Data from Alfred Rosling Bennett, "Crampton Locomotives on the Continent", The Railway Magazine, Vol 20 (1907), pp. 303-305.
Bennett notes that the Nord's success with its Cramptons (Locobases 621-622) led the PLM to order very similar engines from the same builder. Operating principally in front of Lyon and south expresses, they built up a reputation for fast running. Indeed, says Bennett, three years after this initial batch was introduced, the PLM ordered twelve more from Cail that were virtually identical save how the springs on the driving axle were arranged.
The first group operated for about 25 years, the second for even longer. The latter were sold to CF de l'Est and some were refitted with Flaman's over-under boiler and continued in service into the 1890s.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 11291 |
| Railroad | Paris-Lyon-Mediterrannee (PLM) |
| Country | France |
| Whyte | 4-2-0 |
| Number in Class | 30 |
| Road Numbers | 1-18, 19-30 |
| Gauge | Std |
| Number Built | 30 |
| Builder | Cail |
| Year | 1854 |
| 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) | 63,934 / 29,000 |
| 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) | 82.30 / 2090 |
| Boiler Pressure (psi / kPa) | 113.10 / 780 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15.75" x 23.62" / 400x600 |
| Tractive Effort (lbs / kg) | 6844 / 3104.39 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 108 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.32 / 3.45 |
| Firebox Area (sq ft / m2) | 69.40 / 6.45 |
| Grate Area (sq ft / m2) | 18.29 / 1.70 |
| Evaporative Heating Surface (sq ft / m2) | 1038 / 96.50 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1038 / 96.50 |
| Evaporative Heating Surface/Cylinder Volume | 194.89 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2069 |
| Same as above plus superheater percentage | 2069 |
| Same as above but substitute firebox area for grate area | 7849 |
| Power L1 | 4034 |
| Power MT | |