FRENCH COMPOUND LOCOMOTIVES' HOMEPAGE
Chapelon's "enhanced" 3500 & 4500 P.O. Pacifics; 3800 & 4800 series (later S.N.C.F. 4 - 231 G & A). History - Technical data
Briefly, these units are big (3500 series) or
small (4500s) wheels Pacifics of the P.O. improved at the lowest
possible cost. Various transformations have been applied on small
batches of locomotives, such as an enlarged piping for H.P.
cylinders feeding on some units, Willoteaux's piston valves on
the L.P. or ordinary piston valve with increased stroke, new
larger regulators, A.C.F.I. feed water heaters on some units, ..
resulting in about 4 or 5 different variant.
|Depot of Limoges, 1936; Photo Felix Fénino.||3824 in the depot of Bordeaux St. Jean, 1953. Photo Raymond Floquet.||4578 again in Bordeaux. Photo L.M. Vilain|
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