Apalachicola Northern 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 100 (Locobase 13559)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 34, p. 176. Works number was 34387 in March 1910.

A Baldwin stock design, this Eight-wheeler was fitted with smaller cylinders than others with the same boiler (for example, the Wichita Falls Route quartet shown in Locobase 13324). It also had a fat, spark-arresting stack. Its career ended prematurely when the 100 was wrecked in 1933.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13559
RailroadApalachicola Northern
Number in Class1
Road Numbers100
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 9.08'
Engine Wheelbase23.08'
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers67000 lbs
Engine Weight104000 lbs
Tender Light Weight80000 lbs
Total Engine and Tender Weight184000 lbs
Tender Water Capacity4000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)56 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter62"
Boiler Pressure180 psi
Cylinders (dia x stroke)17" x 24"
Tractive Effort17116 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.91
Heating Ability
Firebox Area138 sq. ft
Grate Area18 sq. ft
Evaporative Heating Surface1465 sq. ft
Superheating Surface
Combined Heating Surface1465 sq. ft
Evaporative Heating Surface/Cylinder Volume232.36
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3240
Same as above plus superheater percentage3240
Same as above but substitute firebox area for grate area24840
Power L16357
Power MT418.35

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