Czech State Rwy 2-8-0 Locomotives in Czechoslovakia

Class 434.2 (Locobase 1656)

Data from "CSD series 434.2t" in Wikipedia at [], last accessed 5 October 2022; "Lokomotivy rady 434.2 prezdívané Ctyrkolák" at the [], last accessed 5 October 2022; and A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot, Devonshire: David & Charles, 1966), pp. 28, 40

As part of its original motive power taken from the disintegrated Austro-Hungarian railways in 1918-1919, the new Czechoslovakian State Railways took over hundreds of class 170 compound 2-8-0s and added 71 more. But the sought-after economies promised by compound expansion proved elusive and the CSD's workships as Louny, Nymburk, and Polzen as well as Skoda converted them to two-cylinder simples.

Many more modifications accompanied the cylinder conversion. 250 mm (9.84") diameter piston valves replaces slide valves, an extended smokebox that housed a superheater of 110 tubes and 19 52 mm tubes. Beginning in 1939, it was replaced by a classic Schmidt-design firetube superheater where the elements lay in large flues. the Although a 39 sq m loss of superheating surface area from 77.3 sq m to 38.3 sq m seemed substantial, it was more than counteracted by the fact that a smokebox superheater couldn't raise steam temperature to the degree (yes, Locobase wrote that) made possible using the Schmidt.

As a result, contends the Czech-language Lokomotivní depo Trutnov website (Google translation) , "CSD thus acquired universally usable freight locomotives, which later also temporary on a secondary line." Rated horsepower increased from 1,100 hp to 1350-1400 hp in locomotives that could haul 1,400 ton trains on level track at 58 kph (36 mph) and 600 tons up a 1/2% grade at 51 kph (32 mph) and 1% at 30 kph (19 mph).

LdT concluded: "The new machines can be called one of the most successful reconstructions in Europe at all. The large steam space of the boiler and the large boiler output - these were the qualities for which this series is still considered by the locomotive staff to be one of the most proven in our country."

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Class 455.1 (Locobase 1658)

Data from Google translation of Wikipedia article [], last accessed 20 October 2011.

This set of Consolidations was built soon after World War One for service on the Kassa-Oderberg railway within the new Czechoslovakian republic. After the Nazi takeover in 1938, they were integrated into the Slovak Railways. In the post-war area the class operated out of Zilina until the lines were electrified in 1964.

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Class 570/436.0 (Locobase 1657)

Data from "CSD-Baureihe 436.0" on Wikipedia at [], last accessed 18 October 2020. Works numbers were 2650-2659 in 1918. CSD's Ceská Trebová shops built an 11th engine using a new boiler and spare parts from the others in 1932.

Built for the British Ministry of Munitions Production, this set of Consolidations were not duplicates of the standard Military Mary design described in Locobase 2742. After the collapse of the Austro-Hungarian Empire, they were sent to the Czechoslovakia State Railways (successor to the kkStB) in 1919.

The CSD put the locomotives to work on the Slovak route Bratislava - Áilina. There they remained until their retirements in the mid-1960s.