Evening star., 1936-03-15

refill with fresh water. Two drain
ings and rinsing in between will
thoroughly remove all the accumula-
ton of rust and grease.
Sometimes good cleaning will dis
close leak in the radiator shell, due
to ruSting of the metal. If this hap
pens, don't blame the radiator cleaner
The chances are that the scum has
been heavy enough to plug the leak
but the removal of the scum brings
the leak to attention, permitting re-
pairs before further damage is done
Sometimes a leak will develop at a
hose connection. In such cases the
leak can usually be repaired by simply
Tightening the hose bands. If exami-
nation shows, however, that the hose
has become badly worn and rotted,
new section of hose should be in
stalled.
There are radiator cleaners avail
able which not only clean out the
rust and scum, but can also be used
for preventing the formation Of new
rust. In using one of these cleaners,
keep about half cup of the solution
until the cleaning job is finished. then
pour it into the radiator when filling
with fresh water. This will keep the
cooling system free from rust, wheth-
er it is filled with plain water or an
anti-freeze solution.
X X y
Motor car designers will have a
wide assortment of innovations, some
practicable and many wholly theoreti-
cal, to select from when they begin
blue printing next years automobile
according to Associated Press reports
While the principal objective at the
moment appears to be to increase
gasoline mileage and riding comfort
the devices upon which automotive
engineers have been working during
the last few months include a num-
Der quite apart from fuel economy.
In the latter classifications are such
important developments as windshields
that one designer claims eliminate al
glare, and a new automatic trans
mission with much greater range
of speed reductions. The manufac-
turer of the new gear-boX is not yet
ready to announce its details, but
claims it will show many advantages
over the present conventional type.
Seeking increased power potential
ity without adding weight, one en-
gineer has evolved a reinforced alumni
mum piston which he claims incor-
porates thermoStatic expansion con-
troll. Some experimental work remains
to be done with the new piston. In
seeking favor with the motor car
makers it will have to compete with
a cast steel piston already in success
full operation and providing marked
oil economy at 1-10ooth of an inch
clearance
A new type of combustion chamber
also is nearing the end of expert
mental use. Its designers objective,
of course, was higher compression
without additional impregnation OF
available grades of fuel. The drawing
of the new chamber shows part of it
directly above the piston top connected
by a narrow channel with similar
space Immediately adjacent.
Supplementing these various innova-
tions is continuing experimentation
with an injection feed system, de-
signed to more accurately control the
mixture distribution in present null
tiple cylinder engines. Although not
Immediately apparent to the average
car owner, the engineers have found
the life of the nultiple-cylinder, high
compression engine has been ma
terially affected by a variation in the
richness of the mixture entering the
different cylinders.