Columbia & Nehalem River 2-8-2 "Mikado" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 117 (Locobase 14236)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 51, pp. 21+ and Vol 52, pp. 395+. See also the history of the Kerry Line at http://www.brian894x4.com/Kerryrailroadhistory.html . Works numbers were 41710 in September 1914 and 43220 in April 1916.

After being displayed at the 1915 Pacific Exposition in San Francisco, the 117 went to the logging railroad headquartered in Kerry, Ore. There it encountered 56 lb/yard (28 kg/metre) rail climbing 7% maximum grades and arcing around curves as tight as 30 degrees.

The C&NR sold the 117 to K P Timber in September 1925. Weyerhaeuser later bought the 117 and renumbered in 109. Sometime after 1935, the 109 was sold to the Columbia & Colitz.

Specifications by Steve Llanso of Sweat House Media
Class117
Locobase ID14,236
RailroadColumbia & Nehalem River
CountryUSA
Whyte2-8-2
Number in Class2
Road Numbers117-118
GaugeStd
Number Built2
BuilderBaldwin
Year1914
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.08 / 3.68
Engine Wheelbase (ft / m)27.17 / 8.31
Ratio of driving wheelbase to overall engine wheebase 0.44
Overall Wheelbase (engine & tender) (ft / m)50.54 / 15.38
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)113,550 / 51,483
Engine Weight (lbs / kg)141,150 / 64,002
Tender Loaded Weight (lbs / kg)90,000 / 38,102
Total Engine and Tender Weight (lbs / kg)231,150 / 102,104
Tender Water Capacity (gals / ML)4500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1600 / 6.40
Minimum weight of rail (calculated) (lb/yd)47
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)200 / 12.80
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)30,044 / 13627.75
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.78
Heating Ability
Firebox Area (sq ft / m2)140 / 13.01
Grate Area (sq ft / m2)25.50 / 2.37
Evaporative Heating Surface (sq ft / m2)2108 / 195.84
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2108 / 195.84
Evaporative Heating Surface/Cylinder Volume298.22
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5100
Same as above plus superheater percentage5100
Same as above but substitute firebox area for grate area28,000
Power L15826
Power MT452.46