New York Central & Hudson River 4-2-4 Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class Niagara (Locobase 15622)

Data from NYC 8 - 1917 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

These were inspection engines rebuilt at West Albany (25 and 29) and Depew (27) in April-May 1914. Niagara (27) came first in April followed by Mohawk (29) and Catskill (25). Mohawk had originally been delivered in July 1892, Niagara in August 1896, and Catskill in October 1897. In the 1902 diagram book, these were described as "pony engines".

The diagram shows the outline of a 19th Century boiler from which the rear driving axle of two had been removed. In place of the separate tender, a short extension carried by two axles was joined to the engine with heavy bracing. A cabin with four windows on each side shrouded all of the boiler. The inspection party sat to either side of the boiler ahead of the firebox. (Locobase has often wondered just how hot these quarters became.)

Specifications by Steve Llanso of Sweat House Media
ClassNiagara
Locobase ID15622
RailroadNew York Central & Hudson River (NYC)
CountryUSA
Whyte4-2-4T
Number in Class3
Road Numbers25, 27, 29
GaugeStd
Number Built
BuilderNYC
Year1914
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase
Engine Wheelbase27.35'
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender)27.35'
Axle Loading (Maximum Weight per Axle)24000 lbs
Weight on Drivers24000 lbs
Engine Weight85500 lbs
Tender Light Weight
Total Engine and Tender Weight85500 lbs
Tender Water Capacity1500 gals
Tender Fuel Capacity (oil/coal)3.5 tons
Minimum weight of rail (calculated)40 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter64"
Boiler Pressure160 psi
Cylinders (dia x stroke)12" x 16"
Tractive Effort4896 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.90
Heating Ability
Firebox Area68 sq. ft
Grate Area12 sq. ft
Evaporative Heating Surface577 sq. ft
Superheating Surface
Combined Heating Surface577 sq. ft
Evaporative Heating Surface/Cylinder Volume275.50
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1920
Same as above plus superheater percentage1920
Same as above but substitute firebox area for grate area10880
Power L17472
Power MT686.37

Reference


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