Newton & North Western 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class none (Locobase 101)

See the description of the N&NW at . Although this pair of locomotives was purchased for the N&NW, that Iowa railroad was shortly to be absorbed by the interurban-minded Fort Dodge Des Moines & Southern.

Before long, these Eight-wheelers were absorbed by the Chicago & North Western Railway.

Specifications by Steve Llanso of Sweat House Media
Locobase ID101
RailroadNewton & North Western
Number in Class2
Road Numbers2
Number Built2
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft) 8.50
Engine Wheelbase (ft)22.92
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender) (ft)45.40
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)57,000
Engine Weight (lbs)90,500
Tender Loaded Weight (lbs)76,500
Total Engine and Tender Weight (lbs)167,000
Tender Water Capacity (gals)3500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)48
Geometry Relating to Tractive Effort
Driver Diameter (in)62
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)17" x 24"
Tractive Effort (lbs)15,214
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.75
Heating Ability
Firebox Area (sq ft)
Grate Area (sq ft)17.10
Evaporative Heating Surface (sq ft)1224
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1224
Evaporative Heating Surface/Cylinder Volume194.13
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2736
Same as above plus superheater percentage2736
Same as above but substitute firebox area for grate area
Power L1
Power MT