Aberdeen herald. [volume] (Aberdeen, Chehalis County, W.T.) 1886-1917, 1916-08-03
Expert Advice For the
Automobile Owner
Queries and Replies Covering Matters Of
Importance to the Man Who Runs Car

switch have no trouble in starting Il,
but when ] stall Il or "kill" Il I have to
crank and spin Il around Z great deal
before can get IL started again. What
10 the trouble with Il and what remedy
would you preseribs7
Since your car seems to run perfect
iy except for this difficulty in starting
when the engine has been stalled this
condition seems to indicate that your
carburetor Is adjusted correctly and
that your engine Is working at maxi
mum efficiency. It would be very easy
to make your motor less difficult to
start when stalled, this requiring sim
ply that the carburetor be adjusted to
supply q richer mixture to the cylin.
ders. The reason you have a hard
time stopping the engine when stalled
is that It g stopped instantly and the
cylinders contain only inert dead gas
which gives no explosion when the
spark Is turned on. When the motor
Is stopped on the switch, on the other
hand, 1t makes several revolutions be.
fore coming to rest, thus pumping
fresh charge Of live gas into the cylin.
ders. With this live gas under com.
preston in the motor starting Is an
easy matter
1t would seem best to leave the car
buretor as 1t is, for 1t Is saving you
money in gasoline and wear on your
motor, as well as preventing accumula-
ton Of carbon in the cylinders You
should be more careful In driving to
see that the throttle is always open
sufficiently to meet the conditions Of
road and load. An expert driver or
one who Is familiar with his car rare
~ stalls his motor. and by giving at
tention to sufficient throttle opening
you should avoid this trouble.
that the intake valve opens before the
exhaust 10 closed. What 10 the reason
for this7 Would Il not allow the OK.
haust gases to back up into the car.
burstor7 Or, II not that, would Il not
impair the suction Of the intake
charged
The point is often brought up as to
why the exhaust valves are left open
after the inlet has been opened, and
also why the exhaust is opened before
the end Of the power stroke. thus al
lowing some Of the explosive pressure
to escape through the valve opening
Examination Of the conditions Of op-
Grafton soon dispels any thought that
the exhaust should remain closed un.
til the very end of the explosion
stroke, at least.
As q matter Of fact, the practice Is
almost universal Of leaving the inlet
valve open until the piston has not
only reached the bottom Of its suction
stroke. but has actually started back
on its compression stroke. ordinarily
about one-half inch up. At first
thought It would seem that some Of
the gas drawn In would be forced back
again into the inlet passage, but the
speed Of the engine must be taken
into consideration. At a normal rate
of running about fifteen cycles would
be completed in one minute with q
moderate speed engine. and at such a
speed the piston has reached the low.
est point Of its stroke before the gas
has all been able to get in, because the
gas moves slower. So even when the
compression stroke has begun there Is
still some slight suction tending to
draw more fuel In.
In charging q magnet how much and
NAsyH ~ aha NAesAA ~hAsslA I A.
secure the best results on q ITO volt di.
rect eurrentf How many lamps will
have TO b used in ssries7
There are a number Of sizes and
shapes Of electro magnets that would
do your work, byt perhaps the most
practical and easiest to make Is one
that has a diameter Of about four inch.
es and a height Of about seven and
one-half inches. The core should be
made Of a cylindrical piece Of soft iron
about one inch In diameter, and you
can use a disk Of fiber material at
either end to hold the wire on. Care
fully wrap the iron core with a piece
Of heavy oiled paper and then shellac
It. Leaving about twelve inches Of
length free, wind about ten pounds Of
insulated copper wire around the core
carefully and evenly throughout its
length Wind the two spools in oppo-
site directions 90 that q north pole Of
one will be opposite a south pole Of
the other when you assemble the two
wound spools side by side on q wooden
base 30 that they are about one-half
inch apart Connect them in series and
then run the end wire from each to
the current source through a switch.
You would not have to use any lamps.
Which gives the brighter light, . elk
volt lamp Or . seven voltfs The bat.
terry 10 . elk volt storage, and what 10
the right candle power 70 uss7 Does Il
harm the battery 70 uss seven volt
lamps? Will Q seven volt lamp burn
out ~ easily 40 elk volt?
On six volt circuit the six volt lamp
will give the brighter light. although
its life will not be as long as the seven
volt. The candle power can be any
thing you choose. but the greater the
candle power the more current will be
consumed. Lamps which are up to date
burn about one watt per candle power.
1t does not harm the battery to use
seven volt lamps. and a seven volt
lamp will not burn out as quickly as
a six volt on six volt circuit.