Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 25. p. 214. See also "Inspection Car for the Rochester & Pittsburg Coal & Iron Company," Railway and Locomotive Engineering, Volume 17, No 6 (June 1903), p. 259. (Thanks to Chris Hohl for his 19 July 2017 email and pub cite for the R&LE article correcting the wheel arrangement and correcting the adhesion weight.) Works number was 21775 in March 1903.
Like most inspection engines, this locomotive had a passenger car body mounted on a conventioal boiler and firebox. Obviously, it had to be well-insulated. The specs noted that the passenger compartment would have six windows while the cab had five. The radial lead truck that used three equalizing springs.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 200 |
| Locobase ID | 12657 |
| Railroad | Rochester & Pittsburgh Coal & Iron |
| Country | USA |
| Whyte | 2-2-4T |
| Number in Class | 1 |
| Road Numbers | 200 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1903 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 28.25 / 8.61 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 28.25 / 8.61 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 25,400 / 11,521 |
| Engine Weight (lbs / kg) | 72,600 / 32,931 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 500 / 1.89 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 42 / 21 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 16" / 229x406 |
| Tractive Effort (lbs / kg) | 3264 / 1480.53 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.78 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 144 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 5.54 / 1.69 |
| Firebox Area (sq ft / m2) | 51.60 / 4.79 |
| Grate Area (sq ft / m2) | 9.61 / 0.89 |
| Evaporative Heating Surface (sq ft / m2) | 360 / 33.44 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 360 / 33.44 |
| Evaporative Heating Surface/Cylinder Volume | 305.08 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1538 |
| Same as above plus superheater percentage | 1538 |
| Same as above but substitute firebox area for grate area | 8256 |
| Power L1 | 7542 |
| Power MT | 654.62 |