CLUB OF CAR FANS
WHEN THE AUTOMATIC MACHINES WERE YOUNG …
… the Bendix system helped shift gears.
Sergey KANUNNIKOV. Photo by Vladimir Trusov
In the 30s, planetary automatic gearboxes (see the review in this issue) were just being developed, and drivers were content with units with automated switching, in the terminology of the time. One of these was placed on the American “Hudson Ait” (in our country cars of this brand were usually called the “Hudson” or “Hudson”).
The Ait model was the pinnacle of the now almost forgotten firm. A car of solid size was equipped with an inline “eight” with a working volume of 4165 cm3 and a capacity of 122 liters. with. They released the “Eyts” of several series with a variety of bodies and finishes. On the part of the eight-cylinder Hudson, a three-stage gearbox with an electrovacuum shift design by Bendix was commissioned.
The mechanical part of the unit practically did not differ from the usual. However, to control the box, the driver had not the usual lever, but a small switch. The current from the battery was supplied to the solenoids controlling the valves connected to the intake manifold and two vacuum cylinders. The first was responsible for the choice of gear - its rod moved the box lever laterally. The second cylinder, depending on the vacuum created in its upper or lower cavity, moved the lever longitudinally - forward or backward, including one of the gears.