Aberdeen herald. [volume] (Aberdeen, Chehalis County, W.T.) 1886-1917, 1915-08-26


!, What IL the formula for connecting
I'D jsnsthf
There is no formula for connecting
rod length. this being determined ar
bitrarilys As rule, the connecting
rod q made about twice as long a. the
stroke. This particular figure has been
chosen, because when asconnecting rod
IL made longer than this the overall
height Of the motor becomes too great.
adding weight and increasing the cost
OF manufacture. Increase in connect
ing rod. length means greater recipro-
eating weight and It is desirable to
keep this as small AZ possible. When
connecting rods are made much short
er than twice the stroke the angularity
Of the rod when the piston Is In the
center Of its travel produces undesir-
able pressure on the piston wall
Whore would you consider the proper
place for sasoIine tank7
This depends on conditions. There
are advantages in every location. II
placed under the cowl the gasoline can
flow by gravity to the carburetor. yet
the carburetor does not need to be
placed as low as when the tank Is I'M
der the seat. BY locating the carbu-
rector higher, It 10 more accessible and
the, intake pipe Is shortened. giving bet
ter carburetion. The gasoline is warm
ed BY the heat Of the motor so that
in cold weather, at least, carburetion
is facilitated.
The under. seat location Of the tank
also allows fuel feed by the simple
gravity method, but there Is danger Of
the dow. stopping when climbing a
steep hill. When the tank IL being
filed the passengers in the front must
be disturbed.
Putting the tank 1T the rear utilizes
otherwise waste space and allows the
space under the front seat and under
the cowl to be used for other purposes
There is slight objection to this loca-
ton, however, because the gasoline
must be fed to the carburetor either by
pressure or the vacuum system. This
means slight amount Of complication.
but 1t Is not serious, as is indicated by
the fact that the majority Of cars now
in use one or the other Of these sys.
TENS.
A very large percentage Of the cars
put on the market in the past year or
two use the vacuum system Of fuel
feed IN which the main gasoline tank
is located at the rear Of the car, while
a small auxiliary tank is placed on the
dash, usually inside the hood, to give
gravity feed to the carburetor.
On q level road or slight ascent my
car runs we'll, but on sleeper grades Il
misses, chokes and back fires. ] had
new rings put in and the compression
seems good. What 10 the cause7
From the information given it would
appear that the gasoline line between
the carburetor and the tank is slightly
clogged The gasoline flows through
rapidly enough to feed the car under
conditions obtained on the level road
or on slight ascent, but on sleeper
grades the feed is not fast enough to
do the work. II you remove the pipe
connecting the tank and carburetor and
clean thoroughly it will probably end
the trouble.
Ny car will not hold compression
very we'll. put in two new rings, and
think they do not TT we'll enough 40
yet, az the car has only been run about
thirty miles since. The compression
was fairly good with the old rings, but
thought ; could improve Il with new
ones. 10 there any way to make them
TT more tightly by using grinding com.
pound7
In order to get the new rings to at
we'll at once they should be Tapped in
by means of a grinding compound
The cylinder is put on a bench and
the piston worked out and in with q
sort of i.r r, turning movement
similar to ,aai I.>e.i In grinding q
valve. This work an be done BY an
amateur, bli s.:in...d not be attempted
without first having observed carefully
how 1t is done. because 1t Is easy to
spoil the piston and cylinder. by un-
equal abrasion. The probabilities are
that the new rinr wiz wear in and the
compression will he tighter after you
have run another two or three hun.
dred miles, and altogether 1t would
probably be better for you to wait and
see that this does not happen unless
va, oar eyo< Tho corvicoo NJ an oNs1ort