Aberdeen herald. [volume] (Aberdeen, Chehalis County, W.T.) 1886-1917, 1915-07-11

Can you Tell me the proper way -
- new soldeeine iron and ether gen.
80 Information In connection wlth The
wssk u seldsrlnef
ne the iron perfectly smooth and
ut It just enough to melt solder cas-
~. Then dip Il into strong solution
= 0lammoniac for an instant Final
y rub II into stick Of solder and then
Gshibute the solder adhering to the
- By rubbing with piece Of cotton
vaste. When this u done the iron b
ssaAy for service and win not require
nueinning unless It = burned
caa yeu Give mo IN ldsa 81 the chem.
1nal equation which takes place when
Opssdins . proper mixture 81 gasoline
- airf In what way do the end
OEsdwets differ from thess ~ mixture
= ksrssens with air and watsef
II the gasoline In an explosion In an
1stsrnal combustion engine y burned
ssnpletely the resulting gases would
- water and carbon dioxide. How
svsr: this condition rarely exists, %
tlAsEs are always some unburned gases
- the exhaust Of an engine. The end
DEsaucts from gasoline engine do not
dl6ef from those Of kerosene en-
gise when complete combustion takes
p1ncA
ny car begins 10 lag whom about half
Way up Z hill. Does the slantino posi-
60 Of the car interfere with . proper
aappiy Of gasoline to the earbursterf
Il d not likely that your trouble Il
- to the position Of the tank, but It
= probably caused by dirt in the feed
p1pA The dirt does not prevent the
Nv entirely. but reduces It 20 that
~ enough gasoline b supplied to the
Eat chamber to satisfy the extra de-
and put upon the car when It u
climbing a hill. Disconnect the feed
plps ct the carburetor aud note wheth-
= tho dow II free; II not, remove tho
pepe and clean 1t with wire. II the
trouble still persists adjust the car
1Wetor to give a richer mixture. Tho
gnsoline dow, due to the low position
q the tank, should not be affected ex-
sspt ON q steep hill. II you feel how
Gver, that the dow Is not sufficient you
night install tank holding about q
INT directly in front and slightly
above the carburetor. This tank is
neEely connected In the line, has no
valves and Is only reservoir. but with
sulhcient capacity to carry the car
Gver the longest hills, even though the
supply OF fuel were cut OF.
Can you give me some information
- 60 automobile valve timing?
The timing Of motor depends on
whether the greatest tongue or twist
~ effort IL wanted ut low or high
speeds and whether 1t Is desirable, to
lave \ silent motor. For instance, II
. motor with q particularly good torQue
1t low speed IL wanted. then the ex.
Aaust opening should be delayed more
than usual so that the expansive force
Ct the gas will be exerted to the ut
most On the other hand, II the motor
= to develop maximum t0rque at
high speed 1t Is better to open the ex:
Aaust valve earlier so as to give the
gas plenty Of time to flow out The
seduction in back pressure due to this
more than compensates for the small
anount Of expansive energy that Is
thus thrown away.
Exhaust closure should occur at dead
center or slightly after. On a slow
speed motor it would be all right to
close the exhaust valve right on dead
center, but II this were done on a
motor that had a maximum speed Of
say 1000 revolutions or more the
seavcnging Of the cylinder would not
u as complete as II the closing were
delayed few degrees. The reason for
this is simple. When the gas is hew,
Ing out through the exhaust valve at
the high speed that Is obtained when
he motor is running at this rate It has
Z perceptible amount Of momentum. al
though its actual mass Ia very small.
Therefore the tendency IL for the
column Of gas to keep on flowing when
the piston reaches upper dead center.
This action naturally helps to suck out
. little gas after the piston has ceased
% force 1t out
The opening Of the inlet valve should
oake place shortly after the exhaust
valve closes. its exact point Of opening
depending on whether the designer
eonsiders It best to begin to al the
cylinder with a rush. In the former
ease the valve In made to open at
about top dead center. and in the latter
esss the opening in delayed possibly AZ
much AZ twenty degrees. II the Open
~ 70 delayed a partial vacuum n
11Emed in the cylinder. due to the fact
tAat the piston moves out and expands
~ Gns below atmosphere. Then when
~ inlet valve 10 finally opened the
charge PUSHES In to ali this vacuum.
TIT action Il believed to give better
enrburetion by a great many design
~ The closing Of the intake valve.
~ as In the case Of the exhaust. de-
Dsnds on the speed Of the motor. II
~ momentum Of the column Of In.
yushing gns Il to be considered then
1lAe opening Il delayed 40 that the gas.
1nstead Of instantly stopping its flow
when the piston reaches bottom center.
Keeps on flowing. due to its inertia.
md in this way crowds in bigger
charge. II good power output at
high speed Is to be obtained then the
closure Of the intate must be delayed a
few degrees.
cclE DEcDcCT