The Sunday telegram. [volume] (Clarksburg, W. Va.) 1914-1927, 1915-05-02


of kerosene and leaving them for about
day7
As long as you are going to remove
! the cylinders it IS best first to SOAK
| them in kerosene. as you suggest THIS
will probably >rot remove the carbon.
but Will merely loosen it lt should
be taken on by scraping with sof1
| blunt metal tool such as screw
| driver. 1t should not be hard TO reach
! the corners when the cylinders are re-
moved
| VIVA. /. the difference in eenstrue-
| ton 5etween ordinary and cord tires3
Ordinary tires use fabric carcass or
one made OF a tough grade OF duck or
| canvas, while cord tires are built up on
/ a cord carcass, the latter usually being
| woven in such a way as to inpart
! great diagonal strength, rendering the
! tire less susceptible to vertical stress
| than with some other constructions.
VIII you please explain the difference
between the dual, double, single, two
| point and duplex electric ignition sys-
tems7
| The dual system employs two inde-
| pendent sources OF current, but uses
common set Of spark plugs and a COM
| mon high tension distributor The dou-
bic system employs two independent
| systems throughout, with two sets OF
| spark plugs. two sources OF ignition.
| two coils and two distributors. The
| single ignition system has but one
source of current one transforming
| system, one distributor and one set OF
| plugs Two point ignition IS where
two sparks occur at the same time 10
the cylinder. It must of necessity,
! therefore involve two sets of plugs and
syncIronized distributors
Duplex ignition is that in which both
a battery and magnetic current source
are used. but in which the battery is
connected with the magnetic armature
in such a way that It can produce
high tension spark by Ineans OF the
secondary winding OF the magnetic or
aid the primary ut Low motor speeds.
have found that the higher ties:
| Gasoline I use tho more power get
! and the hotter my engine gets. VIII
/ injure my motor by using mixture OF
/ motor and illuminating gasoline it the
| water eireuIates freely and does not
boil? The dealer tells me his motor
aas tests 6S and the illuminating gas
! 72-76 and sometimes more.
As long as the cooling water does
not boil it IS certain that the motor IS
| operating within the safe range of
! temperature.
Can you tell mo about what the
pressure per square inch IS on t!:> pis-
| ton of motor at tire time of tTrtn9;
I H. at
haust valve starts to open?
/ The pr .ure per square inch at ex-
| plosion DEPENDS upon the motor itself
to a lar-e extent but on ordinary four
! cycle gasoline engines, operating at q
| mean effective pressure of ninety
| pounds TO the square inch and ter
minal pressure of forty pounds TO the
| square inch. the combustion pressure
| on \ good average card taken by the
monograph would be about 800 pounds
to the square inch.
When running on the level or down
GRADES at fair rate of speed there is
a singing noise that seems 10 DO on the
| left side of my gear box, but gong up
| crade ! can run as fast az desire and
| the noise IS not there ! can give the
car good start down grade and tree
the engine and do not hear It any more
| until engage the clutch again. 1t
! doss not seem TO injure the pulling at
| all, but it s.en,s as If there were some
! parta rubbing This has keen ia the
| car for long time
From the description which you give
| il wouiI seem that the noise IS pro-
tiuced by the drive shaft pinion and
the diferentiaI gear not meshinS prop.
| cry. IL order TO overcome this It VII
Ice necessary for You TO install >rseia.
heat trestcd Parts The fact that -"
Iinion and gear are not u:eshinS Prep
criy causes q misaii-nment which sets
up vibration. producing the drumming
or singing noise
Why ard how does four cycle err
CINE back fire in the intake naan'foid
from lean MIXTURE when the engine
| is cold and spark retarded?
a mixture which IS 700 lean may 400
explode. or IL II does the explosion
| will be a poor one in which part Of tii'
mixture burns slowly witch fame
The Aamc STICKS to the CYLINDER val
until the inle; val-e opens. and thcF
| the inrusaInS flesh charge also IS l.
nited. causing an explosion OF the
/ gases in the inlet manifold and mixing
chamber.
world like to know whether could
! not substitute SIX volt storage bat
terry for the four dry cells used Tor 's-
! nitien on my car?
/ Rather than 90 to the expense OF n
| storage battery for this work. It would
| be probably better for you to use more
| dry cells and connect them in parallel.
+.
age battery would be apt also to burn
! out the points of the breaker mocha
nism-
Mp re