Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1916-05-28

.h'ANNe thV optShs VI III Is very
mpting TO see how fast the car can
go. or how fast you dare let it 60, but
DO not allow yourself to be tempted
during your novitiate; otherwise you
may never rise to the distinction of
an expert.
Silent Gear Changing.
Just how to make a neat gear
change Is point on which every
novice wants information, and many a
motorist of experience lacks the
knack of changing with that smooth
ness which betrlys the sympathetic
driver. Much of the hashing Of gears
IS due TO want of understanding OF
the principles involved. The great
point is, of course, to have the gears
you intended to engage running at
about the same peripheral speed. This
means allowing the gear shaft to
slow down in changing up and to ac-
celerate 1t when changing down. 1t
Is the first two changes up and the
last two down which generally give
the trouble, hut these can be largely
overcome If some pains are taken 10
praticc particular method of effect
ing these changes.
To change from neutral to first the
clutch should he Withdrawn, and after
waiting about a couple of seconds for
should be gently pushed into the first
speed notch. For the other changes
up the driver should doclutch and
disengagc the gears by leaving the
lever midway between the speeds for
a moment. This again, gives time .ur
the gear shaft to .slow down. and the
gear should then be meshcd by a very
gentle, rather a feeling, movement of
the lever. To change down on all
tr.sa aVg In l.. .I... L.. /
about quarter and at the same time
the clutch should be withdrew. The
gear lever should then be brought to
the between gears position ard the
gear shaft Specdcd up by a momcn-
tary engagement of the clutch The
gear lever should then be put into ITS
notch and the clutch let in and the
throttle opened.
When climbing hills do not wait to
see how far you can go before shift
ing into low. but as soon as YOU
feel that the engine Is about to la
Dor, or the speed of the car has fallen
low shift to tho next lower speed,
taking care to shift quickly. so that
the engine viii not be allowed to
race" ana the car meanwhile lose its
momentum. The amount OF success
that the new driver Will have in gear
shifting depends upon practice and
skill.
How t. Use the Brakes.
Having learned something about
climbing a hill, there is also some
thing to learn about going down an
incline. If the hi, is only short
one the clutch may he dieengaged
and the engine allowed to run slowly.
If the hill is a long one the engine
may be stopped altogether. and, with
the clutch ont, tie car allowed to run
down by gravity; the quiet coasting
Will be found a welcome change. on
nearing the bottom OF Hill the
clutch should be gradually let in. so as
70 start up the engine again. If the
hill is very steep the car should he
kept we'll in hand from the very top.
The first speed should be put IN and
the ignition switched Oft: thGs the
engine will be cOnN orted into an air
pump or brake, which will serve as
sort OF an auxiliary brake
Both the foot and the hand brakes
should he tested soon after starting out
on a run. If the car shows a. DISPOSE
ton to get away down q hill the
clutch should be let in gently, with the
ignition switch off or the throttle
quite closed. This viii serve to limit
the speed of the car.
Broadly speaking, and in general
way, tllt W ittS Sll'uid Nv dpJ4ttu ti@o
little as possible. Sometimes ore secs
n car come dashing up to its dcstina-
tion and pull up in a few wards This
only shows that the driver has more
control over the machine than he has
over himself. Nothing is gained by
such action unless il is a bad rcputa-
ton and prematurely worn ont tires
As a general rule, do not operate
suddenly either the spark o. throttle
levers. The changes effected by these
means should always he made gradu-
ally. And, finally practice with your
car until the control if it becomes per-
iectly automatic. Until then YOU can
never trust yourself to do the right
thing in an emergency.
Changing the Spark.
In the matter of acceieration. 4 very
good rule is to speed the engine al
ways a trifle in advance of the load,
but never sufficiently TO allow it to
race. Thus, when a hill is to be taken
the acccleration will como before the
rise commences and will be gradually
increased to full power. when, if nee
essary, the change of gears will be
made before tho ear has dropped
much below normal speed. Similarly
there should always he a slight dc-
celebration just before the clutch is let
course, the retardaton should be ac-
complished simultaneously. The speed
and power may ne variously con-
trolled in one of three ways: by he
quality of the mixture, the thrOttling
of it, and by varying the time of igni-
ton Not to 20 into elementary de-
tails, it is sufficient to say that the
best method of regulation is by the
throttle, leaving the mixture constant
and the timing of the ignition prac-
ticaily so.
In some cases it is necessary to con-
troll almost wholly by the spark, but
this should not be done unless it is
Il bsolutelv necessary, since It involves
heating the engine when it is run COR
any length of time with late spark.
There are motors so contrived that
the ignition is actuated automactical-
ly, but this method involves complex
mechanism and is not of particular
when it cones to retarja-
tion. However for acceleration it can
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