Data from W B Paley, "Engines of the London, Chatham & Dover Ry," Railway World, Volume VI [6], No 2 (February 1897), p. 35.
These Cramptons were very similar to those built by Stephensons for neighboring South Eastern and named Folkestone. They had the same unusual drive train that featured a crank axle halfway between the inside cylinders and single driving axle set well to the rear.
"These engines were speedily found to be totally unfit for the service they were intended to work, viz, express passenger trains, on account of the very small proportion of weight available for adhesion consequent on the position of the driving wheels." So these were later rebuilt by Martley as four-wheel coupled engines.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Crampton style |
| Locobase ID | 3002 |
| Railroad | London, Chatham, & Dover |
| Country | Great Britain |
| Whyte | 4-2-0 |
| Number in Class | 5 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 5 |
| Builder | Robert Stephenson & Co |
| Year | 1862 |
| Valve Gear | Stephenson |
| 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) | 78.50 / 1994 |
| Boiler Pressure (psi / kPa) | 120 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x559 |
| Tractive Effort (lbs / kg) | 7318 / 3319.39 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 189 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.83 |
| Firebox Area (sq ft / m2) | 129 / 11.99 |
| Grate Area (sq ft / m2) | 26 / 2.42 |
| Evaporative Heating Surface (sq ft / m2) | 1198 / 111.34 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1198 / 111.34 |
| Evaporative Heating Surface/Cylinder Volume | 234.00 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3120 |
| Same as above plus superheater percentage | 3120 |
| Same as above but substitute firebox area for grate area | 15,480 |
| Power L1 | 5652 |
| Power MT | |