ft / m2)328 / 30.48
Combined Heating Surface (sq ft / m2)1904 / 176.95
Evaporative Heating Surface/Cylinder Volume222.91
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 L110,042
Power MT750.47

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