Pittsburgh, Fort Wayne & Chicago 4-4-0 "American" Type Locomotives

Data from the Twelfth Annual Report of the American Railway Master Mechanics' Association, May 13th-May15th, 1879, page 83-84. NB: Boiler pressure is an estimate and the heating surface of the tubes is measured from the inside. Locobase believes this engine is one of the quartet delivered by Baldwin in 1867.

James M. Boone of the P, FtW & C described the boiler for which he gave the specifications as "a good steamer; will make steam freely with nut coal; does the best work with about 4" of coal on the grate."

Specifications
Class
Locobase ID9519
RailroadPittsburgh, Fort Wayne & Chicago
Whyte4-4-0
Road Numbers
Gauge4' 9.2""
BuilderM. Baird & Co
Year1867
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase
Engine Wheelbase
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers46700 lbs
Engine Weight73000 lbs
Tender Light Weight
Total Engine and Tender Weight75000 lbs
Tender Water Capacity
Tender Fuel Capacity (oil/coal)
Minimum weight per yard of rail on which locomotive could run39 lb rail
Geometry Relating to Tractive Effort
Driver Diameter66"
Boiler Pressure120 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort9495 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.92
Heating Ability
Firebox Area86.10 sq. ft
Grate Area15 sq. ft
Evaporative Heating Surface831
Superheating Surface
Combined Heating Surface831
Evaporative Heating Surface/Cylinder Volume148.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1800
Same as above plus superheater percentage1800
Same as above but substitute firebox area for grate area10332
Power L12981
Power MT281.45

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.