El Paso herald. (El Paso, Tex.) 1901-1931, 1913-11-02

giving me very much trouble lately.
The oil from the crank case seems
10 work itself up through the push
rod guides and runs all over the base
of the engine I have to put half
gallon Of oil in the crank case about
every 200 miles. Is there no way 70
eliminate this trouble2-W. 5. b.
When the push rod guilds become
worn the oil will work past them
These guilds should be well fitted, and
the installation of new ones ana
plungers should prevent the trouble
Two Quarts of oil for 200 miles is not
excessive. Many makes Of motors con-
sumo more oil than this. Perhaps the
crank case has not vent pipe or
breather. Usually there are one or
two 5reathers in the crank case to
prevent the oil being forced out by
compression
Motoring Department, The Herald:
] am having a very perpleXing eX-
perience with my dry cells. put IN
a new set which tested % to 90, and
in less than two weeks they tested
only 10 to u. / use the cells for
starting only. What can the trouble
be2-OWner-
Dry cells are very unreliable. Some
times they will last in service six
months, and other times they viii not
last as many weeks. In your case
possibly a short circuit has caused
the deterioration you mention. MOis-
the batteries are located in a box on
the running board, water will get into
them when the car is washed Then,
again, should the outside castings Of
the dry cells become damp, or the
cells placed in a box having a damp
floor. they will short circuit If they
are placed in a metal box which type
is frequently used, the paper insu-
1atiOn viii cEsfe- and me cell short
circuit on the box, making a ground
and depreciate the others in circuit
Dry cells should be installed IN a dry
place free from moisture. They
should also be packed in manner to
prevent chatting Connections Should
be made to prevent short circuits at
these points. The wires leading to the
coll should be anchored In manner
to prevent chatting Dry cells should
also be placed so that tools and other
curreut-cOnducting materials cannot
cross the terminals and cause short
circuits. Some persons place the cells
among the tools and other car equip
ment disregarding possibilities Of
trouble.
Motoring Department, The Herald;
One OF the coils on my battery box
buzzes all the time. have looked for
a short circuit, but am not able to
find it What do you suggest is the
trouble2-Jacques Frankel.
It IS possible that a small strand OF
wire is making contact when attached
timer at that point is broken. If the
timer is old, would advise new one,
as the trouble may be inside and due
to excessive wear. Your trouble GER
tainly indicates a short circuit some
where in the primary
Motoring Department, The Herald
What is meant by spark advance and
spark retard2 Does advancing the
spark mean TO increase its volume2
NJ S. Apple.
Advancing and retarding do not
affect the volume of the spark, but
rather the time it takes place in the
cylinder in relation to the piston posi-
ton. If the spark occurs when
piston is past dead center it is then
termed retarded; if before dead cen
ter then it is advanced. When crank
Ing motor very slowly on battery
system the spark must be retarded
otherwise an explosion may take
place in the cylinder before piston
has reached top center and reverse.
This reversing is termed kick and
is dangerous The amount of adj
vance 10 give the spark when driving
depends upon the speed Of the motor
If the motor is pulling hard and
turning over slowly then the spark
cannot be so far advanced If turn
ing freely and fast, then the full ad-
vance is advisable.
Being interested IN automobile con-
structiOn I would like to know why
the flyWheel is constructed with
blades What advantage does this
give motor. Are there many cars
using this construction nOw2-Stu- 7
dent
There are a few cars which use this
It is usually found on
motors having the thermo syphon
cOiling system The fanlike blades in
the fywheeI serve to draw a current
OF air which helps to keep the motor
cool In other words, its purpose
is practically the same as that Of the
ordinary fan at the forward end of
the motor
Motoring Department, The Herald
/ have been a reader of your questions
and answers for some time, and wish
to ask a little Information about pis-
ton rings / am OVerhauLng my motor
myself and am somewhat of a me
chanic, but do not know what clear
ance should be given the rings VIII
you please give me some information
regarding this. and also how they
should be instalIed2-S- D. NJ.
You probably are aware that the
plStons cannot be a tight fit in the
cylinder Enough clearance must De
allowed for expansion and cOntrac-
ton. The amount of clearance usually
ranges between $1,000 to 10000 OF
an inch. By reason of this clearance,
packing rings or piston rings must I
be used in order to prevent any leak
age past the piston. These rings are |
made Of cast iron and should be care
fully fitted into the groove of the pis- /
ton After the ring has been fitted TO /
the groove care should be taken so /
that there viii not be too much or
too little opening at the ends of the 1
ring. Usually the rings are fitted /
first in the cylinder to get the prop !
Pr diameters and then fitted to the 4
grooves on the piston. When a ring 4
s fitted in the cylinder enough clear J
lnce must be allowed at the ring ends /
Tor expansion and contraction. This 4
clearance is usually about three or five !
1ne-thOusands of an inch.
X
Motoring Department, The Herald
have car which has internal in
closed brakes. but neither Of them
viii hold at all When I tighten them
they seem to drag and heat very much.
Do you think by taking off the rear /
wheels and cleaning out the grease.
I any, would overcome this trOuble2
Would YOU kindly advise me how to
take off the rear Wheels2 I have I
-ried, but could not remove the wheels /
after / took off the outside cap and /
bolt have washed them out with /
gasoline also. but still they DO not |
lol0. Any information viii be appreci-
-ted.--Charles Bradshaw.
There is no adjustment of these I
brakes inside the drum. The only |
Il cfr1nT1T IS orrrcfIa [