North Park Street Railway 0-4-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 11695)

Data from Baldwin Locomotive Works Specification for Engines, 1890, as digitized by the DeGolyer Library of Southern Methodist University Vol 16, p. 50. Works numbers were 10922 and 10935 May 1890..

This Grand Rapids, Mich street railway purchased these two steam dummies to service the line that had just opened. Like many street railways, the NPSR operated between the downtown and an amusement area it owned in more salubrious surroundings.

After the system was electrified in the late 1890s, the 1 went to Empire Lumber and the 2 was sold to H AS Batchelor & Company.

Specifications by Steve Llanso of Sweat House Media
Locobase ID11,695
RailroadNorth Park Street Railway
Number in Class2
Road Numbers1-2
Number Built2
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 4.92
Engine Wheelbase (ft)10.42
Ratio of driving wheelbase to overall engine wheebase 0.47
Overall Wheelbase (engine & tender) (ft)10.42
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)26,000
Engine Weight (lbs)35,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)400
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)22
Geometry Relating to Tractive Effort
Driver Diameter (in)35
Boiler Pressure (psi)130
High Pressure Cylinders (dia x stroke) (in)11" x 16"
Tractive Effort (lbs)6112
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.25
Heating Ability
Firebox Area (sq ft)42
Grate Area (sq ft) 9.60
Evaporative Heating Surface (sq ft)300
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)300
Evaporative Heating Surface/Cylinder Volume170.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1248
Same as above plus superheater percentage1248
Same as above but substitute firebox area for grate area5460
Power L12198
Power MT372.75

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