The sun. [volume] (New York [N.Y.]) 1833-1916, 1914-09-20
NEW CADILLAC CAR
Is AN EIGHT CYLINDER
First American Make With This
Type Motor to Be Mar
keted Here.

IN announcing that fts new oar II
powered with an eight cylinder engine
OF the v type. tho Cadillac Motor Car
Company becomes the hrst American
MANUFACTURER to develop an eight cylinder
car for the market
Thus are set at rest the runors which
for weeks have presumed TO forecast
Cadillac intentions and plans.
w. @. Aston. writing OF tho type
Of eight cylinder motor in the "Autocar
Imperial Year Book" London. clasrifles
It's advantages under four heads, viz.
size weight. torque and cooling.
Under the head OF size he comments
on the shortness OF the instruction.
which not only reduces periodic vibra-
tons in the crankshaft, but affords more
space for body work on r chassis OF
standard length. No extraordinary length
Of inlet piping Is required as the V
form cylinders lend themselves very
readily TO a piping arrangement that
. enables every cylinder 10 receive n prac-
tically uniform charge OF gas.
In tho matter of weight. the shortness
Of tho V type eight again figures, Mr..
| Aston pointing out the reduction In the
{ length Of crank case the lighter crank
/ lighter reciprOcating parts because OF tho
/ comparatively smaller size of the cylinder
| on a given power hSsis.
As 10 torque, he shows by illustration
/ that tho torduc of tho eight IL more
uniform and that additional cylinders
I could do no NOR. than increase tho power
Tho author points out that In the
| cooling system. zach block Of cylinders
I is treated as unit and the water cir
culation has no tendency to form pockets
around the valves.
The cylinder dimensions OF the new
Cadillac engine are comparatively small
J AZ inches bore and ~ inches strok'
yet In repeated tests by dynamomete
an excess OF 60 horsepower has beet
registered
The cylinders are cast IN two block
Of four cylinders each. with water jack
ets. combustion chambers and ntak
manifold integral. The cylinder block
are mounted on tho crank case at a
angle ~ 90 degrees to each other
whence the designation ~ type"
The cylinders are the l. head type
with all valves on the same side OF III
cylinder blocks,
There ia but ono crankshaft. the con
Meeting rods OF the cylinders opposit
each other being Jointly attached. on
camshatt with eight cams is employe
positioned directly above tho crankshaf
driven by silent chain from the crank
> shaft and operating the valves throug
b a series Of rocker arms provided wit
D
valves are nat head type, made Of TunH
st,n steel, and the inlet valves are tuli
, shape 70 facilitate the intake Of gas.
, The crankshaft is rs inches In diam
cter, Of special chrome nickel alloy stee
supported by reinforced bronze. babbi
lined bearings ~ liberal proportions
Its length is but &c i-l6 inches betwce
tho outer ends OF the forward and rcs
bearings thus overcoming the periodi
/ vibration or thrashing almost sure
result where n long crankshsft r. used.
! one of the factors which contribut
materially to tho smoothnoss and al
sence of vibration ~ this engine, asid
from its fundamental principle. Is IN
, lightness OF the reciprocating parts. Fo
example. pair Of piston connecting rod
weigh only forty-eight ounces, yet I
making the laboratory tests 1t required
conr7re ssion strain OF moro Than nine ton
20 bend one Of them.
a multiple disc clutch II employed an
the motor and Transmission are nounte
] as "A unit, the two rear points being holte
8 10 the frame and the forward point take
care Of by ball and socket joint
Details OF the car include left dri,
aud centre location OF the gear chang
and hand brake levers. wide DOORS ligh
ing md Ignition switches located cor
. vcnieutly on the cowl board and n pedi
. button in the floor for bringing the ele,
trio device into action.
Il