Minarets & Western 2-8-2 "Mikado" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 14276)

Data from http://www.trainboard.com/grapevine/group.php?discussionid=884&do=discuss. See also Edward J. Kamholz, Jim Blain, Gregory Kamholz, The Oregon-American Lumber Company: Ain't No More, (Stanford University Press, 2003), p. 53. Works number was 61858 in 1920.

When the Oregon-American Lumber Company discovered how ill-suited this relatively large Alco was for forest work, it refused delivery of the engine and sent it off to the M&W.

After its absorption by the Southern Pacific, the 101 retained its number. Later, it was sold to locomotive rebuilder/reseller Birmingham Rail & Locomotive which sold it to the Aberdeen & Rockfish in 1935 as their #40. It eventually wound up on the Valley Railroad.

Specifications by Steve Llanso of Sweat House Media
Class101
Locobase ID14,276
RailroadMinarets & Western
CountryUSA
Whyte2-8-2
Number in Class1
Road Numbers101
GaugeStd
Number Built1
BuilderAlco
Year1921
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.25 / 4.34
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)136,000 / 61,689
Engine Weight (lbs / kg)176,000 / 79,832
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1800 / 6.80
Minimum weight of rail (calculated) (lb/yd)57
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)20" x 28" / 508x711
Tractive Effort (lbs / kg)35,700 / 16193.27
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.81
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)43.30
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7794
Same as above plus superheater percentage7794
Same as above but substitute firebox area for grate area
Power L1
Power MT