El Paso herald. (El Paso, Tex.) 1901-1931, 1920-09-18


How can magnetic armature be
{ tested2
why IS the lywheel Of a four
] cylinder engine required 10 do more
[ work in the motors operation. and
| IS usually heavier than that o. engines
I which have six or more cylinders2
3-How many cam shafts does the
Z eight and twelve cylinder V type
engine have2 How many cans are
required to a shaft7
what IS the condenser OF an IN
I duction coil or magnetic armaturs7
what is good rust preventive
Z to apply 70 a motor exterior
6-Near which valve should the
/ spark plug be located in the cylinder
! Why is It placed ia this direction2
What IS the automatic spark
| control2 How IS It operated7
Slow many feet per minute would
/ a piston OF an engine travel which
/ Is operating at the rate Of 500 rsvo-
lutions per minute and has a stroke
I Of four inches2 How e. this figured ?
9-What is a way 20 remove a tight
3 fitting stud without damaging the
] threads2
I 10-What IS a good way to find q
: leak in radiator2
+ Answers to Last Weeks Questions
Ito test the secondary winding OF
an Induction coil connect a volt meter
and six volt storage battery 10 the
/ secondary terminals The Voltmeter
should be connected IN series, that Is.
I break the wire leading from battery
7 to coil and attach each terminal OF
{ the Voltmeter 70 an end OF the wire
2 that Is broken. II the current VII
not flow from the battery the wind-
Ing IS open n the winding IS IN good
condition the volunteer viii show a
reading OF half the storage battery
voltage
I'm turning a car IN a very mar
row street, the advantage IS to turn
the front wheels as sharply 70 the
SIDE as possible. II the turn cannot
I be accomplished IN one operation OF
The steering wheel, do not 90 forward
TO the curb with wheels hard to one
side side. but stralEhten them and
turn them IS FAR as possible IN the
I opposite direction while the car IS
Still In forward motion while a few
rect from the curb. Back the car
when &c has reached the curb. mean
While completing the opposite turn
Of the wheel Before the rear wheels
Z reach the other curb IN the second
operation again turn the steering
wheel 20 its first turning position and
move the car forward. This should
be sufficient manipulation to bring
{ the car IN the direction IN which yOu
wish 70 travel. The forward and
backward motions are similar 20
those employed IN a garage whea It
Is necessary 10 move car = short
distance TO the left or right OF where
IL STANDS, and the success OF the
operation depends on proper handling
OF the steering wheel
IA gasoline engine must first be
cranked 10 produce continuous div
Ing power because gas must be drawn
into the combustion chambers OF each
cylinder; compressed by the pistons
and ignlted by sparks at the plugs
Delore II WIZ expand and give driV-
Ing power at the pistons. When
crankiug begins, and when the engine
begins operating under its own power
the action Of drawing IN gas. COM
pressing IL, igniting 10 and forcing out
the burned gases continues auto
matioally.
ITO insure low resistance to flow
OF electricity through Joined wires or
wire permanently attached 20 a
terminal always solder such connec-
tons then tape them Soldering viii
prevent ccrroslon from adding re-
sistance 20 the current. and viii
greatly strengthen the connection
5.-Commutators OF starting motors
and generators should be cleaned once ]
OF twice q season TO insure best re-
suits Loosen NJ the dirt OF gum on
the surface Of the commutator with I
kerosene. applied carefully with a
cloth Lift the brushes while this IS
done 80 that none OF the liquid win
touch them When the gummed sur I
face IS loosened wipe commutator I
with clean cloth. To maintain the I
space between seEments OF the COM I
mutator groove out the mica insula- I
tion between segmeuts. start the l
groove first with a three cornered /
file, then finish undertaking with q /
hacksaW blade. The mica should be ]
= ~ HsI~Ma
face OF the commutator. To smooth I
the commutator use very fine sand /
paper. Lift the brushes and wrap
the sancpaper around commutator 50 I
that both ends OF paper viii touch I
and work back and forth until brirht. ]
Polish with cheosecloth-
6-Sparkplug electrodes. mainly the I
center point. are made Of nickel alloy. /
Most OF other metals would expand ]
under great heat In the cylinder head I
and crack the porcelain Insulation OF I
the plug.
ITO adjust a carburetor for high I
speed work cut down the mixture /
until L Is 50 lean that the motor viii /
miss on low speed when running f.
idle. Then adding just q little more /
gas 70 the mixture Test the adjust
ment on high speeds, quick accelera- I
tion and hill climbing. A weaker 4
mixture can be used for speed than /
for heavy OF slow work.
s-The more technically correct l
name for the automobile power plant /
e the word engine, although s. IS I
popularity called a motor.
9-Cyllnder lap IN engine operation /
is a name applied 20 the distance I
two pistons travel together on power |
stroke II means the tapping OF power I
strokes or explosions. In a four
cylinder engine there IS an explosion !
TO every half revolution OF the crank !
shaft, one power stroke beginning as /
another finishes, therefore there IS no /
tapping Of strokes. In the six cylinder /
engine the second power stroke be- ]
gins before the first ends, a distance
OF Is degrees on the flywheel. there
fore there Is "a degrees lap. In the
eight there 81 "a degree lap and in
the u three cylinders working to-
gether on power stroke form e lap OF
IA degrees
"a good tire preservative IS
liquid rubber paint made from un-
3 vulcauiZed rubber. Applied with a
! brush. &c viii preserve the tires By