Delaware, Lackawanna &Western 4-8-0 "Mastodon" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 801 (Locobase 2986)

Data from the Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899). See also "Twelve-Wheel Freight Locomotive--Delaware, Lackawanna & Western Railway", Railway Master Mechanic, Volume XXIII, No 6 (November 1899), pp.347-350. Works numbers were 3304-3318 in September 1899. Dickson of Scranton, Pa built five more--works numbers 1092-1096--in 1900.

Brooks builder info from B.Rumary, 25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND and Jeremy Lambert as supplied by Allen Stanley in March 2004.

This camelback featured a wide Wooten firebox (123"/3,124 mm long by 97"/2,464 mm wide) for burning fine anthracite coal. Identical to the CNJ's 829 class. Drury (1993) comments that "they were too powerful for their weight and were quite slippery."

Later modifications included reducing cylinder size and boiler pressure. The Brooks batch were all retired in 1923.

Specifications by Steve Llanso of Sweat House Media
Class801
Locobase ID2986
RailroadDelaware, Lackawanna &Western
CountryUSA
Whyte4-8-0
Number in Class20
Road Numbers801-820
GaugeStd
Number Built20
Builderseveral
Year1899
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)15
Engine Wheelbase (ft)25.75
Ratio of driving wheelbase to overall engine wheebase 0.58
Overall Wheelbase (engine & tender) (ft)50.37
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)166,000
Engine Weight (lbs)205,000
Tender Loaded Weight (lbs)112,000
Total Engine and Tender Weight (lbs)317,000
Tender Water Capacity (gals)5000
Tender Fuel Capacity (oil/coal) (gals/tons)10
Minimum weight of rail (calculated) (lb/yd)69
Geometry Relating to Tractive Effort
Driver Diameter (in)54
Boiler Pressure (psi)200
High Pressure Cylinders (dia x stroke) (in)21" x 32"
Tractive Effort (lbs)44,427
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.74
Heating Ability
Firebox Area (sq ft)218
Grate Area (sq ft)82.40
Evaporative Heating Surface (sq ft)3168
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)3168
Evaporative Heating Surface/Cylinder Volume246.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation16,480
Same as above plus superheater percentage16,480
Same as above but substitute firebox area for grate area43,600
Power L15975
Power MT317.41

Photos

Reference


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