Evening times-Republican. [volume] (Marshalltown, Iowa) 1890-1923, 1920-10-20

1.-What is tho freezing point OF
gasolene and denatured alcohol?
1t is possible for easolene TO
freeze when cooled to 202 degrees be-
low zero. Denatured alcohol Will
freeys~at 200 degrees below zero.
2.-What is the difference between
IA blue or red ignition spark?
The color of the spark depends upon
the intensity of high tension cur
rent passing to the spark plugs. rms,
in turn, is caused by the winding OF,
the Ignition coil. A coil wound for,
large amperase but low voltage pro-
sduces wide red spark. A high vol-
tage coil gives forth, blue-White
spark, while a coil which has part or
its winding short circuited will give
thin spark, very weak. and one
which will not leap across wide
sap at the plug points.
S.--How can vibrating or Tattlins
tenders be silenced?
To stop rafting of tenders or brar.
es at bolt fastenings remove the bolt
and insert two steel washers and a
soft washer. preferably of leather,
the latter being placed between the
two former, then replace the nut. A
rafting hood may be silenced by
placing leather or felt between it and
its resting place.
(Which is the secondary winding
of an ignition coil, the interior or ex-
terror or exterior winding?
The secondary winding Of an igni-
ton coil, consisting Of thousands of
feet of fine copper wire is wound
around the primary winding, Of
shorter and heavier wire. These wind
ings are insulated from each other
by silk thread
5.-What are causes Of a carbureter
mixture which is too lean or too
rich?
A lean carbureter mixture-too
much air and not enough gasolene, is
caused by poor float valve. needle
valve or air adjustment, clogged
spray nozzle, feed line or supply
cock at tank or a leaking inlet man
ifold A mixture that is too rich-not
enough air and too much gasolene
may be caused by float valve,
which is sticking open, poorly seat
ing, an air valve which will not open
sufficiently due to too strong spring,
needle valve with too large an
opening or float loaded with gaso-
lene, which will not allow the float
valve to close.
G.-Can sover- sized tire chains be
used on standard sized tire?
An diversified set of tire chains
can be cut down to Mt q smaller tire.
If fit properly they will give as
o1,i In
intended for the tire.
7l-How can the cause of hard
starting be located?
If you do not know the cause of
hard engine starting, whether it is
in the fuel or in the ignition system,
good way to locate the cause quick
ly is to revolve the engine with ig-
milton switch in the off position and
the throttle fully opened. After a
number of revolutions switch on the
ignition while the engine is still
being turned over. If the ignition is
in good condition the engine will
start with the first revolution after
the switch is closed.
S.-Does the magnetic generate an
alternating or direct current? Why is
this SO?
The automobile magnetic gener-
ates an alternating current. 1t differs
from the generator or starting motor
inasmuch as it is wound for high
tension work having a higher VOL
tage armature, but no commutator
as have the latter two electrical
machines It generates only alter
mating current suitable for ignition
because of the fact that the lines of
force from the north to the south
pole of the magnets are cut with each
half revolution of the arma ture.
thus reversing the direction of cur
rent flow each half revolution. This
is called alternating current.
9-What is 4 good, simple mixture
for cleaning sheet metal parts of the
car. such as tenders, hood and side
dust shields?
\ simple mixture for cleaning
hoods, tenders etc which have be-
come cloudy with oil and grease is
to use a half and half solution Of