0-4-2 Steam Locomotives in Indonesia

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 ([], 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 [] 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 [] for building dates and numbers both of predecessor railways and the Indonesian State Railways. Works numbers were 3242-3244 in 1902 and 33423-3343 in 1905.

A quintet of rack locomotives, the class served the Secang-Kedungjati railway line as far as Ambarawa Station. The steep cog section was 6.5 km (4 miles) long, over which the engines could climb at 10 kph (6 mph).; maximum road speed on flat track reached 30 kph [18.6 mph]. The boiler supplied steam to outside cylinders driving the adhesion drivers as well as two cylinders powering the toothed gear that engaged the rack. A side view of a B25 shows the two sets of valve gear and cylinders on each side stacked one over the other.

Google translate gives the English version of some unusual details:

"The teak wood fuel used in this locomotive can boil up to 2,850 liters of water[per hour? in US gallons 753]." Three hours after beginning to raise steam, its temperature had reached 235 °C [455 F].

According to Wikipedia, the first engines--B2501-B2503 remain in tourist in the 2020s. B2505 donated parts. Wikipedia offers this biting comment regarded B2504's fate:"B25 04 was stored at the Kedungjati depot, looters took everything at the depot including B25 04."