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, Volume 51, pp. 21+ and Volume 52, pp. 395+. See also the history of the Kerry Line at [
] . (Thanks to Chris Hohl for his 25 July 2023 email reporting the pair's coal capacity.) 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.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 117 |
| Locobase ID | 14236 |
| Railroad | Columbia & Nehalem River |
| Country | USA |
| Whyte | 2-8-2 |
| Number in Class | 2 |
| Road Numbers | 117-118 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1914 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12.08 / 3.68 |
| Engine Wheelbase (ft / m) | 27.17 / 8.28 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
| Overall Wheelbase (engine & tender) (ft / m) | 50.54 / 15.40 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 113,550 / 51,505 |
| Engine Weight (lbs / kg) | 141,150 / 64,025 |
| Tender Loaded Weight (lbs / kg) | 90,000 / 40,823 |
| Total Engine and Tender Weight (lbs / kg) | 231,150 / 104,848 |
| 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) | 47 / 23.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| 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 | |
| Tubes (number - dia) (in / mm) | 291 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13 / 3.96 |
| Firebox Area (sq ft / m2) | 140 / 13.01 |
| Grate Area (sq ft / m2) | 25.50 / 2.37 |
| Evaporative Heating Surface (sq ft / m2) | 2108 / 195.91 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 2108 / 195.91 |
| Evaporative Heating Surface/Cylinder Volume | 298.16 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5100 |
| Same as above plus superheater percentage | 5100 |
| Same as above but substitute firebox area for grate area | 28,000 |
| Power L1 | 5825 |
| Power MT | 452.38 |
Photos
- Columbia & Nehalem River 117 (1917 Edward J Ozog photo courtesy Stephen Low)
