Data from "Pittsburgh Four-Wheel Saddle Tank Engine", Railway & Locomotive Engineering, Vol XIII, No. 1 (January 1900), p. 8. Probably works number 1700 in March 1897, 1701 in April, and 1777-1778 in January 1898.
The saddle-tank on this diminuitive industrial switcher had a flat top that was exactly even with the top of the cab and the stack. Rumary's list of Pittsburgh locomotives identifies these as 0-4-0s (implying a tender), but the number on the cab in the R & LE illustration is 4, suggesting that it was this saddle-tank design that was delivered.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 3 |
| Locobase ID | 10806 |
| Railroad | Jones & McLaughlin Steel |
| Country | USA |
| Whyte | 0-4-0ST |
| Number in Class | 4 |
| Road Numbers | 3-6 |
| Gauge | 23" |
| Number Built | 4 |
| Builder | Pittsburgh |
| Year | 1897 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4 / 1.22 |
| Engine Wheelbase (ft / m) | 4 / 1.22 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 4 / 1.22 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 31,000 / 14,061 |
| Engine Weight (lbs / kg) | 31,000 / 14,061 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 31,000 |
| 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) | 26 / 13 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 28 / 711 |
| Boiler Pressure (psi / kPa) | 180 / 12.40 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 14" / 279x356 |
| Tractive Effort (lbs / kg) | 9257 / 4198.91 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.35 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 74 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7 / 2.13 |
| Firebox Area (sq ft / m2) | 33 / 3.07 |
| Grate Area (sq ft / m2) | 6.46 / 0.60 |
| Evaporative Heating Surface (sq ft / m2) | 301 / 27.97 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 301 / 27.97 |
| Evaporative Heating Surface/Cylinder Volume | 195.45 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1163 |
| Same as above plus superheater percentage | 1163 |
| Same as above but substitute firebox area for grate area | 5940 |
| Power L1 | 2542 |
| Power MT | 361.56 |
