Data from Gustav Reder (Michael Reynolds, trans), The world of steam locomotives (New York: Putnam, 1974).
Buddicom and Alcard were English engine builders who relocated to France (Sotteville and Chartreux) and obtained a license to build "Allan-Crewe" type external-frame 2-2-2s.
In the French design, cylinder proportions differed and the cylinders were attached higher on a carrier between a sub-frame and the inner main frame. The inside valve gear operated outside slide valves through a rocking arm. 40 entered service and proved capable of the relatively high speed of 40 mph (65 kph) in service. When the Paris-Rouen was taken over by the Ouest Railway, these engines were renumbered 101-140. 25 were converted to tank engines in 1860-1865, 10 of these serving until 1914.
Buddicom and Alcard built 30 identical engines for the Amiens-Boulogne in 1838, these too being converted to tank engines in the 1860s.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Buddicom |
| Locobase ID | 608 |
| Railroad | Paris-Rouen |
| Country | France |
| Whyte | 2-2-2 |
| Number in Class | 40 |
| Road Numbers | 1 |
| Gauge | Std |
| Number Built | 40 |
| Builder | Alcard Buddicom |
| Year | 1843 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 12.99 / 3.96 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 11.09 / 3.38 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 14,550 / 6600 |
| Weight on Drivers (lbs / kg) | 15,435 / 7001 |
| Engine Weight (lbs / kg) | 31,974 / 14,503 |
| 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) | 26 / 13 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 69.60 / 480 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12.52" x 20.98" / 318x533 |
| Tractive Effort (lbs / kg) | 3088 / 1400.69 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.00 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | / 49 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | / 2.62 |
| Firebox Area (sq ft / m2) | 53.26 / 4.95 |
| Grate Area (sq ft / m2) | 9.25 / 0.86 |
| Evaporative Heating Surface (sq ft / m2) | 524 / 48.73 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 524 / 48.73 |
| Evaporative Heating Surface/Cylinder Volume | 175.28 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 644 |
| Same as above plus superheater percentage | 644 |
| Same as above but substitute firebox area for grate area | 3707 |
| Power L1 | 1932 |
| Power MT | 275.95 |