Vance Lumber Company 2-8-2 "Mikado" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 15241)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 71, pp. 417+. Works number was 55804 in November 1922.

The VLC's rails near Malone, Wash included 5 1/2-6% grades over 3/4 of a mile (1.2 km) on 56 lb/yard (28 kg/metre) rail. Maximum curvature reached 30 degrees. Baldwin's standard oil-burning, superheated logging Mikado had the usual 8" (203 mm) piston valves.

Mason County Logging Company of Bordeaux, Wash bought the VLC in 1923 and retained the 3 until June 1942, when the engine was moved on to the Santa Maria Valley in California as their 150. SMV used the 150 for another decade before scrapping it in 1952.

Specifications by Steve Llanso of Sweat House Media
Class4
Locobase ID15,241
RailroadVance Lumber Company
CountryUSA
Whyte2-8-2
Number in Class1
Road Numbers4
GaugeStd
Number Built1
BuilderBaldwin
Year1922
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)48.40 / 14.75
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)116,000 / 52,617
Engine Weight (lbs / kg)143,000 / 64,864
Tender Loaded Weight (lbs / kg)76,000 / 34,473
Total Engine and Tender Weight (lbs / kg)219,000 / 99,337
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1600 / 6.10
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)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) 4.17
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 MT763.56