Pacific & Idaho Northern 2-8-2 "Mikado" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 200 (Locobase 13908)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 118. (Thanks to Steve Low, whose 10 March 2018 email noted a very confusing paragraph that Locobase gratefully fixed.) Works number was 38035 in July 1912.

For the 200, its stint on the P & IN logging road was just the start of a long career. It was sold to the Newaukum Valley on Onalaska, Wash sometime before 1922.

When the NVRR was done with it, the railroad sold the 200 to the Carlisle Lumber .Company as their 900. There it partnered with the 901 (a very similar engine described in Locobase 13681).

Carlisle ran the 900 for well over a decade, then sold it in 1943 to the Red River Lumber Company, which renumbered it 104

RRLC soon sold all of its assets, including the 104, to the Fruit Growers Supply Company.

The engine was scrapped in November 1956.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID13,908
RailroadPacific & Idaho Northern
Number in Class1
Road Numbers200
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.08 / 3.99
Engine Wheelbase (ft / m)27 / 8.23
Ratio of driving wheelbase to overall engine wheebase 0.48
Overall Wheelbase (engine & tender) (ft / m)55.50 / 16.92
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)132,900 / 60,282
Engine Weight (lbs / kg)171,700 / 77,882
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)271,700 / 123,241
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)9 / 8.20
Minimum weight of rail (calculated) (lb/yd / kg/m)55 / 27.50
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 26" / 508x660
Tractive Effort (lbs / kg)33,150 / 15036.60
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.01
Heating Ability
Firebox Area (sq ft / m2)158 / 14.68
Grate Area (sq ft / m2)41.30 / 3.84
Evaporative Heating Surface (sq ft / m2)3166 / 294.13
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)3166 / 294.13
Evaporative Heating Surface/Cylinder Volume334.89
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7434
Same as above plus superheater percentage7434
Same as above but substitute firebox area for grate area28,440
Power L16026
Power MT399.85

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Wes Barris