Data from Clement Edwin Stretton , The Locomotive Engine and Its Development, a Popular Treatise on the Gradual , Lockwood and Son, 1892, pp 57-58.
Stretton explains that this was the first locomotive for this railway and pulled one of the sections on the line's opening day - 9 March 1835. The boiler and firebox were low-slung, particularly in comparison with the tall stack. The steam dome stood over the leading axle, which was driven by inside cylinders located under the smokebox.
He also claims that Comet and several other similar engines worked "with great efficiency for many years".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Comet |
| Locobase ID | 9057 |
| Railroad | Newcastle & Carlisle |
| Country | Great Britain |
| Whyte | 0-4-0 |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | Std |
| Number Built | 1 |
| Builder | R & W Hawthorn |
| Year | 1835 |
| Valve Gear | Hawthorn |
| 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) | |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 816 / 3.09 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 60 / 410 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12" x 16" / 305x406 |
| Tractive Effort (lbs / kg) | 2448 / 1110.40 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 35 / 3.25 |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | 272 / 25.28 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 272 / 25.28 |
| Evaporative Heating Surface/Cylinder Volume | 129.87 |
| 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 | 2100 |
| Power L1 | 1024 |
| Power MT | |