Railway & Locomotive Historical Society Bulletin #13 (1927) has report by the Delaware railroad of this engine's performance.
Superintendent of Repair Dobbs told Chief Engineer J. Knight and Engineer of Location and Construction Benjamin H. Latrobe that all future engines should be of the 4-2-0 type "in order to insure a greater degree of steadiness in the motion upon the track." Dobbs also expressed "a decided preference to the English form of locomotives as exhibited in the engines of Stevenson's (sic)...."
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Comet |
| Locobase ID | 851 |
| Railroad | New Castle & Frenchtown |
| Country | USA |
| Whyte | 4-2-0 |
| Number in Class | 3 |
| Road Numbers | 6 |
| Gauge | Std |
| Number Built | 3 |
| Builder | NC&F |
| Year | 1835 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 10,000 / 4536 |
| Engine Weight (lbs / kg) | 15,000 / 6804 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 17 / 8.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 75 / 520 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 16" / 279x406 |
| Tractive Effort (lbs / kg) | 2057 / 933.04 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.86 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | |
| 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 | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |