Nord 701, built 1885 by SACM. This is the world's first compound steam
locomotive, designed by Alfred de Glehn, inspired by compound ship engines.
The 701 pioneered the arrangement of two inner high-pressure cylinders and
two outer low-pressure cylinders. Weight 41.45 t, length 15.63 m, diameter
of driving wheels 2.114 m. Originally this was an 1110 (1'Bo) and the two
driving axles were not coupled, each individually driven by a pair of
cylinders. This however lead to wheelslip problems and the two driving axles
were coupled by side rods, then in 1892 the locomotive received a front bogie,
transforming it to 220 (2'B). It is painted in the green colour used by the
Nord for fast locomotives before 1900.
<p>
Mulhouse, Cit&eacute; du Train, 2006-06-02
<p>
<a href="mailto:tbk@uncia.de">tobias b k&ouml;hler</a>