South Bend news-times. (South Bend, Ind.) 1913-1938, 1919-06-22

OF "a storage battery Also Is there
any way 10 patch a broken battery
jsr that has a slight Leak 1 live
some distance from a service station
and would like 10 save time and
pense II possible. r. r..
The only satisfactory method is
10y charging. as removing this de-
post by chemicals or filing also
removes son e Of the active material
and 80 reduces the capacity of the
plates. A slow charge AT ABOUT one
quarter OF the charging rate contin-
ued for several days will sometimes
10 this II not all removed battery
should be discharged in usy and the
process repeated The charsing
rate Of a battery is oae-tenth It's ca
pacity. Thus a hundred ampcre
hour battery should be charged
normally at a rate Of 10 amperes.
FOR s%ulphation II should be charged
at two TO two and a half anperes
per hour. There Is no way 10 re-
pair a cracked battery jar. II must
be replaced by q new one.
-fA0N1A 1EffAA NAAAE'ANHA(DE1 n AaA
compression engine give more power
than a low compression engine OF
the same piston displacement If j.
does. why do not all engines have
high compression, or Is there a prac-
teal limit? II. T.
As the explosion pressure is in
direct proportion 10 the compression
pressure II follows that more power
is obtained by higher compression.
II has been found hat such engines
are more given 10 pre-ignitjon. over
heat more readily and wear out the
bearings more rapidly. Zach manu-
facturer gives his engine as high
compression as ne deems necessary.
and obtains more power by greater
attention 10 cam and valve design.
arrangement Cf inlet and exhaust
parts and manifold. p~re-hedting the
mixture ana choice of a good carbu-
rotor.
Motor Department:-Can you give
me a little information as 10 why
my engine misses at high speed? IL
Will run fine as long as do not run
over 20 miles per hour. 1t also
misses on the hills and will not hit
on all cylinders when running idle.
II hits them all as soon as l start,
and as long as / keep under % miles
per hour. but if L go over that speed
il misses fierce. +. s.
This may be due 70 any n Of a
large number OF causes II it oc-
ours at high engine speed it is most
likely due TO improper action of the
interrupter, which may require ad-
tustment. If the missing occurs at
low engine speed il may be caused
by air leaks in the inlet manifold or
improper c~arburetOr adjustment. V
type engines frequently miss when
idlinC. as they are thrOttled down
10 a point where some cylinders do
not get enough mixture To explode.
II it misses when pulling a lOa h
carburetor may need attention.
Motor Experimentation a n
tell IL the magnets ~ a Ford mag
neto are strong enough? 1 have
been having trouble with my igni-
ton lately and think the MAGNETS
are weak. / have removed them and
find them still able 10 attract each
other and pick up pieces of iron, but
do not know how much weight they
should lift. ). +.
II magnets have been removed
test them with a one-pound weight.
They should be able 10 lift and hold
twice their weight. or one pound.
\ better way is 10 run engine at a
fair peed. about 1000 revolutions
per minute. and test them with a
voltmeter. They should develop not
less than Is volts. ANY electrician
will do this for you.
Motor Department:-Wil wood
alcohol and gas mix together 10 use
in auto or will the alcohol hurt the
motor? VIII il give more pep 10
the eas2 C. w.
Alcohol and gasoline viii mix, but
vyill not improve the operation Of
your engine without radical changes
in the carburetor. Alcohol does not
and so would make It
harder 10 start IL requires extra
heat 10 evapOrate as rapidly as re-
ouired on an engine, and so would
cut down the power OF the eNplo-
sions unless special NEAR we're pro-
vided 10 heat the incoming air. II
Won wish TO use alcohol alone, II
would be advisable 10 install some
one OF the all fuel carburetors now
on the market
Motor Department.-Has any in
ventor vet made a success OF an en-
CINE with two ptstons in the same
7 do not NEAR anything
ike the double actins piston Of a
steam engine. but VI pistons. one
~ each end Of "A common cylinder
connected 20 the same shaft by bell
cranks or gears. As this design has
two pistons working from the same
e-Ynlosion. would IL rot develop
so,,h1e the power? d. G.
such engines have been built and
onerated. but this design was 10 re
duce vibration and not TO double the
mower. with present tyre engines
tae cylinder head is stationary and
tbs cylinder moves away from IT,.
Nyith double piston arrangement II
would be the same as II the cNlin-
DIR head were 20 move away from