Aberdeen herald. [volume] (Aberdeen, Chehalis County, W.T.) 1886-1917, 1916-08-03

and No. q cylinders, and ] am unable to
remedy this. The plugs are oil right
and the compression good. have put
new platinum points in The magnetic
breaker, have cleaned the carbon from
the cylinders, adjusted and rsadjustsd
the spark plug points. Have tried new
plues, changed them from and 70
I and 4; have adjusted the earburstor,
but still numbers and miss. Some.
times they miss, and then again they
do not. This occurs at both low and
high speeds, with and without load.
| Can you tell me what the trouble can
b in this eass3
The circuit breaker cam in the mag.
neto is probably worn 20 that the cir
cults are not broken on cylinders Nos.
/ and or the distributor gaps for
these cylinders might be too wide.
Leaky valves or manifold connections
might also account for the missing
cylinders.
What are The requirements Of first
class spark plug, porcelain or stone?
That the insulation does not leak,
that the shell is not cracked by tight
ening the spark plug nut and that the
plug does not foul or the points rapidly
burn away.
Can you tell mo the correct method Of
setting or putting on q magnetic, also
a. regards the brakes in order to get
the best results whom valves and 9TH
Or conditions are all right7
1t is common practice to set the
breaker box so that when No. 1 cylin.
der passes the point of dead center
that is, at the top Of the piston stroke
the points for No. cylinder will
break, this with the spark lever at full
retard.
Approximately how much and what
size Of fine wire would b used in max.
ing . eut-out relay TO work on . elk
volt ssnsrator7
The amount Of wire and size will
vary with the design Of the cut.out,
but it will approximate In general the
ordinary bell buzzer winding designed
!! for that voltage.
Satt yV0 k0tb U0 uOw W utt0 tUO
horsepower Of automobiIes7
Multiply the bore Of the motor by It.
self. then by the number Of cylinders
and divide by ~.
What 10 the relation Of valve diane.
ter and width Of valve seat TO valve
spring pressure?
The relation between valve diameter
and valve spring tension Is simply en-
pirical. There is no definite rule which
designers follow in this respect. In
general 1t may be said that the speed
Of the motor affects the stiffness Of the
spring more than the points you men
ton, as at high speeds 1t is necessary
to have a spring which will close the
valve sufficiently rapidly to prevent the
cam from running away from the fol-
lower. 1t must be remembered that
the spring acts with the gas pressure
against the cam action, 50 that In lift
ing the valve the cam must lift the
load of the spring plus the load due
to the area Of the valve upon which
the pressure Is acting. In closing the
gas pressure Is immaterial, as at that
time 1t has generally reached close to
atmospheric.
| At times when I turn on the lights
Of my car the engine stops. ! have OK.
amined all the wiring and can find
nothing loose or dirty or short eircuitsd
| I had . vacuum gasoline system put
on the car and thought perhaps when
the engine stopped Il was not feeding
properly, but on examination found
plenty Of gasoline. What do you thinI,
10 the cause Of this and how can
remedy it7
This trouble may either be caused
by poor connection on the ignition
system or by swinging ground some
where on the circuit that causes the
circuit breaker to trip. 1t is suggested
that you inspect the system and see II
the lights 60 out when the ignition
stops. You can test this by trying II
on the battery ignition with the lights
on. 1t is possible that there might be
a broken valve spring In the valve lead
Ing to the intake manifold on the VA
cuum system. II this valve spring
were broken, occasionally a supply Of
raw gas would be drawn directly into
the intake manifold. This would kill
the motor. although the gasoline sup.
ply in the carburetor would not be se-
riously affected by the broken spring
How 10 che power divided on the rear
wheels Of an automobile going around
turns at right anelss? 10 the power
equal on both wheels Or 10 there more
on one wheel than on the othsr3
In turning a curve at right angles the
power Is exerted by the outside wheel
while the inside wheel simply acts as
q pivot point.
I have 50 BY 4 tires on the rear
wheels Of my car and 90 by 3La on The
front wheels. Does Il take away any
power when one has oversize tires on
rear2 Please explain If Il does, and
how much.
The difference would be so slight as
to be almost negligible. The only thing
the oversize tires do Is to raise the ra
ito slightly between speed of engine
and wheels-that Is. it would take
slightly less number Of revolutions Of
the crank shaft to travel q given dis.
lance where you use tires Of larger
diamof0r