Freight service locomotive. The needs of power before needing to use
multiple units in several locomotives simultaneously for a convoy of
which the quest for power to be replaced by this model. This model
preceded the 4-12-2 to be even more powerful.
These are
three-cylinder locomotives, then rebuilt in two-cylinder engines to
simplify maintenance, in fact, the effort on the rods was otherwise too
high.
Class TTF-1 (TTF: four ten two: 4-10-2)
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