Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 15, p. 40.See Locobase 16366 for a skeptical 1877 view of steam dummies and Locobase 11577 for a supporting 1889 discussion of the problems associated with running steam dummies on urban street railways. Works number was 9895 in March 1889.
This street railway opened in 1888 to provide "noiseless" transport from Berkeley Lake in the newly developing Berkeley Park residential area along a 3 1/4-mile right-of-way to Gallup Ave in downtown Denver. By the time this steam dummy was delivered, traffic had grown to 3,000 passengers.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Berkeley |
| Locobase ID | 11595 |
| Railroad | Denver & Berkeley Park Rapid Transit |
| Country | USA |
| Whyte | 0-4-2T |
| Number in Class | 1 |
| Road Numbers | 3 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1889 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.50 / 1.37 |
| Engine Wheelbase (ft / m) | 11.67 / 3.56 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | 11.67 / 3.56 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 14,490 / 6573 |
| Weight on Drivers (lbs / kg) | 26,690 / 12,106 |
| Engine Weight (lbs / kg) | 34,180 / 15,504 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 450 / 1.70 |
| 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) | 4.37 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 67 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.58 / 2.62 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 9.60 / 0.89 |
| Evaporative Heating Surface (sq ft / m2) | |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | |
| Evaporative Heating Surface/Cylinder Volume | |
| 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 | |
| Power L1 | |
| Power MT | |