Est 4-6-4 Locomotives in France

Class 3822 (Locobase 9175)

Data taken from table published in Railroad Age Gazette (26 June 1908), which was compiled through direct communications with Est chief Saloman, chief designer Flaman and his assistant M.Birckel, chief draftsman.

The author, Charles Lake, describes these de Glehn compounds as perfectly suited to the demanding suburban service in which they operated. He noted that the run to Thierry (59 miles), which included 18 intermediate stops, could be made in 30 minutes less time than the old tanks. Like the 3400 Ten-wheelers from which they were derived, they were equipped with Belpaire fireboxes.

Class 3901 (Locobase 4197)

Data taken from "Compound Tank Engines in France", Railway Engineer (June 1908), pp.185-186. See also a table published in Railroad Age Gazette (26 June 1908), which was compiled through direct communications with Est chief Saloman, chief designer Flaman and his assistant M.Birckel, chief draftsman. See also Dr. R. Sanzin, "Die Lokomotiven auf der Intertionalen Austellung in Mailand 1906, 22. 3/7 gekuppelte vierzylinder Verbund-Personenzuglokomotive der franzosischen Nordbahn ...", Zeitschrift des Oesterreichischen Ingenieur- und Architeckten-Vereines, Vol LVIII Nr. 51 (21 December 1906), pp. 718-719.

The author, Charles Lake, describes these de Glehn compounds as perfectly suited to the demanding suburban service in which they operated. He noted that the run to Chateau Thierry (59 miles), which included 18 intermediate stops, could be made in 30 minutes less time than the old tanks.

Like the 3400 Ten-wheelers from which they were derived, they were equipped with Belpaire fireboxes. High-pressure cylinders were located outside and drove the second axle. Low-pressure cylinders inside and under the smokebox drove the lead axle.