The Oskaloosa herald., 1916-05-04

TO start q car fn first speed, thsn pro-
gress to internaSdiate, and s1eS in
few moments 90 into high. But 70
Gently in studying book on auto1s6.
biISs | find that II says that with . So
ieetive type of gear box il u not nee.
essary In changing from low 20 high
to pass through intermediate speed.
Does this mean that one may start q
car in any desired speed without N.
jury to the engine and gears, providinv
the proper care 10 Used in allowing tina
clutch TO alp into enaAuement7
No doubt what the author meant TO
make clear is that while II IS advisable
In shifting gears TO 60 progressively
from one to the next II IS not feces.
sary to do so. For instance, II a car
was in the lowest speed with a selec-
tire gear set the step to the highest
speed could be made without ever hav-
ing the intermediate gear In mesh.
With the progressive gear, as the name
suggests, the gears are moved through
the intermediate when going from low
to high. With either type OF gear set,
however the acceleration OF the car
should proceed smoothly from the time
Of starting until the high gear il in
mesh. It is not proper after driving 70
jump intermediate speeds unless under
extraordinary circumstances. One set
of conditions wherein It would be pos.
sible ana perfectly proper 10 go from
low speed Into high Is in descending b
steep grade. On a very steep grade
one can start directly In high gear
without doing any harm, ,'. ID" ..tzc
What 10 the difference between q low
and high tension Ftnaaneto7 " 4@,.
The difference between the Tow and
high tension mfgnet6s n that In the
low tension there rs only d primary
winding where low tension current ID
generated. while In the high tension
magnetic there Is MISC Included sec
ondary coil in which high tension
current is induced. due to the inter.
ruption OF the primary circuit 49, -
q 49, - go
Should all starter and motor arrnA-
lures have an air space around them
and not touch az The ArfKature N the
magnetic? ~ ''''.}. ''' = ... '',"f>'
Magnetic armatures do not touch any
thing. Neither do those Of motors or
generators. They could not operate II
they did
How cloes tho low tension type OF
magnetic differ from thS high tension
type, and which on6 is the Best type 10
use? ''.-. >s'2.% f..,~'
The high tension magnetic differs
from the low tension In that II carries
It's transformer coil in a unit. whereas
the low tension has the transformer
coil separate Where magnetos are EN-,
p1oyed for automobile ignition either
the high tension or low tension viii
give perfect satisfaction. although the
high tension is more COMPACT. '
The two front cylinders IN my car
will run for days, and weeks without
causing any trouble and then, without
apparent cause, will cease firing, tho
cylinders food with gasoline and the
motor. will heat up, On; these coca
sions the pIuss give good sparks every
revolution. What do you think 10 the
trouble, its cause and rentedy7 %i"
The trouble with your two front cyl
inders seems to be sticking valves.
The fact that you state that the motor
overheats at the time would lead, TO
the belief that this is cause and not
an effect. Probably the motor starts
to become overheated. causing the
valves to stick, which in turn gives
rise to misflre You should look care
fully to see that the valve stems have
proper clearance, that they are not
bent and that the cooling system is
clean and in good order The latter
can be aided by flushing out with a
saturated solution Of common soda.
Would there be any advantage IN set-
ting the timing gear on the rnayn0to
shaft one tooth or two teeth ahead7
Would il take up the wear or play
oaused by two years Of runring7
The advancing OF the magneto gear
one or two teeth would not take up
back lash caused by wear, but would
compensate for lag In the electrical
system at high speeds. d,
Can you tell me- the proper clearance
between the valve stem and valve steFn
guides on T-hsad motor ard whether
or not the clearance on the exhaust
and intake side should be the sarie7
The amount Of clearance between
your valve stems and valve guides win
depend upon how efiicaeious the cool.
ing. system Is, a. car which Is amply
cooled requires less clearance in parts
likely TO expand than one which Is IN
adequately cooled. A ciearance OF
0.0o4 inch WIN not be too much where
the parts are subjected to high tenn
pefatures. 1t might be best 10 try b
clearance Of o002 inch and gfaddaiiy
enlarge II II necessary BY tapping b
the valve stems. Is
What 10 the eaass d s arsBBlaa
eiuteh7 ~ y go
The grabbing clutch Is due TO hsutl-
rient play IA the clutch leather expand
ers, which bring the leather out AGAINST