Английская Википедия:FS Class 552

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Шаблон:Infobox locomotive The Ferrovie dello Stato Italiane (FS; Italian State Railways) Class 552 (Italian: Gruppo 552), formerly Rete Adriatica Class 180 bis, is a 4-4-0 steam locomotive; it was the final development in Italy of the 'American' express locomotive type.

Design and construction

Last in a line of successful 4-4-0 locomotives designed in Florence, the Class 552 was basically an evolution of the earlier Class 545 and Class 550 locomotives, with a larger boiler and bigger cylinders. The class was initially fitted with a prototype tender similar to the definitive one, but with only Шаблон:Convert of water.

The first series of 24 units was built in 1890 by Ernesto Breda and Ansaldo (12 units each); 12 more were built by Breda from 1900 to 1901.Шаблон:SfnШаблон:Sfn

Service

Файл:Locomotiva a vapore FS Gr 552 - 036 - Museo nazionale scienza e tecnologia Milano.jpg
The FS Gr 552 - 036 exposed at the Museo nazionale scienza e tecnologia, Milan

The Class 552 (until 1905, when the FS were formed, classified RA 180 bis and numbered 1865–1900) were primarily assigned to the most prestigious fast passenger trains of their time, notably the India Mail or Peninsular Express (called in Italian Valigia delle Indie), which was part of the P&O relation between London and Bombay; in Italy, this train ran the itinerary Modane-Turin-Alessandria-Bologna-Ancona-Brindisi, where a ship took the passengers to Alexandria.Шаблон:Sfn

However, they were the swan song of the two-wheeled express locomotives in Italy, as their relatively modest performance, Шаблон:Convert at Шаблон:Convert, quickly became insufficient; with the introduction of more powerful locomotives with three driving wheels (such as the Class 630 or the Class 670), the Class 552 was soon relegated to secondary roles. However, unlike its predecessors (all disappeared by the 1930s), some locomotives of the class managed to survive until 1946, working around Treviso.Шаблон:SfnШаблон:Sfn

Preservation

One Class 552, the 552.036, survived into preservation; she is currently a static exhibit in the Museo della Scienza e della Tecnologia "Leonardo da Vinci" in Milan.

References

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