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.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 11695 |
| Railroad | North Park Street Railway |
| Country | USA |
| Whyte | 0-4-2T |
| Number in Class | 2 |
| Road Numbers | 1-2 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1890 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.92 / 1.50 |
| Engine Wheelbase (ft / m) | 10.42 / 3.18 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 |
| Overall Wheelbase (engine & tender) (ft / m) | 10.42 / 3.18 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 26,000 / 11,793 |
| Engine Weight (lbs / kg) | 35,000 / 15,876 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 400 / 1.52 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 22 / 11 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 35 / 889 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 16" / 279x406 |
| Tractive Effort (lbs / kg) | 6112 / 2772.36 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.25 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 105 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 6.28 / 1.91 |
| Firebox Area (sq ft / m2) | 42 / 3.90 |
| Grate Area (sq ft / m2) | 9.60 / 0.89 |
| Evaporative Heating Surface (sq ft / m2) | 300 / 27.88 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 300 / 27.88 |
| Evaporative Heating Surface/Cylinder Volume | 170.45 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1248 |
| Same as above plus superheater percentage | 1248 |
| Same as above but substitute firebox area for grate area | 5460 |
| Power L1 | 2197 |
| Power MT | 372.58 |