Paris-Saint-Germain 2-2-2 Locomotives in France


Class Details by Steve Llanso of Sweat House Media

Class Eole (Locobase 20007)

Data from E Flachat and J Petiet, Guide du Mechanicien-Conducteur de Machine Locomotives ...(Paris: Mathias, Libraire, 1840), passim, basic data in Tables B & C, pp. 218-219. See also Roland Arzul 's Le Paris Saint Germain (put up 8 February 2013) at [link], last accessed 13 September 2015.

These were Patentees of a slightly later vintage than Le Dragon and her sisters (Locobase 16090). The other three locomotives were named Etna, MTdTe, and Vautour.


Class Le Dragon (Locobase 16090)

Data from Arthur E Kyffin, "Some Vulcan Foundry Engines", The Railway Engineer, Volume 17, No 9 (September 1896), p. 259. See also Roland Arzul, "Le Paris Saint Germain", Mise a jour 8 fevrier 2013 at [link], last accessed 26 July 2015, and an extended analysis of coke burning trials that included the Tayleur (in French) at E Flachat and J Petiet, Guide du Mechanicien-Conducteur de Machine Locomotives ...(Paris: Mathias, Libraire, 1840), passim, basic data in Tables B & C, pp. 218-219. Works numbers were 23-24 in 1835, 26-28 in March 1836, 34 in February.

The engines--among the first Patentees to be delivered by British builders to a French design--were named Le Dragon, L'Oise, Saint-Germain, La Salamandre, Tayleur, and Watt.


Class Type 1 (Locobase 20380)

Data from E Flachat and J Petiet, Guide du Mechanicien-Conducteur de Machine Locomotives ...(Paris: Mathias, Libraire, 1840), passim, basic data in Tables B & C, pp. 218-219. See also Schneider & Cie, Locomotives (Paris : Imp. Draeger, 1920), p. 4, last accessed 29 May 2018 at [link]. Works number were 1-6 in 1838.

They were the very first locomotives delivered from Schneider's works in Le Creusot. Compared to earlier St. Germain railway singles, this sextet had more heating surface area and boiler pressures were beginning to inch up as builders gained more confidence. 5 1/2-foot drivers indicated the design's passenger duties. A long clean-lined boiler showed only a small device ahead of a very tall stack and a tall safety-valve stand over the round-topped firebox.. But such extravagances as a weatherboard were still to come, let alone a roof.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassEoleLe DragonType 1
Locobase ID20007 16090 20380
RailroadParis-Saint-GermainParis-Saint-GermainParis-Saint-Germain
CountryFranceFranceFrance
Whyte2-2-22-2-22-2-2
Number in Class466
Road Numbers
GaugeStdStdStd
Number Built466
BuilderHaigh FoundryTayleurSchneider-Creusot
Year184018361838
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)11.75 / 3.58
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)13,889 / 630011,905 / 5400
Engine Weight (lbs / kg)30,865 / 14,00026,455 / 12,00034,172 / 15,500
Tender Loaded Weight (lbs / kg)13,228 / 600011,023 / 5000
Total Engine and Tender Weight (lbs / kg)44,093 / 20,00045,195 / 20,500
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.5020 / 10
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)65.70 / 167066 / 167665.70 / 1670
Boiler Pressure (psi / kPa)75.40 / 52075 / 52084.10 / 580
High Pressure Cylinders (dia x stroke) (in / mm)11.61" x 15.98" / 295x40611.63" x 16" / 295x40612.99" x 18.27" / 330x464
Tractive Effort (lbs / kg)2101 / 953.002090 / 948.013354 / 1521.35
Factor of Adhesion (Weight on Drivers/Tractive Effort) 6.61 5.70
Heating Ability
Tubes (number - dia) (in / mm)121 - 1.614" / 41107 - 1.625" / 41120 - 1.732" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.04 / 2.458 / 2.48 8.53 / 2.60
Firebox Area (sq ft / m2)44.46 / 4.1346.38 / 4.3152.10 / 4.84
Grate Area (sq ft / m2) 7.97 / 0.74 6.67 / 0.62 8.93 / 0.83
Evaporative Heating Surface (sq ft / m2)456 / 42.37408 / 37.90522 / 48.52
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)456 / 42.37408 / 37.90522 / 48.52
Evaporative Heating Surface/Cylinder Volume232.89207.40186.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation601500751
Same as above plus superheater percentage601500751
Same as above but substitute firebox area for grate area335234794382
Power L1286026842571
Power MT453.97497.03

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