New Jersey & New York 4-4-0 "American" Locomotives in 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
Class12
Locobase ID12,732
RailroadNew Jersey & New York
CountryUSA
Whyte4-4-0
Number in Class1
Road Numbers12
GaugeStd
Number Built1
BuilderRogers
Year1895
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)22.75 / 6.93
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender) (ft / m)47.58 / 14.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)77,000 / 34,927
Engine Weight (lbs / kg)112,000 / 50,802
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)8 / 7.30
Minimum weight of rail (calculated) (lb/yd / kg/m)64 / 32
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)64 / 1626
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)16,524 / 7495.17
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.66
Heating Ability
Firebox Area (sq ft / m2)170 / 15.79
Grate Area (sq ft / m2)27 / 2.51
Evaporative Heating Surface (sq ft / m2)1557 / 144.65
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1557 / 144.65
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 area27,200
Power L15812
Power MT332.81