Bath & Hammondport 0-4-4 "Forney" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Frank (Locobase 11771)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 9, p. 252. Baldwin works number was 4971 in February 1880.

A small Forney with a relatively large water capacity, Frank served New York's B & H for about 8 years. When the B & H converted to standard gauge in 1888, Frank moved on to the Sheridan & Shea Company, located nearby.

Specifications by Steve Llanso of Sweat House Media
Locobase ID11771
RailroadBath & Hammondport
Number in Class1
Road Numbers3
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase4'
Engine Wheelbase14.33'
Ratio of driving wheelbase to overall engine wheebase 0.28
Overall Wheelbase (engine & tender)14.33'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers16000 lbs
Engine Weight25000 lbs
Tender Light Weight
Total Engine and Tender Weight25000 lbs
Tender Water Capacity600 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)13 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter30"
Boiler Pressure130 psi
Cylinders (dia x stroke)9" x 14"
Tractive Effort4177 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.83
Heating Ability
Firebox Area27 sq. ft
Grate Area 6.70 sq. ft
Evaporative Heating Surface197 sq. ft
Superheating Surface
Combined Heating Surface197 sq. ft
Evaporative Heating Surface/Cylinder Volume191.11
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation871
Same as above plus superheater percentage871
Same as above but substitute firebox area for grate area3510
Power L12093
Power MT576.78

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