Aberdeen herald. [volume] (Aberdeen, Chehalis County, W.T.) 1886-1917, 1915-07-04

The spark lever on my car 10 very
hard to turn, especially when the mo.
tor 10 hot. Whore do you think the
trouble ID, and how can remedy Nf
While this stiffness may be In any
Of the joints Of the linkage operated by
the spark lever. 1t Is most likely that
the breaker box is too tight 1T. sc
that when the motor becomes heated
the expansion Of the part on which Il
fits causes It to stick. Disconnect the
breaker box from the linkage and note
whether 1t moves freely. II 1t does
not. remove 1t and rub the interior
surface with emery paper. until enough
material has been removed to allow II
to work freely.
10 the compressed oxygen method
satisfactory for cleaning carbon out Of
cylinders 90 that the pistons and valves
will be thoroughly cleaned, Or 10 die.
assembling engine and scraping the
different parts necessary?
Removing carbon from the cylinder
by the use of compressed oxygen is en-
tirely satisfactory and highly to be
recommended. However. it is some
thing that Is best done by garage. a.
1t would hardly pay you to buy an out
fit just for yourself. The carbon is re.
moved by burning. and the reason oxy-
gen is used Is that carbon, or any sub.
stance for that matter. will burn about
five times as readily in oxygen as in
ordinary air. Thus carbon will burn
with the rapidity of celluloid in an at
mosphere Of oxygen. yet the incrusted
carbon cannot be ignited when expos
ed to the ordinary atmosphere.
The operation Is simple. One Of the
valve caps and also the spark plug Is
removed from each cylinder and the
piston IL brought to top dead center,
Then the cylinder Is filled with oxygen
gas and piece of cotton waste is
dropped into the cylinder and lighted
As long al there is any carbon to be
burned oxygen Is supplied to the cylin.
der. The reason that compressed oxy-
gen is, used is so that a great quaint.
ty Of gas can be stored in a container
of given size. The oxygen gas is
never used under pressure In the cyl
inder.
How can make tire chains last
longer?
Upon examination of an old chain II
will be found shat all the wear and
strain are OH the link upon which the
cross chain is fastened.
When a cross chain wears through
and breaks 1t will be found good
plan to fasten 1t to the link ahead Of
the one 1t was previously fastened to
and to continue said operation until all
the cross chains have been changed.
10 leakage from cylinder rings into
crank case caused from the rinss not
being worn to fl cylinders or 10 Il
faulty ringer Also, when 10 fuel. con.
sumption the greatest, in climbing hills,
in high or low gear?
Leakage is most likely due to worn
rings. or 1t may be caused by the split
ends of the rings being in line and in
this way affording direct passage for
the gases. Before the rings are worn
enough to perfectly at the cylinders
there may be slight amount Of leak
age-that IL to say. the rings will
not hold the gas in the combustion
chamber quite us we'll as they will
when the rings have become worn to
perfectly conform with the shape Of
the cylinder. hut the extra amount Of
gas Is SO small thnt It IL hardly worth
while to consider II as II leakage.
The fuel consumption Is greater
when r,nnin. on low gear for two rea.
sons-the motor efficiency Is lower anil
there il II power loss due 10 the fD'ii
extra gears III the cet. set that the
driving torrrw mist i,r trar~Hsifte,.
through. The meter c.iieirny is ~
duced for t.,r rta~"i t.!at wi,rn .!lml'
Ing certain h..i "n intermediate 4"
low gear that might be climbed %
high the throttle n;"ni! /" required T.,
given speed j. less. tbs means thdf
the artral compression In thr cylinder
IL correspondence reduced AMI redu
ed compression lowers the eiEciru"y
Needless to add. the lower he cticien
cy the greater the CONSUMPTION Of fue,
bide 30 used in an automobile engine?
Yes. Occasionally we hear Of mo-
tOrtst driving home IN acetylene gas
when his supply uf gasoline IL ex
hausted. The objection to the Use OF
this gas II that 1t IL much more ex
pensive than gasoline
I notice that in the racing svents the
cars use castor oil ~ motor lubricant.
What advantages other than less smoke
has this oil?
Castor oil has greater viscosity than
any other oil used for motor lubrica-
ton at the high temperatures expert.
enced In racing motors; therefore 1t
helps to prevent the passage Of the
gases past the piston and the dow of
the oil up into the combustion cham
Der. where 1t would burn and cause
smoke. Since very little Of the castor
oil makes its way up to the combus-
ton chamber there Is very little that
is burned. but most of it ia used for
fabrication. with the secondary advan-
tage that much less oil is necessary.
1t Is not advisable to use this oil In
everyday work. however. because 1t
causes heavy carbon deposit.