Etat 0-8-0 Locomotives in France


Class Details by Steve Llanso of Sweat House Media

Class 040-001 (Locobase 6068)

Data from "+tat 40-001 to 40-143" in Wikipedia at [link], last accessed 19 January 2023. See also I N Jevica's [link] (visited 29 May 2004) and [link] (visited November 2002) by Roland Arzul.

Tank switcher with a small coal bunker and sloping tanks. Wikipedia stated that these were designed to replace the class 30 0-6-0s. Only 20 left the builders before the First World War intervened and the last two were commandeered by the advancing Germans.

Six years later, the Est picked up the thread


Class 4001 (Locobase 7594)

Data from a site that reproduces cigarette card pictures and adds dimension and area data -- [link], last accessed 14 June 2006

A long-boilered freight engine with the tall dome positioned over the first driving axle, just behind the even taller stack. Roland Arzul's website of French locomotives -- [link], last accessed 22 June 2006 -- notes that this design was the inspiration for the P O's 1114-1140 class. They ran on the Clemont-Ferrand line in mixed-traffic duties.

Although given a class designation by the SNCF, the class never actually operated for the national line. Some were sold to the Algerian Railway, where they ran until 1940.

Principal Dimensions by Steve Llanso of Middle Run Media
Class040-0014001
Locobase ID6068 7594
RailroadEtatEtat
CountryFranceFrance
Whyte0-8-0T0-8-0
Number in Class14340
Road Numbers040-001 to 040-1434001-4040
GaugeStdStd
Number Built14340
Builderseveral
Year19141883
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.29 / 4.05
Engine Wheelbase (ft / m)13.29 / 4.05
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)13.29 / 4.05
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)138,450 / 62,800116,845 / 53,000
Engine Weight (lbs / kg)138,450 / 62,800116,845 / 53,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)138,450 / 62,800
Tender Water Capacity (gals / ML)1848 / 7
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)58 / 2949 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51.20 / 130050 / 1270
Boiler Pressure (psi / kPa)174 / 1200127.60 / 880
High Pressure Cylinders (dia x stroke) (in / mm)18.9" x 23.62" / 480x60021.26" x 25.98" / 540x660
Tractive Effort (lbs / kg)24,373 / 11055.4225,472 / 11553.92
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.68 4.59
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)19.37 / 1.8022.38 / 2.08
Evaporative Heating Surface (sq ft / m2)1095 / 101.802120 / 197.05
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1095 / 101.802120 / 197.05
Evaporative Heating Surface/Cylinder Volume142.77198.61
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation33702856
Same as above plus superheater percentage33702856
Same as above but substitute firebox area for grate area
Power L1
Power MT

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