Marysville & Northern 2-8-2 "Mikado" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 13681)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 35, p. 283. Works number was 34563 in April 1910.

This Washington State logging road of Bryant, Wash was closed and dismantled by 1927 and the Carlisle & Northern of Onalaska, Wash bought the 1 and renumbered 901. Later the Newaukum Valley of Napavine, Wash bought the 901, operated it, and sold it in 1942 to Valley & Siletz, which renumbered it 57 in Hoskins, Ore and ran it until it was scrapped in December 1955.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID13,681
RailroadMarysville & Northern
Number in Class1
Road Numbers1
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)
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)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)251,700 / 114,169
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)2800 / 10.60
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)160 / 11.40
High Pressure Cylinders (dia x stroke) (in / mm)20" x 28" / 508x711
Tractive Effort (lbs / kg)31,733 / 14393.86
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.19
Heating Ability
Firebox Area (sq ft / m2)148 / 13.75
Grate Area (sq ft / m2)41.30 / 3.84
Evaporative Heating Surface (sq ft / m2)3156 / 293.20
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)3156 / 293.20
Evaporative Heating Surface/Cylinder Volume309.99
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation6608
Same as above plus superheater percentage6608
Same as above but substitute firebox area for grate area23,680
Power L14898
Power MT325.00