Long Island 4-4-2 "Atlantic" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class E51/E51sa (Locobase 4118)

Date from "Atlantic Types Locomotives for the Long Island", Railroad Gazette, Volume 33, No 27 (5 July 1901), p. 483. See also DeGolyer, Volumes 23, p. 270; 24, p. 280. (Thanks to Chris Hohl for researching the full details of this class from the Baldwin specifications.) Works numbers were 18937-18938 in April 1901 and 20488, 20496 in May 1902.

The RG account had a brief description of these camelback Atlantics, which ran the length of the line from Long Island City clear out to Montauk.

According to Connelly, #1 was rebuilt with superheat in 1919, #2 in 1920, #4 in 1922, and #3 in 1923. #2 wrecked on 13 August 1926 when the double-headed Greenport Express derailed at Calverton, 5 miles east of Riverhead; the engineer, fireman, and 4 passengers were killed, at least 10 were injured. 1 was retired in July 1929, after #4 (March 1928) and #3 in April 1929.

Specifications by Steve Llanso of Sweat House Media
Locobase ID4118
RailroadLong Island
Number in Class4
Road Numbers1-4
Number Built4
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 6.58
Engine Wheelbase (ft)25.08
Ratio of driving wheelbase to overall engine wheebase 0.26
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)97,850
Engine Weight (lbs)166,110
Tender Loaded Weight (lbs)99,890
Total Engine and Tender Weight (lbs)266,000
Tender Water Capacity (gals)5000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)82
Geometry Relating to Tractive Effort
Driver Diameter (in)76
Boiler Pressure (psi)200
High Pressure Cylinders (dia x stroke) (in)19.5" x 26"
Tractive Effort (lbs)22,115
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.42
Heating Ability
Firebox Area (sq ft)180.50
Grate Area (sq ft)75.50
Evaporative Heating Surface (sq ft)2657
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)2657
Evaporative Heating Surface/Cylinder Volume295.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation15,100
Same as above plus superheater percentage15,100
Same as above but substitute firebox area for grate area36,100
Power L110,034
Power MT452.14

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