Long Island 2-6-2 "Prairie" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class S51 (Locobase 9078)

Data from Milton J. Foreman, , William Augustus Evans, Paul P Bird, Gilbert E Ryder, Herbert H Evans, The Electrification of Railway Terminals (Chicago: R R Donnelly & Sons, 1908), p 77. See also E E R Tratman, "Tank Locomotives", Official Proceedings of the Western Railway Club (Chicago: W F Hall Printing Company, 1903), pp. 342 et seq; and DeGolyer, Volume 26, p. 269. Baldwin works numbers 23929-23930, 24008 in March 1904 and 24056, 24082 in April.

This locomotive was cited as one of many examples of tank locomotives whose characteristics were decried as dirty and inefficient in this promotion of electrification. This class was sold to the Central of New Jersey in November 1911 as their class J-1 (220-224), joining the 20 engines of identical design purchased in 1902.

CNJ's superheater makeover (Locobase 5312) led to long service; the CNJ only scrapped them in July 1945.

Specifications by Steve Llanso of Sweat House Media
ClassS51
Locobase ID9078
RailroadLong Island
CountryUSA
Whyte2-6-2T
Number in Class5
Road Numbers20-24
GaugeStd
Number Built5
BuilderBurnham, Williams & Co
Year1904
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)14
Engine Wheelbase (ft)31.67
Ratio of driving wheelbase to overall engine wheebase 0.44
Overall Wheelbase (engine & tender) (ft)31.67
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)130,365
Engine Weight (lbs)188,815
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)188,815
Tender Water Capacity (gals)2875
Tender Fuel Capacity (oil/coal) (gals/tons)5
Minimum weight of rail (calculated) (lb/yd)72
Geometry Relating to Tractive Effort
Driver Diameter (in)63
Boiler Pressure (psi)200
High Pressure Cylinders (dia x stroke) (in)18" x 26"
Tractive Effort (lbs)22,731
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.74
Heating Ability
Firebox Area (sq ft)137.40
Grate Area (sq ft)54.50
Evaporative Heating Surface (sq ft)1821
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1821
Evaporative Heating Surface/Cylinder Volume237.80
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10,900
Same as above plus superheater percentage10,900
Same as above but substitute firebox area for grate area27,480
Power L16878
Power MT348.94


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