The Brookings register. [volume] (Brookings, Brookings County, S.D.) 1903-1971, 1915-07-15

by using ether in gasoline and in what
proportion is il used to gain the best
of results?
The use of ether In fuel will give a
slight increase in power, due to the
more rapid propagation Of the flame.
One-half pint Of ether for each ten
gallons of gasoline Is used for this pur-
pose, but 1t Is not recommended, as 1t
Is not economical. For getting easier
starting a mixture of one-half CONNER
cial ether and one-half gasoline Is car
ried in an oil can. This can be squirt
ed into each printing cup for the ini-
tial explosions. The can must have a
cover on the spout
How will incorrect wiring affect my
motor?
The effect of incorrect wiring on the
motor depends On how the wires are
misplaced. For instance, II the high
tension cables were changed around sc
that no one Of them went to the right
plug 1t would be impossible to run the
motor, although an occasional explo-
sion might be obtained. II two or
three Of the high tension wires were
interchanged, but one or more were
left on the correct plugs, then the mo-
tor would run on the cylinders In
which the latter were. Where a dual
system Is employed the wires Of the
battery system may sometimes be mis-
placed without interfering with the OPP
Grafton Of the magnetic and vice versa.
AS a rule, however, the changing Of
the wires will result in the whole igni-
ton system becoming imperative.
Has a long stroke motor n advan-
taees ove~ q short stroke motor?
Yes. The gas after ignition has
greater chance to give up its energy
to the piston. A greater volume Of gas
may be gotten into the cylinder without
increasing the bore. This means more
power for the same piston speed.
How can take up the end play in a
crank shaft without putting in new
b%sarings7
It Is best to replace the bearings
when end play develops, but II this is
not desirable the play can be removed
by moving the thrust bearing to one
side enough to compensate for the
wear. The thrust Is taken by the CEN
ter main bearing, which Is easily dis
tinguished by having large fianges ON
each side. Remove the bolts holding
the bearing to the crank case and file
out the bolt holes enough to permit the
bearing to be shifted. Then replace
the bearing and tighten the bolts care
fully.
How will running with retarded spark
make the water boil in the radiator7
Operating a motor with retarded
spark will cause ~overheating by retard-
ing and prolonging the combustion of
the charge throughout the power Of ex
pansion stroke. Thus the cylinder
walls are exposed to the action Of the
burning gases during the whole Of the
stroke instead Of only during the time
the piston Is In the region Of upper
dead center, as Is the case when the
spark Is properly set. II the spark is
advanced to the point Of most efficient
operation the spark will occur some
time before dead center and maximum
pressure will be reached and the com
bustion nearly completed just after
dead center has been passed. During
this time, since the piston Is near the
top Of the stroke, the amount Of sur
face exposed to the exhaust gases Is q
minimum, and, furthermore, at thi:
point in the stroke the compression Is
at it's height, and combustion takes
place with greatest rapidity. Contrast
these conditions with what happens
when the spark II greatly retarded
Let us SUI that ignition occurs
when the piston has half completed its
stroke. At this point the compression
is lower, and combustion Is therefore
slower and will probably not be com
pleted until after the exhaust valv,
opens. The hot gases are in contact
with nearly the whole of the cylinder
wall surface for practically one-halt
revolution.
But this Is not all. When the sparl
is retarded, as In the instance JUS
mentioned, the motor does not develop
full power, therefore for a given LOAD
on the motor the throttle must b,
opened wider and more gasoline and
air must be supplied. The extra hea1
generated by the combustion Of thu
increased amount Of fuel thus adds it,
share to the already overheated motor
Ny car 10 equipped with electric
lights and would like to know IL dr.,
batteries would work the head and tai
lights. II 20, how many and about
how many hours would they last?
DRY batteries are not suited for light
ing the head and tail lights. This
method would be entirely too expen
sive, as the number of batteries you
would require would be great and theil
life short. Take your storage battery
to a battery repair man that you arr
certain is an expert-if possible take }
to a service station maintained by the
maker of your battery-and have It ex
amined. It may be that all It needs Il
A.