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The 21/55 PS was a car produced by the luxury carmaker German Opel from 1919 to 1924.

Profile and History

The 21/55 PS was launched as a successor to the 25/55 PS, off-list since 1916 : the First World War saw the house Rüsselsheim groped to go ahead with the production of cars, but not always got the chance, so some models had to wait until the end of the conflict before resuming the witness of a model out of production.

The 21/55 PS was a car available in two body variants: the classic limousine, typical configuration of luxury cars, and a large torpedo at 6 or 7 seats. Also the dimensions were considerable in both cases: the 21/55 PS reached a maximum length of well 5.3 m .

The 21/55 PS was the first Opel history equipped by a motor to 6 cylinders, in this case in line, with which it left the old solution of 4 cylinders arranged in half-blocks aligned by two cylinders each.

The 6-cylinder in-line 21/55 PS had a displacement of 5646 cc, which is significantly less than the previous 6.5-liter mounted on the 25/55 PS. On the other hand, however, the power remained almost unchanged and the maximum was 60 hp at 1500 rev / min. As before, the distribution was side-valve.

The transmission was in drive shaft with two joints, clutch cone and change 4 speed.

The chassis was longitudinal and transverse members in steel, with suspension rigid axle and semi-elliptic leaf springs. The brake band and was acting on the gearbox.

The maximum speed was 85 km / h.

The 21/55 PS was removed from production at the end of 1924: his direct heir was the Regent, which would be launched, though, just over three years later, at the beginning of 1928 .