Atlantic Northern 2-6-0 "Mogul" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 14067)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 45, p. 166. Works number was 40860 in November 1913.

Contrary to what one might expect, the Atlantic in this shortline's name referred to its home city in Iowa. The specs depict a lightly built road from Atlantic to Kimballton consisting of 56 lb/yard (28 kg/metre) rail making up "very rough" track, 20 degree curves, and 2% grades over the 18 miles of line located east of Omaha, Nebraska.

The IaGenweb Project reports on a photograph from Kimballton on the day the AN "arrived" as required under the 1907 incorporation, noting that its fulfillment of the terms was made possible by an emergency extension of Kimballton's city limits toward Elk Horn at the last minute. (see

After serving local farmers for about 30 years, the AN closed in 1936.

Specifications by Steve Llanso of Sweat House Media
Locobase ID14,067
RailroadAtlantic Northern
Number in Class1
Road Numbers1
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)15
Engine Wheelbase (ft)22.67
Ratio of driving wheelbase to overall engine wheebase 0.66
Overall Wheelbase (engine & tender) (ft)45.52
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)84,000
Engine Weight (lbs)103,000
Tender Loaded Weight (lbs)80,000
Total Engine and Tender Weight (lbs)183,000
Tender Water Capacity (gals)4000
Tender Fuel Capacity (oil/coal) (gals/tons)6
Minimum weight of rail (calculated) (lb/yd)47
Geometry Relating to Tractive Effort
Driver Diameter (in)52
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)17" x 24"
Tractive Effort (lbs)20,408
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.12
Heating Ability
Firebox Area (sq ft)115
Grate Area (sq ft)16.60
Evaporative Heating Surface (sq ft)1242
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1242
Evaporative Heating Surface/Cylinder Volume196.99
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2988
Same as above plus superheater percentage2988
Same as above but substitute firebox area for grate area20,700
Power L14496
Power MT354.00

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