Fernwood & Gulf 2-6-0 "Mogul" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 13603)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 34, p. 280. Works number was 34399 in March 1910.

The specifications for this logging Mogul noted that its intended railroad in Mississippi featured a "Y" with 25 degrees of curvature and track weighing either 45 or 60 lb/yard (22.5 or 30 kg/metre). The F & G was built west-to-east roughly parallel to the north shore of Lake Ponchartrain from Fernwood to Tylertown and Kokomo.

The engine's estimated adhesion weight was entered as 85,000 lb (38,555 kg) and engine weight as 97,000 lb (43,999 kg). Sale price was $10,110. One can only imagine the kaleidescope of feelings that lay behind the note added by "FAH" to the specs on Christmas Eve more than 4 years later. It records the contents of a letter dated 12/13/[19]14 from P E Cheatham in which he stated that the weight on the drivers actually came to 95,000 lb and engine weight amounted to 106,000 lb.

Perhaps unsurprisingly, FAH added "See also note in same letter about stronger springs."

Specifications by Steve Llanso of Sweat House Media
Locobase ID13,603
RailroadFernwood & Gulf
Number in Class1
Road Numbers10
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)12.50
Engine Wheelbase (ft)19.75
Ratio of driving wheelbase to overall engine wheebase 0.63
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)95,000
Engine Weight (lbs)106,000
Tender Loaded Weight (lbs)100,000
Total Engine and Tender Weight (lbs)206,000
Tender Water Capacity (gals)5000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)53
Geometry Relating to Tractive Effort
Driver Diameter (in)56
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)18" x 24"
Tractive Effort (lbs)21,245
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.47
Heating Ability
Firebox Area (sq ft)123.50
Grate Area (sq ft)25.50
Evaporative Heating Surface (sq ft)1189
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1189
Evaporative Heating Surface/Cylinder Volume168.21
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4590
Same as above plus superheater percentage4590
Same as above but substitute firebox area for grate area22,230
Power L14294
Power MT298.95

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