Semarang-Cheribon Stoomtram Mij 0-4-0 Locomotives in Indonesia


Class Details by Steve Llanso of Sweat House Media

Class B20 (Locobase 4714)

Data from Dr Jonathan Smith, [] . Also see Krishnamurti's site below.

See Indra Krishnamurti at [] for building dates and numbers both of predecessor railways and the Indonesian State Railways. Beyer, Peacock & Co supplied 14, Werkspoor 5.

One of several classes of light tram motive-power units. These consisted of a steam locomotive enclosed in a body that had low side tanks to shield pedestrians from the running gear. Photographs in Ziel and Eagleson (1973) suggest that the passenger trams had an engine coupled to each end.


Class B52 (Locobase 4720)

One of several classes of light tram motive-power units. These consisted of a steam locomotive enclosed in a body that had low side tanks to shield pedestrians from the running gear. Photographs in Ziel and Eagleson (1973) suggest that the passenger trams had an engine coupled to each end.

Data from [] Superheat on such a small locomotive is surprising.

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

Principal Dimensions by Steve Llanso of Sweat House Media

ClassB20B52
Locobase ID4714 4720
RailroadSemarang-Cheribon Stoomtram MijSemarang-Cheribon Stoomtram Mij
CountryIndonesiaIndonesia
Whyte0-4-0T0-4-0
Number in Class1327
Road Numbers29-41/B2001-B2013101-127/B5201-B5227
Gauge3'6"3'6"
Number Built1327
BuilderseveralHartmann
Year19001911
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)38,581 / 17,50037,038 / 16,800
Engine Weight (lbs / kg)38,581 / 17,50037,038 / 16,800
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)32 / 1631 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)40 / 101641.30 / 1050
Boiler Pressure (psi / kPa)180.60 / 12.50171.10 / 11.80
High Pressure Cylinders (dia x stroke) (in / mm)9.02" x 15.75" / 229x40011.81" x 18.11" / 300x460
Tractive Effort (lbs / kg)4918 / 2230.778895 / 4034.71
Factor of Adhesion (Weight on Drivers/Tractive Effort) 7.84 4.16
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) 7.53 / 0.70 8.61 / 0.80
Evaporative Heating Surface (sq ft / m2)288 / 26.80374 / 34.80
Superheating Surface (sq ft / m2)108 / 10
Combined Heating Surface (sq ft / m2)288 / 26.80482 / 44.80
Evaporative Heating Surface/Cylinder Volume247.24162.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation13601473
Same as above plus superheater percentage13601797
Same as above but substitute firebox area for grate area
Power L1
Power MT

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