El Paso herald. (El Paso, Tex.) 1901-1931, 1913-12-27
Copyright, 1918, by ". H. Stewart, j.


Motoring Department Herald: Is
there any way to run lighting sys-
TEN on an automobile by using the
magnetic to supply the curreut2 Hoping
to see this in your paper and W1tnoul
any address, I remain. yours respect
fully, Jas. Johnston.
The magnetic cannot be used for
lighting purposes. 1t is designed TO
generate ignition current only
Motoring Department, Herald; There
is a bulls eye sight feed on the dash
of my car that had a glass IN IL apoul
the size of a half dollar. II was broken
and I had it replaced with celIulold-
What effect does oil have on the cellu-
loid, and viii il serve the purpose Tor
any length of time?-Reader
The effect of oil on celluloid IN the
case you have mentioned is not to be
considered. In time the celluloId VIII
become clOuded and as result not
transparent
x
Motoring Department, Herald; How
can make a paint for motor car rims
which viii prevent rust2-B. H smith
Remove the rust from the rims by
scraping and sand paperlng- Clean
thorOughly and then apply a coat OF
ordinary shellac mixed with some
graphite. When this has dried thor
oughly. apply another coat. Some peO-
PIE use an aluminium paint to ad-
vantage.
Motoring Department, Herald Can
a wheel equipped with an old style
clincher rim be changed to demounr-
able rim2 And is it then possible 70
use the clincher tire on the demOunt-
able rim &C. H. Reeves.
It viii be necessary to build up new
fellOes on the wheels. If YOU have the
same size demOuntable rims Installed,
it viii be possible to use the same tires
again.
On some makes of demountabIe rims,
It is not possible to use Tugs with the
CIinCher type tire In such cases 1t IS
best TO use the Q. D. especially
on the rear driving wheels. If a
clincher shoe is used on the rear wheels
without Tugs the tendency viii be for
the tire to creep on the rim and shear
off the value.
Motoring Department, Herald: I have
a - which ran nicely for 1000
miles. then it began to miss. gradually
getting worse The ignition is all
right, the exhaust valves have been
ground in, and the cylinders cleaned.
The compression seems good on all
the cylinders. Power on the third and
fourth cylinders seems weak. The
power is good on the first two cylln-
ders- The engine misses the same when
running slow or fast. The magnetic is
in good condition.. S. Atwood.
Since there is weak compression on
the third and fourth cylinders, you can
hardly expect good results from the
motor. While the valves may have
been ground only recently. this does
not necessarily mean that they do not
need reseating again. Very often
small particle of carbon viii lodge un-
der the seat -Of the exhaust valve and
cause trouble, even though the cylin-
ders have just been cleaned.
The piston rings may be lined up in
such a way that the openings are all
in line and lose compression It is also
possible that the spark plugs in these
sibly, the insulators are cracked and
permit short circuits.
Motoring Department. Herald; Why
do the cylinders of my four cylinder
motor become hotter when driven at
the rate of five miles an hour in first
speed, than when driven at Is miles an
hour on third speed2-C. B. Hoffman.
Because they do not get the same
cooling effect When travelling at five
miles per hour on first speed your
motor is turning over faster than when
travelling at IS miles per hour on high
speed Consequently, the cooling sys-
TEN has more work to do.
The slow forward movement of the
car prevents radiator and motor being
famed by the same air currents You
can readily see that the car travelling
forward at Is miles per hour with rev
OlutlOnS per minute of meteor the same
or slower, viii receive a greater cool
ing breeze over radiator and motor
than the slower moving car This diff
ference will determine to large de
gree the cooling or overheating of
motor.
Motoring Department, Herald: have
car that gives me q lot of trouble
starting in this weather. I have to
prime it three or four times to get it
going. When it is running 10 to Is
minutes the water gets very hot and
the exhaust pipe gets almost red hot,
and there is sort of popping noise
from carburetOr which is a StrOmberg.
Water circulation is all right but pump
seems to have a knock when running
on magnetic, but not on battery. Have
had engine cleaned of carbon three
weeks ago.
Thanking you in advance for any in
formation YOU may give me A con-
slant reader of your paper-F-- S. Jr.
1t appears that there is too rich a
carburetOr mixture; also that the spark
Is too late A rich mixture in con-
junction with a late spark win cause
oYerheating. This also may account
for the difficulty in starting
If an intake valve does not seat
properly AT all times there viii be a
popDing back In carburetor.
The knock in pump can hardly be
que TO magnetic ignition A knock
Is often difficult to locate and without
doubt is due to another cause.
=
Motoring Department. Herald. VIII
you please tell me what can be the
matter with my gasoline line? A short
time aeo my motor started to run.
erraticallv and would exhibit an the
symptoms Of not having enough gaso- /