1930 Cadillac Brochure Front Cover - GM Heritage Center

Completely harmonized steering system
One of the first things that will be observed in driving the new
Cadillac is the exceptional ease with which the car may be controlled
at all speeds on any kind of road. The steering gear, itself, is
of the worm and sector type, providing a reduction of II to 1. The
worm is supported in the housing by large bronze bushings to take
all radial loads, and adjustable ball bearings are provided for thrust
loads. The sector is machined from a forging of nitraloy steel, anew
metal having great hardness and resistance to abrasion.
The steering system has been completely harmonized by a steering
modulator, a new and important feature, at the forward end of
the left front spring, consisting of a flexible shackle held by four
coil springs to completely cancel the effects of front wheel shimmy
and tramp at all speeds and on any type of road surface. This enables
the car to be operated at high speeds under all conditions
without fatigue and effort
in driving.
The steering wheel is
of a new safety design,
completely eliminating
the hazard of personal injury
resulting from the
breaking of the wheel in a
bad crash. It is an aluminum
die-casting rein-
Oil pans, splash pans, and other sheet metal
parts are stamped by giant presses
to their correct form
forced with steel the rim
'
of which will not part
from the spokes regardless
of the impact;
and it is impossible for
a spoke to break and
injure the driver. The
wheel is 19 inches in
diameter finished in
pyralin, giving a durable
and attractive
luster to this unit. The
throttle and headlight
controls are placed in
the center of the wheel
as formerly, but are of
a new and distinctive
design so shaped that
they will not tear the
driver's clothing in a
quick maneuver.
FRAME
The Cadillac frame, with a 9-inch depth,
provides tremendous strength and rigidity
with consequent freedom from annoying
body noises likely to result with frames of
insullicicnt depth.
The foundation
supporting all of these units and upon which the body is mounted is
the frame. In buildings where accurate machinery is to be installed,
the required rigidity of the floors imposes a more exacting condition
upon the design of beams and girders than is imposed by the
requirement of safety alone. Cadillac engineers have not been content
to allow only an ample factor of safely in the design of the
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