Staatsspoorwegen 2-12-2 Locomotives in Indonesia


Class Details by Steve Llanso of Sweat House Media

Class F10 (Locobase 3639)

Data from "Twelve-Coupled Tank Locomotive, Java State Railways", Locomotive Magazine, Volume 18 (15 August 1912), p. 163, and Metzeltin, "Fourteen-Wheeled (1 F 1) Superheated-Steam Tank Locomotive, Java State Railway", Zeitschrift des Vereines deutscher Ingenieure, translated for Bulletin of the International Railway Congress, July 1913, items 621.132.6 (.92) & 623.616 (.92), pp. 585, et seq. See also (Wiener (1930) ; Eagleson & Ziel (1973) for photographs; and

Doug Self, in [], accessed 2 February 2007.

Nicely proportioned, if massive, tank that switched or handled freight traffic over relatively short distances. Its stability came from placing the tanks 450 mm (17.7") lower than earlier designs

The running gear included a rigid wheelbase of only 3.75 m (12 ft 3 5/8 in). The first and sixth axles were given considerable side play within a Golsdorf axle arrangement while both the leading and trailing axles were Adams radial types.

Nine-inch (229 mm) piston valves supplied steam to the cylinders.

Doug Self, commented that the wheel arrangement acquired a name that specifically referred to this class: "Javanic". He notes that "Although they coped with the work , the tight curves caused severe flange wear on the leading drivers, and they were moved to other mountain lines with milder curves, where they were very successful."

See Indra Krishnamurti at [] for roster of 2-12-2Ts delivered in four batches by Hanomag (1912-1915 -- 6450, 6813-6821, 7362-7367) and Werkspoor (1915 -- 372-374).

Heating surface data differs in dspace.dial.pipex.com/javatour/ambarawa/locos/F1015.htm, a site for the Ambarawa Railway Museum maintained by Rob Dickinson. Dickinson, in describing 7366 of the last Hanomag batch, gives 122.2 sq m for heating surface, which converts to 1,315 sq ft. Superheat and grate areas are nearly identical with the above. Weight on the drivers is higher at 137,347 lb (62,300 kg) while overall engine weight is 173,502 lb (78,700 kg).

Krishnamurti, at [], says F10 01-23 had 120.2 sq m/1,293 sq ft of EHS, 36 sq m /387 sq ft) of SHS. F10 24-28 he lists has having 110.8 sq m/1,192 sq ft of EHS.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassF10
Locobase ID3639
RailroadStaatsspoorwegen
CountryIndonesia
Whyte2-12-2T
Number in Class24
Road Numbers801-822/F1001-F1022
Gauge3'6"
Number Built24
BuilderHanomag
Year1912
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)20.51 / 6.25
Engine Wheelbase (ft / m)42.91 / 13.08
Ratio of driving wheelbase to overall engine wheelbase 0.48
Overall Wheelbase (engine & tender) (ft / m)42.91 / 13.08
Axle Loading (Maximum Weight per Axle) (lbs / kg)20,944 / 9500
Weight on Drivers (lbs / kg)125,663 / 57,000
Engine Weight (lbs / kg)164,465 / 74,600
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)164,465 / 74,600
Tender Water Capacity (gals / ML)2244 / 8.50
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)35 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)43.40 / 1102
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)21.26" x 20.08" / 540x510
Tractive Effort (lbs / kg)30,929 / 14029.18
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.06
Heating Ability
Tubes (number - dia) (in / mm)109 - 1.969" / 50
Flues (number - dia) (in / mm)18 - 5.236" / 133
Flue/Tube length (ft / m)16.24 / 4.95
Firebox Area (sq ft / m2)103.98 / 9.66
Grate Area (sq ft / m2)27.99 / 2.60
Evaporative Heating Surface (sq ft / m2)1415 / 131.46
Superheating Surface (sq ft / m2)388 / 36.05
Combined Heating Surface (sq ft / m2)1803 / 167.51
Evaporative Heating Surface/Cylinder Volume171.51
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4870
Same as above plus superheater percentage5942
Same as above but substitute firebox area for grate area22,073
Power L18279
Power MT871.48

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