FRENCH STEAM LOCOMOTIVE VIRTUAL MUSEUM PICTURE GALLERY
Locomotives of the "Chemins de fer de l'Etat"
As usual, click on the photo for an enlarged image.
|231 D series, 4 cyl. compound. Modified according to Chapelon's theories and with its participation, they used Lentz-Dabeg valve gear on L.P. cylinders (i.e. where minimum steam throttling is imperative for a good efficiency).||231 DD series (S.N.C.F. 3-231G). They are very close replicas of P.O.'s Chapelon PACIFICS, as they used identical major dimensions (the boiler is quite different however) and are fitted with Lentz-Dabeg on both H.P. & L.P. cylinders. Chapelon designed steam circuit and cams.|
231 W series (S.N.C.F. 3 - 231 F). Use Willoteaux piston valves on the L.P. group.
1997 - 2001 by T. Stora. All rights reserved. Reproduction, translation, total or partial on any media absolutely forbidden without preliminary permission and agreement.