Data from Park Benjamin (Ed), Appleton's Cyclopedia of Applied Mechanics (New York: D Appleton & Company, 1884), p. 341. Boiler pressure is an estimate.
While no builder is identified as the manufacturer (and no railroad as its customer) of this locomotive, its size marks it as a relatively large engine of the Forney type. But see Locobase 16373 for a very close relative bought by the Sebasticook & Moosehead in 1892.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Forney |
| Locobase ID | 10023 |
| Railroad | |
| Country | USA |
| Whyte | 0-4-4T |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | unk |
| Year | 1884 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.67 / 2.03 |
| Engine Wheelbase (ft / m) | 20.75 / 6.32 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.32 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 44,000 / 19,958 |
| Engine Weight (lbs / kg) | 60,000 / 27,216 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1500 / 5.68 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 50 / 1270 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 20" / 356x508 |
| Tractive Effort (lbs / kg) | 9330 / 4232.02 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.72 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 139 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.12 / 3.08 |
| Firebox Area (sq ft / m2) | 78 / 7.25 |
| Grate Area (sq ft / m2) | 14 / 1.30 |
| Evaporative Heating Surface (sq ft / m2) | 812 / 75.46 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 812 / 75.46 |
| Evaporative Heating Surface/Cylinder Volume | 228.09 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1960 |
| Same as above plus superheater percentage | 1960 |
| Same as above but substitute firebox area for grate area | 10,920 |
| Power L1 | 3939 |
| Power MT | 394.73 |