Marion County Lumber Company 2-6-0 "Mogul" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 11095)

Data from Logging Locomotives 1913 (Philadelphia, Pa: Baldwin Locomotive Works, 1913), p 11 and DeGolyer, Volume 30, p. 258. Works number was 31259 in July 1907.

Based in Marion, SC, this lumber company bought a large-capacity tender that carried 1 1/4 cords of wood. Thus the most dominant visible feature on the locomotive is an enormous Radley & Hunter spark-arresting balloon stack. The Baldwin specs stressed the need for such a stack at several points. The fuel was "'green blocks' right from company's mill [,] being from 12" to 48" in length." It rode in a tender fitted with a wood rack around its top, "arranged for carrying plenty of wood."

A hidden concomitant to most logging-engine orders appears in the Baldwin specs: "Springs to be extra heavy on acc[ount] of very rough track."

Specifications by Steve Llanso of Sweat House Media
Locobase ID11,095
RailroadMarion County Lumber Company
Number in Class1
Road Numbers3
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)11.17
Engine Wheelbase (ft)17.33
Ratio of driving wheelbase to overall engine wheebase 0.64
Overall Wheelbase (engine & tender) (ft)37.04
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)39,000
Engine Weight (lbs)48,000
Tender Loaded Weight (lbs)42,000
Total Engine and Tender Weight (lbs)90,000
Tender Water Capacity (gals)2000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)22
Geometry Relating to Tractive Effort
Driver Diameter (in)36
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)12" x 18"
Tractive Effort (lbs)9792
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.98
Heating Ability
Firebox Area (sq ft)62
Grate Area (sq ft)14
Evaporative Heating Surface (sq ft)420
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)420
Evaporative Heating Surface/Cylinder Volume178.25
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2240
Same as above plus superheater percentage2240
Same as above but substitute firebox area for grate area9920
Power L12974
Power MT504.35

If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.