Army light railway 0-10-0 Locomotives in France


Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 15593)

Data from diagram UG Type 163, Societe Alsacienne de Construction Mecaniques from SACM locomotive book supplied by Dany Machi up at [link] as

Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007). See also "A New Form of Radial Axle Locomotive", Locomotive Magazine, Volume XXIX [29] (14 July 1923), pp. 191-193; and US Patent 1,544,917, assigned 7 July 1925.

Inside tube diameter was 40 mm (1.57"). The first and last coupled axles had considerable play to negotiate the very tight curves of a 600-mm track.

LM's 1923 article describes this setup in detail, identifying it as a variant of the Klien-Lindner system of axle and wheel flexibility; see Locobase 3616 for a more extensive description. Although the K-L system proved very successful in conveying great flexibility on otherwise rigid-frame locomotives, it could only be fitted to outside-frame engines.

SACM developed the Luttermoller flexible geared drive to permit the same system to work for both outside- and inside-frame locomotives. In the five-coupled locomotive described here, the three middle axles were hollow and indirectly connected to the wheels through ball joints. The outer front and rear axles were coupled to the other three through a three-gear setup housed in a dustproof and oilproof casing.

Locobase recommends reading the full description on p. 192 of the LM report and examining the patent application.

In addition to the German locomotives described in Locobase 4328, Luttermoller locomotives served several Indonesian sugar railways where their flexibility and considerable power were most welcome.

Principal Dimensions by Steve Llanso of Middle Run Media
Classunknown
Locobase ID15593
RailroadArmy light railway
CountryFrance
Whyte0-10-0T
Number in Class
Road Numbers
Gauge60 cm
Number Built
BuilderSACM
Year1925
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.82 / 2.99
Engine Wheelbase (ft / m) 9.82 / 2.99
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 9.82 / 2.99
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)33,069 / 15,000
Engine Weight (lbs / kg)33,069 / 15,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)290 / 1.10
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)11 / 5.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)23.60 / 600
Boiler Pressure (psi / kPa)198.70 / 1370
High Pressure Cylinders (dia x stroke) (in / mm)10.63" x 11.81" / 270x300
Tractive Effort (lbs / kg)9550 / 4331.81
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.46
Heating Ability
Tubes (number - dia) (in / mm)76 - 1.772" / 45
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 7.87 / 2.40
Firebox Area (sq ft / m2)30.79 / 2.86
Grate Area (sq ft / m2) 7.53 / 0.70
Evaporative Heating Surface (sq ft / m2)305 / 28.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)305 / 28.30
Evaporative Heating Surface/Cylinder Volume251.42
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1496
Same as above plus superheater percentage1496
Same as above but substitute firebox area for grate area6118
Power L12957
Power MT985.68

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