The Brookings register. [volume] (Brookings, Brookings County, S.D.) 1903-1971, 1915-06-24

operation or the magnetic ana vice
versa. As a rule, however, the chang
Ing Of the wires will result In the
whole ignition system becoming mop
erative.
Docs an engine deliver moro or less
mission and chain drive than through
tho ordinary bevel sears2
The efficiencies OF the sliding gear
set with the shaft drive and the fric-
ton transmission with chain drive are
approximately equal on the higher
gear ratios, but when the friction
wheel Is brought near the center OF
the disk the slippage Of the inside
edge of the wheel, due to the small
circle 1t Is travelling on, causes a pow
err loss that Is greater than when the
low gear of the sliding gear set Is en-
gagged.
Assuming that an automobile stands
In a garage 80 per cent out of each
twenty-four hours, what would be the
saving in casing expense providing the
car was put on jacks and kept off the
tires during the time il was not in use?
The amount Of money you might
save by lacking up the wheels when
the car Is not In use Is too small to be
measured, providing there Is no oil or
water on the garage floor that might
cause the rubber to deteriorate. The
reduction In pressure and consequent
ln.unnnJ utvnI, an fhn nnCinUQ yhnn
this Is done Is almost lntinitesimal, al
though 1t Is popularity supposed that
relieving the tires from the burden OF
supporting the car must necessarily
relieve them from just that much
strain and that therefore they will
wear longer IL the car Is lacked up.
The reduction In pressure when this Is
done Is exactly inversely proportional
to the increase In volume OF the tube.
When the tire is supporting the car
weight It fattens slightly and n
might say, imperceptibly, II the tires
are pumped up as hard as they should
be. The flattening OF the tire causes a
small decrease in the volume Of the air
In the tube and therefore when the tire
Is raised off the ground 1t regains Its
normal shape and normal volume. 1t
is obvious that this small change In
volume will not affect the pressure to
any extent. since the decrease In pres
sure is inversely proportional to the In
crease I'm volume. And since the de-
crease In pressure Is almost rncom-
measurable the lessened strain and
consequent saving In tire cost Is meal
culable.
10 there any good preparation for pol
Ishing tho body Of an automobile which
will not harm the varnish Or paintf
1t Ii not advisable to use polish Of
any sort on the body. II the finish has
become dull have the body r~evarnished.
The only r%ejuvenator worthy Of ION
sideration Is soap and water. and some
body makers condemn the soap, advis-
ing the use Of water only. However.
there is little harm In using lukewarm
water and soap. provided the soap Is
not too strong. In cleaning the body
flrst wash the dust or with a hose and
do not apply a sponge or cloth until
the dust has been removed and the
mud softened. Then sponge the body
with soap and water and finally rinse
with q hose until the soapy water has
been entirely removed. Then wipe dry
with chamois. IL this advice Is fol-
lowed there will be no need Of using
any body polish. al the varnish will
hold its luster almost indefinitely.
The brake on my car has been drag.
cling for soms time. viii this cause
the tire 60 wear more rapidiyf
Inasmuch as the dragging brake re-
tards the free movement Of the wheel,
the tire Il made to wear out more
quickly than normally. Especially 10
this 90 when the brake IL applied. The
principal detriment. however. lies In
the increased work imposed on the mo-
tor. which causes It to heat quickly.
Our oar has q unit power plant 10.
inn one 0rade Of oil for crank case,
multiple disk clutch and gear set. The
eilins system 10 circulating splash with
pump. Can we use graphite in cur
power piantf u %, how much era.
phits 70 the gallon % cylinder oil. and
what makef
Use one teaspoonful Of 6aks graphite
to each quart Of OIL Do not throw
the graphite In loose. but mix Il into
Z soft paste nrst and then add Il to the
OIL In buying the graphite be careful
10 obtain . good motor graphite -
some Graphites are not suited for motor
fabrication. Some are too coarse
oeheFD 10 0ne and some contain Grit
Thersf0es. b certain yoa ebtaip Z soed