Fabricated between 1907 and 1911, the locomotives
of this class were the first steam engines of the Italian State
Railways (FS) for passenger trains with superheated steam. They
had a very elegant design and could run at high speed. These steam
engines were assigned to the faster trains along the main lines
such Rome-Naples, Milan-Bologna e Milan-Turin. A total of 169 engines
have been fabricated in two series and have been equipped with the
typical 'Italian bogie' which assured a better stability in bends.
Five of these locomotive are officially classified as historical
locomotive by Trenitalia and are available to haul vintage trains
in Italy.
| Features: |
|
| Wheel arrangement |
1-3-0 (UIC: 1'C; Whyte notation:
2-6-0) |
| Power |
800 CV |
| Speed |
100 km/h |
| Length |
16.530 m including tender |
| Weight in service |
90 t |
| Tender supply |
15 of water and 6 t of coal |
| Available engines |
640.003, 008, 121, 143,
148 |
|
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|
Photo by Giovanni Tamborrino
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Steam engine Class FS 640 
