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

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
Locobase ID11,152
RailroadRochester & Lake Ontario
Number in Class1
Road Numbers31
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)5
Engine Wheelbase (ft)14.75
Ratio of driving wheelbase to overall engine wheebase 0.34
Overall Wheelbase (engine & tender) (ft)14.75
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)38,000
Engine Weight (lbs)52,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)52,000
Tender Water Capacity (gals)700
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)32
Geometry Relating to Tractive Effort
Driver Diameter (in)43
Boiler Pressure (psi)140
High Pressure Cylinders (dia x stroke) (in)14" x 18"
Tractive Effort (lbs)9764
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.89
Heating Ability
Firebox Area (sq ft)60.70
Grate Area (sq ft)13.70
Evaporative Heating Surface (sq ft)545
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)545
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

If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.