Nederlandsch-Indische Spoorweg Mij 0-4-2 Locomotives in Indonesia


Class Details by Steve Llanso of Sweat House Media

Class B22 (Locobase 4716)

Data from dspace.dial.pipex.com/javatour/ambarawa/locos/B2209.htm, a site for the Ambarawa Railway Museum maintained by Rob Dickinson. Additional data from the table presented on pages 426, 428 of the Groupe VI. - GTnie civil. - Moyens de transport. DeuxiFme partie. Classes 32 (Tome I), part of the series of Rapports du Jury Internationale of the Exposition Unverselle Internationale de 1900 Paris Exposition, hosted on the website of Le Conservatoire numTrique des Arts & MTtiers ([link], Accessed 21 August 2005). See also "Compound Tank Locomotive, Indian-Netherlands Railway", Engineer, Volume 93 (3 January 1902), pp. 14, 22; and 14 February 1902, p 159 for sectional diagrams. Works number is given as 2561.

Suburban tram engine design that a Ziel and Eagleson (1973) photograph shows to have been a high-boilered, low-drivered tank engine with shielded running gear. Locobase notes the rather demanding requirements: Must sustain 25 km/h (15.5 mph) pulling 140 tonnes over an line that had 0.5% ruling grade and curves with a minimum radius of 200 meters (684 ft).

See Indra Krishnamurti at [link] for building dates and numbers both of predecessor railways and the Indonesian State Railways.


Class B25 (Locobase 4717)

The last two of the class, delivered in 1906, had larger cylinders (15.35" diameter).

See Indra Krishnamurti at [link] for building dates and numbers both of predecessor railways and the Indonesian State Railways.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassB22B25
Locobase ID4716 4717
RailroadNederlandsch-Indische Spoorweg MijNederlandsch-Indische Spoorweg Mij
CountryIndonesiaIndonesia
Whyte0-4-2T0-4-2RT
Number in Class205
Road Numbers306-325/B2201-B2220231-235/B2501-B2505
Gauge3'6"3'6"
Number Built205
BuilderHartmannEsslingen
Year18981902
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.58 / 1.70
Engine Wheelbase (ft / m)11.81 / 3.60
Ratio of driving wheelbase to overall engine wheelbase 0.47
Overall Wheelbase (engine & tender) (ft / m)11.81 / 3.60
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)37,390 / 16,96046,297 / 21,000
Engine Weight (lbs / kg)55,689 / 25,26068,343 / 31,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)726 / 2.75
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.80 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41.30 / 105033.60 / 853
Boiler Pressure (psi / kPa)182.70 / 1220180.60 / 1250
High Pressure Cylinders (dia x stroke) (in / mm)11.02" x 15.75" / 280x400 (1)13.39" x 17.72" / 340x450
Low Pressure Cylinders (dia x stroke) (in / mm)16.34" x 15.75" / 415x400 (1)
Tractive Effort (lbs / kg)4944 / 2242.5614,515 / 6583.90
Factor of Adhesion (Weight on Drivers/Tractive Effort) 7.56 3.19
Heating Ability
Tubes (number - dia) (in / mm)120 - 1.614" / 41
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 8.37 / 2.55
Firebox Area (sq ft / m2)50.57 / 4.70
Grate Area (sq ft / m2) 9.68 / 0.9015.49 / 1.44
Evaporative Heating Surface (sq ft / m2)423 / 39.30680 / 63.20
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)423 / 39.30680 / 63.20
Evaporative Heating Surface/Cylinder Volume486.58235.45
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation17692797
Same as above plus superheater percentage17692797
Same as above but substitute firebox area for grate area9239
Power L14447
Power MT524.42

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