Lackawanna & Pittsburgh 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class D-3 (Locobase 7879)

Data from W&LE 8 - 1923 & 10 1924 Locomotive Diagram books supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 82-83 in July 1884.

Forty years after the first deliveries, the Raildata collection of Americans on the W&LE had a variegated look and several pairs of road number for each subclass. This pair owned even more because of its prior history with the L&P. In 1885, the two passed into Lake Erie ownership and took the first brace of five sets of road numbers.

Compared to the W&LE batch (Locobase 7878), delivered a year earlier, these engines had fewer and shorter tubes.

1402 was scrapped in December 1924 and 1401 followed in October 1926.

Specifications by Steve Llanso of Sweat House Media
Locobase ID7879
RailroadLackawanna & Pittsburgh
Number in Class2
Road Numbers205-206/29-30/31-32/58-59/321-322/ 1401-1404
Number Built2
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 8.25'
Engine Wheelbase22.25'
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender)46.42'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers53000 lbs
Engine Weight84000 lbs
Tender Light Weight91700 lbs
Total Engine and Tender Weight175700 lbs
Tender Water Capacity3540 gals
Tender Fuel Capacity (oil/coal)10 tons
Minimum weight of rail (calculated)44 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter62"
Boiler Pressure130 psi
Cylinders (dia x stroke)17" x 24"
Tractive Effort12362 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.29
Heating Ability
Firebox Area118 sq. ft
Grate Area15.60 sq. ft
Evaporative Heating Surface1062 sq. ft
Superheating Surface
Combined Heating Surface1062 sq. ft
Evaporative Heating Surface/Cylinder Volume168.44
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2028
Same as above plus superheater percentage2028
Same as above but substitute firebox area for grate area15340
Power L13520
Power MT292.84

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