The Sunday telegram. [volume] (Clarksburg, W. Va.) 1914-1927, 1915-08-22

for cogn60gTtohl;
The only reason that we preheat fuel
is to thoroughly vaporize it, In other
words, for given volume ana given
mixture n great amount of heat units
will be contained In the cooler charge
provided that. both are completely va
porzed. The reason for this Is that
the heat expands the charge, thereby
permitting smaller number of units
of discharge to be contained I'm a Civ
en- volume. The fact that some OF the
heat units which would ordinarily be
lost are returned TO actual use by pre-
heating the charge is factor in the
situation and does reduce the differ
ence between the two conditions, but 1t
is doubtful If as many heat units would
be given UP in this manner as would
be lost by having preheated charge.
The pra ctical side or the question, how
ever, is one which must be looked upon.
With the gasoline that we are now get
ting it is necessary to use heated air
IL the best results are to be attained;
otherwise the fuel will not be yaporiz-
ed, especially during cold weather.
How many teeth are needed for two
to one and two and half to one ratio7
The gears should be such that there
are twice as many teeth on the large
gear as there are on the small gear,
In order to get n two to one ratio. For
a two and one-half to one there should
be two and one-half times as many
teeth on the large gear as there are on
the small one. The ratio may be OBJ
tanned with an infinite number OF COM
binations. The size Of the gearcase
will determine the size of the gears,
and then the shape and distance be-
tween teeth must be found to get the
number OF teeth needed.
Is there any possible way in which
can install a pressure feed oilin9 sys-
tenn on my carr It has splash system
at present.
It might be possible to install this
pressure feed. but 1t would not be adj
visable. In the first place, a great
amount of special engineering work
would be required and many new
parts, such as hollow crankshaft
and the pump itself. This would en-
tail a great outlay of money which
would mot be jistifiabIe, Because. aft
er the system had been worked out
and installed on the motor the under
taking would. in every sense OF the
word. be an experiment. Any trou-
bIes YOU may have been having with
your oiling are probably not due to the
original design. but to some local de-
feet which has come up and which can
probably be readily cured in a much
more simple way than by altering the
entire system.
Should the clutch be thrown out on
rough roade7
The clutch should be thrown out
and the brake applied slightly when
deep ruts are encountered, and many
drivers make riding easier by period
ically throwing the clutch on rough
roads. If the motor will pull slowly
there is no reason, however. for throw
ing out the clutch.
What valve timing should one use on
a two cylinder opposed motor with
bore of four and quarter and stroke
of four and half7
Since the valve timing which will
give ideal results for any given motor
Is variable quantity and depends
largely upon such details as manifold
| design, the only thing which can be
| done is to give an approximate timing.
from which you can vary in one direc-
! best results IL the cams arc already
made and in the motor you can only
place them so that the valve openings
will correspond with those given and
!, allow the closing TO take care OF itself.
| A fairly average timing which should
| give good results is as follows: Intake
\ valve opens ten degre .S after upper
| dead center and closes thirty-1ve de-
| grees past lower dead center. Exhaust
valve opens forty degrees before lower
center and closes five degrees past up
| per center.
Does IL harm high tension magnetic
that is, where car is run by ono
| alone-eo shut off the spark going down
| hill and brake with your gears? Is this
the best thing 20 do on steso hill?
And could this harm the cylinders?
| It does not harm high tension mag
| neto TO do this, as no mechanical strain
| is put upon it, and naturally 1t does
| not generate current when switched
or The practice OF using the motor
as brake will not harm the cylinders.
but 1t Is said to put considerable wear
| on the gears. due to the reversed ac-
| ton of the reduction-that is. If the car
should be geared four to one when the
motor is acting as brake the reduc-
ton acts in an opposite direction and
becomes one to four
How can stop rafting of seissors
type shock absorbers without tighten
linz up the bolts until the car rides
hard?
To stop rafting of scissors type
shock absorbers without taking up on
| he bolts until the car is hard riding.
L ld1y nuf from
", old tube. on each side Of each wood
~ washer as furnished.