Ozan-Graysonia Lumber Company 2-8-2 "Mikado" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class N E Peters (Locobase 13928)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 188 and Volume 52, p. 393. Works number was 43056 in March 1916.

Ozan ordered two locomotives to these specs at the same time. One went to the Ozan's Prescott & Northwestern as their 17; see Locobase 13927. As noted in that entry, the specs highlighted the arduous demands awaiting the engine: "Loco. is intended for the very hardest kind of service and the greatest care should be exercised in looking after the details of design and manufacture."

In 1924, the middle-sized Mike went to the Fundicion Morales in San Luis Potosi in Mexico. This road was almost immediately renamed Asarco Mexicana and was part of the American Smelting and Refining Company, the largest such company in Mexico at the time.

Specifications by Steve Llanso of Sweat House Media
ClassN E Peters
Locobase ID13,928
RailroadOzan-Graysonia Lumber Company
CountryUSA
Whyte2-8-2
Number in Class1
Road Numbers1
GaugeStd
Number Built1
BuilderBaldwin
Year1916
Valve GearWalschaert
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)57.12 / 17.41
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)137,500 / 60,781
Engine Weight (lbs / kg)176,000 / 78,472
Tender Loaded Weight (lbs / kg)110,000 / 49,895
Total Engine and Tender Weight (lbs / kg)286,000 / 128,367
Tender Water Capacity (gals / ML)5500 / 20.83
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50
Minimum weight of rail (calculated) (lb/yd)57
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)20.5" x 28" / 521x711
Tractive Effort (lbs / kg)33,340 / 15122.79
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.12
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 Volume295.98
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 area25,280
Power L14734
Power MT303.61