Atlantic Northern 2-6-0 "Mogul" Locomotives in 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.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID14067
RailroadAtlantic Northern
Number in Class1
Road Numbers1
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15 / 4.57
Engine Wheelbase (ft / m)22.67 / 6.91
Ratio of driving wheelbase to overall engine wheelbase 0.66
Overall Wheelbase (engine & tender) (ft / m)45.52 / 13.87
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)84,000 / 38,102
Engine Weight (lbs / kg)103,000 / 46,720
Tender Loaded Weight (lbs / kg)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)183,000 / 83,007
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)6 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)52 / 1321
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x610
Tractive Effort (lbs / kg)20,408 / 9256.92
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.12
Heating Ability
Tubes (number - dia) (in / mm)198 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.96 / 3.34
Firebox Area (sq ft / m2)115 / 10.68
Grate Area (sq ft / m2)16.60 / 1.54
Evaporative Heating Surface (sq ft / m2)1242 / 115.38
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1242 / 115.38
Evaporative Heating Surface/Cylinder Volume196.83
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 L14492
Power MT353.68

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Wes Barris