The Oskaloosa herald., 1916-03-09


starting in cold weather.
! A good grade Of gasoline, one which
win vaporize quickly. is perhaps as
good US anything you might compound.
! The use Of mixtures of ether and gas
Oline or picric acid and gasoline will
give more fOrceful explosion, but
' their use Is not advised. If you do
! wish to use these chemicals the picric
acid should be mixed In the proper
lions of one ounce to FIVE gallons Of
gasoline aud the ether three ounces to
five gallons. ....-
| Are wide rings in a cylinder Of any
| more advantage than narrow onos2
The wider the ring the greater the
FRACTIONAL resistance. However, the
wide rings tend to decrease the eX-
tent of the leakage of mixture and oil
past them. ~
viii you kindly explain the duties Of
| the coil?
1t Is taken that you mean q trans
, former coil used in connection with a
coil is used to raise the voltage of
the initial low tension current. A low
tension magnetic or storage battery
generates current of such low pressure
4 that 1t will not jump the gap In the
spark plug. In order to make 1t jump
p, the gap the current is passed through
coil inside another coil, and while II
I Is passing through 1t is suddenly In.
terrupted.. At the moment Of interrup.
| ton high tension current is induced
In the outside coil. This high tension
current Is passed on to the spark plugs.
How often does a magnetic have to
be rema gnetized? ..
Much depends upon the conditions
under which the magnetic operates.
I Once year appears to be the average
, period. ...,
Can you give me a formula for a
body polish?
| A very good polish for enameled body
parts Is made of the following ingre-
dents: Three ounces, of, citronella. one
pint of paraffin oil, one gallon of tur-
pentine and one and one-half ounces
OF Oil of cedar. These should be mix
ed in the proportions named and APP
piled to the parts with cotton cloth.
After applying rub the parts we'll with
another clean cloth. This gives an eX-
cellent gloss, and the more 1t is rubbed
the higher will be the polish.
| Will a load pull more easily with a
ten foot line than with a one hundred
| foot line?
1t makes no difference whether the
tow line is ten feet long or a hundred
feet long. for under the same condi-
tons of grade, load, time, etc, the
power required for pulling will be the
same. II the rope is very long and
drags on the ground the added friction
will require more power.
There II knock in the engine of my
car which can 90 heard only at q
speed Of 30 m. p. h. or above. This
knock resembles the sound of ham
The position Of the spark lever has no
effect on it. What would bs the prob
able cause Of this2
This kind Of knock is most likely
due to one of two causes. Either you
have loose connecting rod bearing
or one Of the main bearings needs ad-
justment. There is only one remedy
for the rod knocks, and that Is to re-
move whatever part of the crank case
gives access to the bearings and to
properly adjust them. II shims are
placed between the cap and rod end
such thicknesses should be removed
as necessary to make up for the wear
that caused the looseness. The degree
to which the bearings have been tight
ened usually can be determined by
turning or rocking the crank shaft
Tapping the cap with q hammer is
sometimes a good indication TO an ex-
perienced man of the tightness of the
bearings. 1t should be remembered
that there Is a medium between hav-
ing the bearings excessively tight and
too loose. The babbitt will soon burn
Oub III DCuAlhS "hlSh - LOO llShllg
set up, or II 1t does not burn out it
will wear away rapidly. After the mo-
tor has had its bearings taken up and
adjusted 1t is most advisable to run It
under light load for several hours be-
fore using it on the road. This will
serve to wear in the bearings, and dur
ing the limbering up pr1 cess llenty Of
oil should be supplied. About the
same procedure is required in taking
up any play or looseness in the main
bearings. Possibly the babbitt will
have to be worked down to a smkoth
surface before replacing the caps.
Can q magnetic, without disassenr-
bling, be tested on = shop bench to as
certain IL magnets are weak without
using special equipment? u 90. howl
/ The magnetic can be removed from
the car and driven by belt at various
speeds. II the magnets are weak 1t
can be detected by the weakness Of
the spark at low speed. II you viii
write the manufacturer of the magnetic
be win tell you the width Of the gap
that the magnetic spark should jump
under atmospheric pressure at differ
A..