Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 49, p. 27. See also the excellent Dictionary of Canadian Biography Online's James Dunsmuir entry at []. Works number was 39115 in January 1913.
British Columbia's Vancouver Island held coal reserves and the Canadian Collieries (Dunsmuir) Ltd operated the Wellington Mines near Nanaimo and Cumberland's Comox mines. The company, which had only been formed by McKenzie and Mann after its purchase of the assets from Dunsmuir in 1910, included all of his mining interests and the railroad that served them.
This little Mikado's first year in operation resulted in a long letter written on 24 October 1913 to Eddystone in which the CC(D) Ltd detailed all of the changes it had felt compelled to make to the engine. Parts such as the eccentric strap and the equalizer pin worked loose, many parts were replaced by case-hardened counterparts, and the main drivers were wearing too rapidly. The company installed a plate between the ash pan and the axle and turned the injector overflow to drip into the pan "to prevent dust blowing onto eccentrics."
Ultimately, the 20 served the CC(D) for 45 years before being scrapped in March 1958.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 20 |
Locobase ID | 14170 |
Railroad | Canadian Collieries (Dunsmuir) Ltd |
Country | Canada |
Whyte | 2-8-2 |
Number in Class | 1 |
Road Numbers | 20 |
Gauge | Std |
Number Built | 1 |
Builder | Baldwin |
Year | 1913 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 12.08 / 3.68 |
Engine Wheelbase (ft / m) | 27.25 / 8.31 |
Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
Overall Wheelbase (engine & tender) (ft / m) | 51.54 / 15.71 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 114,000 / 51,710 |
Engine Weight (lbs / kg) | 142,000 / 64,410 |
Tender Loaded Weight (lbs / kg) | 90,000 / 40,823 |
Total Engine and Tender Weight (lbs / kg) | 232,000 / 105,233 |
Tender Water Capacity (gals / ML) | 4500 / 17.05 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7 / 6 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 48 / 24 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 44 / 1118 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
Tractive Effort (lbs / kg) | 27,039 / 12264.70 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.22 |
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 / 195.84 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 2108 / 195.84 |
Evaporative Heating Surface/Cylinder Volume | 298.16 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 4590 |
Same as above plus superheater percentage | 4590 |
Same as above but substitute firebox area for grate area | 25,200 |
Power L1 | 5243 |
Power MT | 405.57 |