Rochester & Lake Ontario 0-4-4 "Forney" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 31 (Locobase 11152)

Data from Schenectady Locomotive Works, Illustrated Catalogue of Simple and Compound Locomotives (Philadelphia: J B Lippincott, 1897), pp. 196-197. Works number was 1936 in September 1884.

Known as the Bay Railroad, this line connected the city with the beach at Lake Ontario. This was a typical short-haul Forney tank.

Specifications by Steve Llanso of Sweat House Media
Class31
Locobase ID11,152
RailroadRochester & Lake Ontario
CountryUSA
Whyte0-4-4T
Number in Class1
Road Numbers31
GaugeStd
Number Built1
BuilderSchenectady
Year1895
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)14.75 / 4.50
Ratio of driving wheelbase to overall engine wheebase 0.34
Overall Wheelbase (engine & tender) (ft / m)14.75 / 4.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)38,000 / 17,237
Engine Weight (lbs / kg)52,000 / 23,587
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)52,000
Tender Water Capacity (gals / ML)700 / 2.65
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)32 / 16
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)43 / 1092
Boiler Pressure (psi / kPa)140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)14" x 18" / 356x457
Tractive Effort (lbs / kg)9764 / 4428.88
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.89
Heating Ability
Firebox Area (sq ft / m2)60.70 / 5.64
Grate Area (sq ft / m2)13.70 / 1.27
Evaporative Heating Surface (sq ft / m2)545 / 50.65
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)545 / 50.65
Evaporative Heating Surface/Cylinder Volume169.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1918
Same as above plus superheater percentage1918
Same as above but substitute firebox area for grate area8498
Power L12655
Power MT308.07