Elsass-Lothringen 4-6-4 Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class D33/ T17 / TB 301 (Locobase 7909)

Data from Christian Lindecke's German locomotive website -- [], accessed 25 October 2006 -- and []. See also SACM diagram Loco 136 from Societe Alsacienne de Constructions Mecaniques from locomotive book supplied by Dany Machi up at [] as

Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007); and Dr. R. Sanzin, "Die Lokomotiven auf der Intertionalen Austellung in Mailand 1906, 22. 3/7 gekuppelte vierzylndrige Verbund-Personenlokomotive der Elsass-Lothringischen Reichsbahnen ...", Zeitschrift des Oesterreichischen Ingenieur- und Architeckten-Vereines, Vol LVIII Nr. 51 (21 December 1906), pp. 721. (Thanks to Alexander Blessing for his 7 May 2023 email reporting the correct valve gear.) Works numbers 5525-5534 in 1905; 5720-5729, 5784-5785 in 1907; 5908-5915, 5956-5965 in 1908; 6219-6235 in 1911; 6701-6703 in 1914

Like the Prussian T16 (Locobase 7908), this compound tank design addressed a railway requirement to pull 200 tons up a 1% grade, albeit at the lower speed of 60 kph (37 mph). They had Belpaire fireboxes and the de Glehn compounding layout.

Unlike the much larger T16, the T17s were built in quantity. All but four were produced by Grafenstaden; 8341-8345 came from Humboldt. After World War I and the restoration of Alsace Lorraine to France, the class was French. In service the design proved relatively small and underpowered, but provided useful service in suburban traffic. Surprisingly, it never seems to have been superheated.

Only a few were assigned the TB code by the SNCF on its founding in 1938, and the last of these served until 1952.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassD33/ T17 / TB 301
Locobase ID7909
RailroadElsass-Lothringen
CountryGermany
Whyte4-6-4T
Number in Class66
Road Numbers1013-21, 2511-40, 2546-2565/8201-8366 /TB 301-366
GaugeStd
Number Built66
BuilderGrafenstaden
Year1905
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.48 / 3.50
Engine Wheelbase (ft / m)34.12 / 10.40
Ratio of driving wheelbase to overall engine wheelbase 0.34
Overall Wheelbase (engine & tender) (ft / m)34.12 / 10.40
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)92,594 / 42,000
Engine Weight (lbs / kg)189,156 / 85,800
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)189,156 / 85,800
Tender Water Capacity (gals / ML)2561 / 9.70
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 5.50 / 5
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)65 / 1651
Boiler Pressure (psi / kPa)203.10 / 14
High Pressure Cylinders (dia x stroke) (in / mm)13.39" x 25.2" / 340x640
Low Pressure Cylinders (dia x stroke) (in / mm)20.87" x 25.2" / 530x640
Tractive Effort (lbs / kg)17,001 / 7711.53
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.45
Heating Ability
Tubes (number - dia) (in / mm)190 - 1.772" / 45
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.78 / 4.20
Firebox Area (sq ft / m2)114.10 / 10.60
Grate Area (sq ft / m2)21.10 / 1.96
Evaporative Heating Surface (sq ft / m2)1328 / 123.40
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1328 / 123.40
Evaporative Heating Surface/Cylinder Volume323.34
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4285
Same as above plus superheater percentage4285
Same as above but substitute firebox area for grate area23,174
Power L14187
Power MT299.07

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