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 (ft) 8.25
Engine Wheelbase (ft)22.25
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender) (ft)46.42
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)53,000
Engine Weight (lbs)84,000
Tender Loaded Weight (lbs)91,700
Total Engine and Tender Weight (lbs)175,700
Tender Water Capacity (gals)3540
Tender Fuel Capacity (oil/coal) (gals/tons)10
Minimum weight of rail (calculated) (lb/yd)44
Geometry Relating to Tractive Effort
Driver Diameter (in)62
Boiler Pressure (psi)130
High Pressure Cylinders (dia x stroke) (in)17" x 24"
Tractive Effort (lbs)12,362
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.29
Heating Ability
Firebox Area (sq ft)118
Grate Area (sq ft)15.60
Evaporative Heating Surface (sq ft)1062
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1062
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 area15,340
Power L13520
Power MT292.84

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