Data from Arthur E Kyffin, "Some Vulcan Foundry Engines", The Railway Engineer, Volume 17, No 9 (September 1896), p. 260. Works numbers were 55-60 in 1838.
The locomotives were named Sussex, Thetis, Tartar, Transit, Tiger, and Locke. Tayleur Company's cutaway drawing of the Locke shows two thin domes, one over the firebox, the other over the leading axle. The front dome has the dry pipe and a separate stand over the driver holds the safety valve, so does the rear dome simply increase steam reserve?
Five more followed in 1839 (works numbers 78-82) with slightly smaller boilers holding 105 2" tubes, firebox area of 50.28 sq ft (4.67 sq m), and total evaporative heating surface area of 464.94 sq ft (43.19 sq m). The quintet's names were Pegasus, Samslick, Renown, Cossack, and Ganymede.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Sussex |
| Locobase ID | 16091 |
| Railroad | London & Southampton |
| Country | Great Britain |
| Whyte | 2-2-2 |
| Number in Class | 6 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 6 |
| Builder | Tayleur |
| Year | 1838 |
| 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) | |
| Engine Weight (lbs / kg) | |
| 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) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 66 / 1676 |
| Boiler Pressure (psi / kPa) | 75 / 520 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 18" / 330x457 |
| Tractive Effort (lbs / kg) | 2938 / 1332.66 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 138 - 1.625" / 41 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.50 / 2.59 |
| Firebox Area (sq ft / m2) | 53.53 / 4.97 |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | 551 / 51.19 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 551 / 51.19 |
| Evaporative Heating Surface/Cylinder Volume | 199.26 |
| 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 | 4015 |
| Power L1 | 2442 |
| Power MT | |