New Jersey & New York 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 12 (Locobase 12732)

Data from "Heavy Eight-Wheeler for the New Jersey & New York Road," Railway and locomotive engineering, Volume 8 (June 1895), p. 341.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12732
RailroadNew Jersey & New York
Number in Class1
Road Numbers12
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase8'
Engine Wheelbase22.75'
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender)47.58'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers77000 lbs
Engine Weight112000 lbs
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity3000 gals
Tender Fuel Capacity (oil/coal)8 tons
Minimum weight of rail (calculated)64 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter64"
Boiler Pressure160 psi
Cylinders (dia x stroke)18" x 24"
Tractive Effort16524 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.66
Heating Ability
Firebox Area170 sq. ft
Grate Area27 sq. ft
Evaporative Heating Surface1557 sq. ft
Superheating Surface
Combined Heating Surface1557 sq. ft
Evaporative Heating Surface/Cylinder Volume220.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4320
Same as above plus superheater percentage4320
Same as above but substitute firebox area for grate area27200
Power L15812
Power MT332.81

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