South Bend news-times. (South Bend, Ind.) 1913-1938, 1917-06-17

or stop. / ind the carburetor splits
back and pops II I do not entirely
close throttle lever this does not
take place Is this a sign my mix
ture on high is too weak, or is the
throttle valve intended 10 be so set
as to remain open a little when lever
is up or closed2 I am trying 70 run
on as weak a mixture as possible.
w K.
Either your mixture is trifle too
weak on low speed or the idling adj
justment screw is not set correctly
Screw IL up against the stop about
half a turn ard see II trouble is
remedied. If not replace it as be
fore and screw up on low speed adj
justment.
Motoring Department The News
Times have a 1917 model four
cylinder car. Would you please pub
lish in your paper what my troubles
are, and would il cost much 10 make
the engine run smooth again? In
running on a little up grade in high
gear my motor or something knocks
terribly like "A hollow tin can sound.
! can hardly speed my car up any
more The car is a new one but
can hardly get it up hills on high
gear, as IL near stops. IL runs fine
on the level, but 1 have a pounding
noise when motor is running. Kindly
advise what causes the motor 20
knock as L will have it repaired.
W. ]. S.
The trouble is probably due 20
carbon knock. Speed up engine and
pour 25-cent bottle of hydrogen
peroxide through air valve on air in
take of carburetor Pour this slow
ly and some Of the carbon will be
removed At the first opportunity
have the cylinder cleaned and the
valve ground.
Motoring Department. The News
Times-Which is considered the bet
ter control, that by accelerator pedal
or by hand throttle on steering
wheel? Does not the jouncing of
the car particularly on rough roads,
make the accelerator pedal unsatis-
factory as there is a tendency 10
give too little gas or too much, and
so make the car unevenly?
G. s. K.
With properly fitted foot rest
the foot throttle Will be found TO be
best. as it allows the hands 10 be
used merely for steering. For city
driving we set the throttle lever at
about the lowest speed we shall
have 20 use and speed up by the &C
celerator pedal whenever the coast
is clear. For open country driving
We set the throttle lever at the speed
at which We wish TO run and use the
accelerator very little. This relieves
the strain on the foot As we APP
proach a block or crossing, we
throttle down by hand. The foot
throttle is best where we change
speed frequently. the hand throttle
where little changing is necessary.
on very rough roads the car must
he driven slowly. and the aCCelera-
tor pedal is best, as it enables US to
quickly take advantage of any
smooth spots as they occur. Some
drivery get best results with the
hand throttle and some with the
acctHrator pedal. The question is
not susceptible Of any definite an
swer. as it depends partly on the de-
sign Of foot rest and partly on the
drivers skill.
Motoring Department. The News
Tmes-Is there a rule 10 determine
the horsepower Of "A gasoline motor
from the bore and stroke of the en-
CINE. and if so, will you kindly give
it to me through the paper?
s. y. T.
The :. A. r formula is always
used. but il leaves out the length of
stroke as unnecessary. Bore times
bore. times number of cylinders
diveded 10y %. gives the horsepower.
Thus. four-inch, siX-cylinder en-
CINE would he figured as follows;
-Four times four times six equals 90.
Divided by % equals IS horsepower.
The stroke is left out because IL Is
assumed the piston travels at 1000
feet per minute, which is about the
average speed.