Chicago & West Michigan 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 117 (Locobase 9511)

Data from "Haskell's Locomotive" Railway and Locomotive Engineering, July 1899, page 315.

Mr B Haskell, Superintendent of Motive Power, designed this small locomotive that had a relatively low cylinder volume. They were reported to achieve 60 engine-miles/ton vs the 40 em/ton put up by 17" cylinder engines

Specifications by Steve Llanso of Sweat House Media
Locobase ID9511
RailroadChicago & West Michigan
Number in Class4
Road Numbers117
Number Built4
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)8
Engine Wheelbase (ft)22.67
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)51,350
Engine Weight (lbs)89,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)43
Geometry Relating to Tractive Effort
Driver Diameter (in)60
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)16" x 24"
Tractive Effort (lbs)15,667
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.28
Heating Ability
Firebox Area (sq ft)
Grate Area (sq ft)16
Evaporative Heating Surface (sq ft)1867
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1867
Evaporative Heating Surface/Cylinder Volume334.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2880
Same as above plus superheater percentage2880
Same as above but substitute firebox area for grate area
Power L1
Power MT

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