Ouest 2-8-0 Locomotives in France
Class Details by Steve Llanso of Sweat House Media
Class 4501 / 140A (Locobase 6066)
Data from I N Jevica's [
] (visited 29 May 2004) and [] (visited November 2002) by Roland Arzul.
Called "Italians", these von Borries cross-compound Consolidations were the first French engines to be fitted with the Zara truck, which combined the leading truck with the first coupled axle. They had dramatically high-pitched boilers, the impression accentuated by the tall valve-cylinder casting.
According to Arzul, the 4501's procurement resulted from a sudden realization that increased train loads were overwhelming the six-coupleds then in service in Brittany and Normandy. The result was a freight-hauler with small drivers limited to 60 km/h (38 mph), but offering a solid increase in power for the grade.
Ultimately, they were replaced in their initial service by larger Consolidations, notably those of American design, but many served for decades more.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4501 / 140A |
| Locobase ID | 6066 |
| Railroad | Ouest |
| Country | France |
| Whyte | 2-8-0 |
| Number in Class | 30 |
| Road Numbers | 4501-4530 / 140A-001 to 30 |
| Gauge | Std |
| Number Built | 30 |
| Builder | Henschel & Sohn |
| Year | 1909 |
| Valve Gear | Walschaert |
| 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) | 145,505 / 66,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 3960 / 15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5.50 / 5 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 53.90 / 1370 |
| Boiler Pressure (psi / kPa) | 232.10 / 1600 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19.29" x 27.56" / 490x700 (1) |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 29.53" x 27.56" / 750x700 (1) |
| Tractive Effort (lbs / kg) | 26,309 / 11933.58 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 135.63 / 12.60 |
| Grate Area (sq ft / m2) | 30.14 / 2.80 |
| Evaporative Heating Surface (sq ft / m2) | 2185 / 203.03 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 2185 / 203.03 |
| Evaporative Heating Surface/Cylinder Volume | 468.77 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 6995 |
| Same as above plus superheater percentage | 6995 |
| Same as above but substitute firebox area for grate area | 31,480 |
| Power L1 | 5465 |
| Power MT | |