Data from August Perdonnet et Camille Polonceau, Nouveau Portefeuille de L'Ingenieur des Chemins de Fer, Tome Second (Paris: Librairie Scientifique, Industrielle et Agricole, 1866), pp. 530-531. See also Gustav Reder (Michael Reynolds, trans), The World of Steam Locomotives (New York: Putnam, 1974).
Reder wrote that Clapeyron adapted the "Allan-Crewe" external framing and outside cylinders to a "Longboiler" design with indifferent results. A good feature was the manner in which his frame extended the length of the engine and took the strain of trailing cars. Unfortunately, the firebox still overhung behind the trailing axle and the mediocre "Longboiler" riding qualities remained. Clapeyron later moved the trailing axle behind the firebox, lengthening the wheelbase to 15 ft 1 in.
Data from William Fairbairn, Useful Information for Engineers (London: Longmans, Green, & Co, 1866), pp. 132-134 See also "French Express Locomotive by Messrs W Fairbairn and Sons", The Engineer, Volume 129 (2 April 1929), p. 357.
This engine was shown at the 1855 Paris Exhibition as an example of McConnell's short-tube, big-firebox design produced by William Fairbairn. The firebox proper wasn't much bigger, but before the gas could get to the short tubes, it went through a "mixing chamber," a cavity later better known as a combustion chamber. Locobase is most surprised by the large number of small tubes in the boiler.
After the Exhibition, the locomotive went into service on the Nord.
Data from L Chatelier, E Flachat, J Petiet, and C Polonceau, Guide du Mecanicien Constructeur et Conducteur de Machines Locomotives (Paris: Chez Paul Dupont, 1851), pp. 369-370 and tables on 376-387.
These were based on Stephenson's then-current design and were only mediocre in burning the fuel in use when they came on the road. Their performance improved considerably when the railway adopted coke fuel. An extension of the wheelbase from the driving axle to the rear axle by 15.8" (400 mm) and adding counterbalancing improved the locomotive's riding qualities as well.
Principal Dimensions by Steve Llanso of Middle Run Media | |||
---|---|---|---|
Class | Clapeyron | Eugenie | unknown |
Locobase ID | 606 | 9077 | 11341 |
Railroad | Nord | Nord | Nord |
Country | France | France | France |
Whyte | 2-2-2 | 2-2-2 | 2-2-2 |
Number in Class | 1 | ||
Road Numbers | 17-50 | 164 | |
Gauge | Std | Std | Std |
Number Built | 1 | ||
Builder | Hallette | Fairbairn | Cail |
Year | 1846 | 1855 | 1846 |
Valve Gear | Stephenson | ||
Locomotive Length and Weight | |||
Driver Wheelbase (ft / m) | |||
Engine Wheelbase (ft / m) | 10.50 / 3.20 | 15.49 / 4.72 | 9.89 / 3.02 |
Ratio of driving wheelbase to overall engine wheelbase | |||
Overall Wheelbase (engine & tender) (ft / m) | |||
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 24,251 / 11,000 | 19,842 / 9000 | |
Weight on Drivers (lbs / kg) | 24,251 / 11,000 | 19,842 / 9000 | |
Engine Weight (lbs / kg) | 52,911 / 24,000 | 49,055 / 22,251 | 47,399 / 21,500 |
Tender Loaded Weight (lbs / kg) | 28,219 / 12,800 | 30,990 / 14,057 | |
Total Engine and Tender Weight (lbs / kg) | 77,274 / 35,051 | 78,389 / 35,557 | |
Tender Water Capacity (gals / ML) | 1188 / 4.50 | 1436 / 5.44 | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.10 / 1 | 1.50 / 1 | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 | 33 / 16.50 | |
Geometry Relating to Tractive Effort | |||
Driver Diameter (in / mm) | 68.50 / 1739 | 83.90 / 2132 | 66.10 / 1680 |
Boiler Pressure (psi / kPa) | 97.20 / 670 | 101.50 / 700 | 97.20 / 670 |
High Pressure Cylinders (dia x stroke) (in / mm) | 14.17" x 23.03" / 360x585 | 14.96" x 22.05" / 380x560 | 14.96" x 22.05" / 380x560 |
Tractive Effort (lbs / kg) | 5577 / 2529.69 | 5075 / 2301.98 | 6168 / 2797.76 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.35 | 3.91 | |
Heating Ability | |||
Tubes (number - dia) (in / mm) | 414 - 1.22" / 31 | 125 - 1.929" / 49 | |
Flues (number - dia) (in / mm) | |||
Flue/Tube length (ft / m) | 13.12 / 4 | 6 / 1.83 | 12.47 / 3.80 |
Firebox Area (sq ft / m2) | 63.48 / 5.90 | 167.75 / 15.59 | 53.91 / 5.01 |
Grate Area (sq ft / m2) | 10.22 / 0.95 | 24.96 / 2.32 | 9.15 / 0.85 |
Evaporative Heating Surface (sq ft / m2) | 841 / 78.15 | 885 / 82.23 | 802 / 74.51 |
Superheating Surface (sq ft / m2) | |||
Combined Heating Surface (sq ft / m2) | 841 / 78.15 | 885 / 82.23 | 802 / 74.51 |
Evaporative Heating Surface/Cylinder Volume | 200.07 | 197.29 | 178.78 |
Computations Relating to Power Output (More Information) | |||
Robert LeMassena's Power Computation | 993 | 2533 | 889 |
Same as above plus superheater percentage | 993 | 2533 | 889 |
Same as above but substitute firebox area for grate area | 6170 | 17,027 | 5240 |
Power L1 | 3058 | 5454 | 2558 |
Power MT | 278.00 | 605.99 |