Data from E L Ahrons, The British Steam Locomotive from 1825 to 1925 (London: Ian Allan, 1926) and "0-6-4 Tank Engine, South Eastern and Chatham Railway," Locomotive Magazine, Volume 19 (15 November 1913), p. 250 and (15 December 1913), p. 272.
HS Wainwright design for an inside-cylinder tank engine with Belpaire boiler. Steam entered the cylinders through 8" (203 mm) piston valves. Water capacity was quite large and was made up of two side tanks (350 Imp gallons or 420 US gallons/1,590 litres each) and a big rear tank carrying 1,300 Imperial gallons (1,560 US gallons or 5,905 litres.
Performance in SE&C service proved underwhelming, probably because the boiler had to work too hard to supply rather large cylinders even after the two jugs were relined to 19 1/2" (495 mm) diameter.
Although all served the Southern Railway after grouping and all received British Railway numbers in 1948, the class had all left service by the end of July 1951.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | J |
| Locobase ID | 2320 |
| Railroad | South Eastern & Chatham |
| Country | Great Britain |
| Whyte | 0-6-4T |
| Number in Class | 5 |
| Road Numbers | 129, 207, 597, 611, 614/A596-A599/31596-31599 |
| Gauge | Std |
| Number Built | 5 |
| Builder | Ashford Works |
| Year | 1913 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16.50 / 5.03 |
| Engine Wheelbase (ft / m) | 27.75 / 8.46 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.59 |
| Overall Wheelbase (engine & tender) (ft / m) | 27.75 / 8.46 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 40,320 / 18,289 |
| Weight on Drivers (lbs / kg) | 116,256 / 52,733 |
| Engine Weight (lbs / kg) | 158,368 / 71,835 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2400 / 9.09 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.80 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 65 / 32.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 66 / 1676 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20.5" x 26" / 521x660 |
| Tractive Effort (lbs / kg) | 22,515 / 10212.64 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.16 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 112 / 10.41 |
| Grate Area (sq ft / m2) | 17.60 / 1.64 |
| Evaporative Heating Surface (sq ft / m2) | 999 / 92.81 |
| Superheating Surface (sq ft / m2) | 234 / 21.74 |
| Combined Heating Surface (sq ft / m2) | 1233 / 114.55 |
| Evaporative Heating Surface/Cylinder Volume | 100.58 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2816 |
| Same as above plus superheater percentage | 3351 |
| Same as above but substitute firebox area for grate area | 21,325 |
| Power L1 | 6494 |
| Power MT | 369.45 |