Data from "Early Stockton & Darlington Locomotives", The Locomotive Magazine,Vol VIII (24 Jan 1903), p.61
These were originally purchased by the London, Brighton & South Coast Railway for passenger work, but the S & D, which bought them in 1851, used them for freight. The locomotive's tall dome sat well forward, just behind the stack. Two more with inside cylinders and similar dimensions -- Woodlands and Hallgarth -- were produced by Hopetown Foundry under Alfred Kitching's directions.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Stephenson |
| Locobase ID | 10260 |
| Railroad | Stockton & Darlington |
| Country | Great Britain |
| Whyte | 2-4-0 |
| Number in Class | 6 |
| Road Numbers | 65-70 |
| Gauge | Std |
| Number Built | 6 |
| Builder | Gilkes, Wilson & Co |
| Year | 1848 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.83 / 1.78 |
| Engine Wheelbase (ft / m) | 11.75 / 3.58 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 23,296 / 10,567 |
| Engine Weight (lbs / kg) | 61,264 / 27,789 |
| Tender Loaded Weight (lbs / kg) | 38,080 / 17,273 |
| Total Engine and Tender Weight (lbs / kg) | 99,344 / 45,062 |
| Tender Water Capacity (gals / ML) | 1440 / 5.45 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 19 / 9.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 60 / 1524 |
| Boiler Pressure (psi / kPa) | 95 / 660 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
| Tractive Effort (lbs / kg) | 6662 / 3021.84 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.50 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.25 / 4.34 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 12.25 / 1.14 |
| Evaporative Heating Surface (sq ft / m2) | 1061 / 98.61 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1061 / 98.61 |
| Evaporative Heating Surface/Cylinder Volume | 235.79 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1164 |
| Same as above plus superheater percentage | 1164 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |