The Pensacola journal. (Pensacola, Fla.) 1898-1985, 1922-09-24

10, which is being made this week in all
parts of the country, discloses the new
motor about which SO many Fumors
have been current in automobile circles
for some time.
From performance standpoint, pow
er is the feature which shows the most
noteworthy development in the Frank
lin with the new motor. In hill climb
ing, this greater power represents a 20
per cent increase in ability, and in
speed, a 10 per cent increase, tests
made by the Franklin Company show,
without, however, involving any change
in the size of the motor. but register
ing in fact, a worthwhile reduction in
fuel consumption.
Under Way Since 1915.
From a design standpoint, Series 10
Franklin introduces some entirely new
ideas in air-cooling which are the en-
bodiment Of work started by Franklin
engineers as far back as 1915. The
cooling apparatus functioRing on the
new motor, and called the pressure
system, is known to have undergone
tests on over score of cars, and ag-
gregating 100000 miles, before its adop-
ton. It develops a current of cooling
air which is fully two and one half
times that of the former Franklin sys-
tenn.
The new cooling system takes the air
in at the front Of the motor and forces
it over the cylinders. This is the direct
opposite from the method formerly en-
plcyed in which the air was drawn in
by q fan set IN the hywheel at the rear
of the motor. A blower or fan of the
Sirocco type is mounted at the forward
end Of the crankshaft and encased in an
aluminium housing. The air forced in
by the blower passes through q con-
tinuation of this aluminium housing, is
carried over the upper ends of the CYL
tnder Jackets and down across the cool
ing fms which are set in the walls OF
the cylinders.
Cooling Fins Changed.
4 change has been made in the cool
ing fms, the ends being bent at approx
innate right angles so that they form
what practically amounts to a closed
jacket about the cylinders through
which the air is conducted. This does
away with the use of the separate out
err jacket as used In former models, at
fords greater cooling area and permits
reduction in the length Of the fins
themselves.
With the new pressure system Of cool
ing, the air forced in by the blower is
absolutely controlled by battle plates,
placed in the aluminium passageway al
ready referred to, and this makes it
possible to direct the necessary amount
of ain to those points where the great
est amount Of heat is developed.
Fuel Transformer Uses Low
Grade Gas.
To make possible the most efficient
use Of the steadily lowering quality of
h.
lie, the new Franklin motor is equipped
with what Franklin engineers term
fuel transformer. This device is in the
shape Of a cylindrical aluminium casting
with corrugated walls surrounded by a
heating jacket through which the ex-
haust gas of the engine is passed. Raw
gasoline on its way to the inlet mani
fold is led through the interior Of this
transformer and subjected to heat
which turns 1t into vaPor. The device
is so designed that it is impossible for
anything except vapor to pass through
ID to the inlet manifold. Heavy ends
in the gas which were not broken up
or Vaporized in their first passage thru
the transformer are trapped and re-
turned again to the bottom of the
transformer, to be subjected once more
to passage over the heated corrugated
walls. This operation is repeated as
many times as IS necessary TO produce
the vapor. The device affords the
Franklin a high degree of efficiency in
the use of the lowest grades of gasoline.
in addition to preventing raw gasoline
from being drawn into the cylinders
and passing from there into the crank
case to cause dilution of the ubricating
Oil.
HuratamIn For Connecting Rods.
Certain factors contributing to smooth
ness and quietRess Of operation have
been perfected, among which the use Of
duralannin for connecting rods is an
innovation, This new material by
cutting off 80 per cent of the weight Of
corresponding steel parts. makes posi-
BILE a considerable tightening of Pecip-
rocating parts. succeeding thereby in
reducing vibration, In the same con-
nection, 1t is worthy Of note that
Franklin engineers were also first to in-
tFeduee the use of the aluminium pis-
ton.
Double FlywhssI Effect. .
The double flywheel effect contrib
uting further to the countePactiRg OF ]
results from the mounting Of
the Sirocce Fan at the front end and
the, flywheel at the rear end of the {
orankshaft. The crankshaft itself,
eaSe-hardened by q process perfected ]