Evening times-Republican. [volume] (Marshalltown, Iowa) 1890-1923, 1920-10-27
The Auto, Quiz

How does an electric generator
create current at the start without
the aid of a storage battery OF
other means, to make lines of force
necessary for the generator to pro-
duce electricity?
The electric generator consists OF
magnetic field, or magnet with north
and south pole and an armature.
The field is usually an electro-mas-
net, made OF core OF soft iron
around which is wound many turns
of fine copper insulated wire. Be-
tween the poles or ends or these
magnets flow lines of force. or mag
netism, similar to those OF the COM
mon horse shoe magnet. This mag
netism is necessary for the generator
to produce current. The armature !.
also core Of soft iron with wire
wound around It lengthwise, and re-.
wolves In the magnetic field. cutting
the lines or force flowing between,
the poles, with each half revolutions
Thus is current induced In the arnnt
ture and passed on thru the outlet.
wires. When the generator is first
built the field has no megnatisn,. ~
lis run as a motor, receiving current
from the outside, which partly mag
netizes the field. When the arma.,s
ture starts revolving 40 q Eeneratos
the lines OF force between the poles
gradually become stronger and reach
their maximum strength as the spees
of the arInatll1e increases. Whe4l
the lines OF force have reached the
maximum strength the current OF tnA,
generator will be at its greateats
which is after a hundred or more
revolutions. I
2.-Whens your engine is losing
compression and you are not certain
where the leak occurs, how can you
tell if the valves or the piston rings
are at fault? s.
One way OF discovering the source
OF lost compression whether 1T n
thru the valves or piston rings Is ~
feel the crankcase after the engiIfes
has been running. II the leak occurs
thru the rings the crankcase will be.
unusually warm, due to the presence
within OF hot gasses. while If the
rings fit well and the leak occurs
thru the valves no heat in the crank
case will be noticeable. SIS
blow should electric headlight
bulbs be focused SO that the greats
est efficiency is derived from them s
In replacing electric headlight
bulbs adjust them so that a point or
beam of light strikes the ground
~ ,,Jo a
from the reflector a dark spot Will
appear in the light and If the bulb il
too close to the reflector the result
will be too wide light and one
which will not penetrate the dark
ness any great distance away. 5s
4.-Will standing in closed tank
for length of time have any bad
effect on the igniting or vaporizing
efficiency of gasolene?
A small amount of gasolene if left
standing considerable length Of
time even in a closed tank will lose,
it's igniting efficiency because Of
chemical changes and, evaporation.
5.-What is simbple way to re-
move CARBON from the cylinder
heads?
Besides the numerous patent car
bon removers on the market good
way and a simple one to clean car,
bon from cylindeG heads and tops OF
pistons is to pour denatured alcohol
into the cylinders thru the spark
plug openings after the engine is run
enough to make it warm. Run the
engine for a few minutes after the
application. The alcohol softens the
carbon and tends to free it from the
metal surfaces, aided by explosions
and exhaust strokes within the cylin-
derS.
(Which is the most simple igni-
ton system? Is it used to any great
extent today?
The most simple ignition system is
called the make and break system.
With this system no spark plugs are
movable contact points within the
cylinder 1t is no longer used be-
cause heat created inside the cyl
inders soon causes these points to
foul or burn and get out of adjust
ment.
How can you tell if any of the
piston rings are broken?
If piston rings are broken the
spark plugs. tops of pistons and
combustion chamber will be oily and
there will be loss compression.
This leakage Of compression and oil
in the result of the rings not fitting
snugly against the cylinder wall.
S.-Why is the non reversible
steering gear constructed so that
there will be a certain amount or
play or back lash?
A small amount of back lash or
play is to be found in the non-re-
versible steering gear so that the
wheels and tires will not be sub
jected to side strain. This type of
steering gear will not give or allow
the wheels to turn independently
when ruts are encountered on the
road, SO that a certain amount of
back lash is necessary TO avoid wear
and strain on wheels and tires, and