Sheffield & Tionesta 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 11 (Locobase 14329)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 53, pp. 251+. Works number 42660 in November 1915.

This 41-mile (66-km) short line was based in Nebraska, Pa, northeast of Pittsburgh and near the New York line. It was incorporated in 1900 and built 30 miles of its own, acquired the six miles from the Tionesta Valley & Salmon Creek Railway in a 1901 merger and the five miles owned by the Tionesta Valley and Hickory Railway in 1911.

The lightest rails, as the S&T described them, weighed 52 lb/yard (26 kg/metre). Maximum grades sloped up only 2% and the curves were relatively gentle arcs of 16 degrees (radii of 359 feet/109.4 metres).

The 11 served the line for almost 30 years before it was put up for sale in 1943, three years before the railroad closed.

Specifications by Steve Llanso of Sweat House Media
Locobase ID14329
RailroadSheffield & Tionesta
Number in Class1
Road Numbers11
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 7.33'
Engine Wheelbase21'
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender)43.23'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers43000 lbs
Engine Weight65000 lbs
Tender Light Weight44000 lbs
Total Engine and Tender Weight109000 lbs
Tender Water Capacity2000 gals
Tender Fuel Capacity (oil/coal)5 tons
Minimum weight of rail (calculated)36 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter50"
Boiler Pressure160 psi
Cylinders (dia x stroke)13" x 22"
Tractive Effort10113 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.25
Heating Ability
Firebox Area68 sq. ft
Grate Area13.30 sq. ft
Evaporative Heating Surface724 sq. ft
Superheating Surface
Combined Heating Surface724 sq. ft
Evaporative Heating Surface/Cylinder Volume214.22
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2128
Same as above plus superheater percentage2128
Same as above but substitute firebox area for grate area10880
Power L14198
Power MT430.46

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