Data taken from Edouard Sauvage, "Four-Cylinder Compound Locomotives in France", Railroad Gazette, Volume XXXII [32], No.39 (28 September 1900), pp. 629-631 using information compiled through direct communications with the various designers.
This design is virtually identical to the Sud and Midi compounds of the same vintage.
See also the table presented on pages 369, 371 of the Groupe VI. - GTnie civil. - Moyens de transport. DeuxiFme partie. Classes 32 (Tome I), part of the series of Rapports du Jury Internationale of the Exposition Unverselle Internationale de 1900 Paris Exposition, hosted on the website of Le Conservatoire numTrique des Arts & MTtiers ([], accessed 21 August 2005).
According to La Nature of the same year, the design cut the time to run between Paris and Bordeaux from 8 hrs 14 minutes to 7 hrs 5 min, averaging 82 km /h (51 mph). Paris to Nantes was cut from 7:23 to 5:25 at an average speed of 79 km/h (49 mph).
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | C.20 |
Locobase ID | 3895 |
Railroad | Paris-Orleans |
Country | France |
Whyte | 4-4-0 |
Number in Class | 20 |
Road Numbers | 1-20 |
Gauge | Std |
Number Built | 20 |
Builder | Cail |
Year | 1898 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | |
Engine Wheelbase (ft / m) | 24.60 / 7.50 |
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) | 73,855 / 33,500 |
Engine Weight (lbs / kg) | 121,254 / 55,000 |
Tender Loaded Weight (lbs / kg) | 84,657 / 38,400 |
Total Engine and Tender Weight (lbs / kg) | 205,911 / 93,400 |
Tender Water Capacity (gals / ML) | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 5 / 5 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 62 / 31 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 82.30 / 2090 |
Boiler Pressure (psi / kPa) | 217.60 / 1500 |
High Pressure Cylinders (dia x stroke) (in / mm) | 13.75" x 25.13" / 349x638 |
Low Pressure Cylinders (dia x stroke) (in / mm) | 21.63" x 25.13" / 549x638 |
Tractive Effort (lbs / kg) | 15,209 / 6898.69 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.86 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 111 - 2.75" / 70 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 12.80 / 3.90 |
Firebox Area (sq ft / m2) | 132.78 / 12.34 |
Grate Area (sq ft / m2) | 26.50 / 2.46 |
Evaporative Heating Surface (sq ft / m2) | 1861 / 172.96 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1861 / 172.96 |
Evaporative Heating Surface/Cylinder Volume | 430.90 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 5766 |
Same as above plus superheater percentage | 5766 |
Same as above but substitute firebox area for grate area | 28,893 |
Power L1 | 7051 |
Power MT | 420.95 |