The Brookings register. [volume] (Brookings, Brookings County, S.D.) 1903-1971, 1915-12-16
What is the difference between semi
three quarter and floating axles?

three quarter and floating axles2
Ordinary motorcar nomenclature gives
us three types Of live rear aXles, called
respectively floating, th~ree-quarter float
ing and ~semifloating.
The floating axle, as the name I'm,
plies, Is one that foats-that is, It turns
around, but 1t does not carry any
weight. 1t is used to gain rotary mo,
ton only. The s~emiloating axle, how.
ever, not only turns the wheels, but
takes some Of the weight OF the car.
The difference between these two types
of axles IS in the position Of the wheel
bearings. In the floating axle the
wheel bearings are outside of the
housing. The rear wheels of the car
rest upon these bearings. 1t can be
seen plainly that If the wheels rest
upon the bearings and the bearings
upon the housing the housing must sup
port the weight of the car.
The end of the axle shaft has some
form Of jaw clutch which fits into de-
pressions In the wheel hub. In the float
Ing axle this connection between axle
shaft and wheel is flexible, but in the
three-quarter floating type the end of
the shaft is permanently attached to
the wheel, being held usually by bolts.
In the s~emi6oating type OF rear axle
the inside bearing occupies the same
position as previously, but the bearing
for the wheel, instead Of being outside
the housing, is inside. In other words.
each axle shaft rests upon two bear
l-~ 80, ~ a,.I.A-I "a a. .I-HA NJ
wheel is placed on the axle and held
there by a key. Sometimes the ends
of the axle shafts are square and the
inside Of the wheel square, ST that no
key Is necessary. With the wheels on
the axle shafts, nuts are screwed on
the ends of the shafts to prevent the
wheel from backing off. The nuts are
locked with cotter pins.
What can we do to remedy the troy
BILE we are having with a two cylinder
carr The engine has about forty
pounds compression on front cylinder
and thirty-five pounds on rear. When
it Is running slowly it will fire regu-
Iarly, but when spark is advanced and
throttle opened il will hit irreeuIarIy.
Ignition seems good. We rave tried
new coils, timer, ETC.; also have bored
holes in intake manifold and put in
printing cups. If we open up cup on
rear cylinder and give mixture more
air it seems to run better.
The trouble apparently is with the
carburetion, and from the symptoms
you give it is probable that the trouble
Is due directly to a poor adjustment Of
the air valve. While the motor is
running and misfring open the air
valve a little at a time with a pencil,
and If the mlsfiring stops because Of
the additional air admitted, then reset
the air valves SO 1t will open sooner.
1t also would be a good plan to cut
down on the fuel supply slightly by
closing the needle valve a little. Do
this while the motor Is running and
misfrlng. Turn the valve slowly un-
til the misfiring stops. If It does not
stop then get it where 1t was before
and attend to the air valves.
Can you tell me the disadvantage OF
meteor wire contact points in a mag
neto as compared with platinum points?
Platinum usually is not used alone
for magnetic interrupters, there being a
percentage Of iridium added to give the
points greater resistance to hammer
action which they must withstand
when in use. Platinum-iridium is bet
ter than meteor wire for this purpose.
Meteor metal Is a steel alloy with great
resistance to heat and gives good re-
suits.
Why should my motor be SO hard to
turn over? The bearings are ioosened
up and the pet cocks opened, but ! am
still unable to turn it over.
In all probability the pistons are
tight, although the trouble may be
caused by a drag on the hywheel. If
the motor has been overhauled recent
ly the pistons may have been fitted i'm
properly.
What advantage has the high tension
magnetic ovsr the low tension, If any?
1t Is simpler, not requiring an out
side coil. This makes installation cas-
Ter and wiring easier to understand.
1t Is not 30 liable to get out of order,
because there are fewer parts. 1t
makes q cleaner installation because
Of the absence Of extra wiring, dash
coils, etc, and Is said to be more eff
Client because of the reduction Of lag
IN the whole system.
What spring 10 best, three quarter
elliptic or The eantilsvsr, for care n
der a,0o0 pounde?
The main advantage Of the cantilever
apring over the three-Quarter elliptic
y that it WIN give the same carrying
capacity with the proper nexibility and
with lee rebound- Another advantage
He IL IT. sl0w period Of vibration and
the ability q eliminate rebound to a
rreat extent The weight Of q CAN'T
lover y nearly Ill unsprung weight.
n the Disadvantages the principal
= that I sim frame = necessary
ou1. that Z rcll - oiYsn 70 the body
WnenNths CIR turns eoFners. The canti-
1ovox eogtn moco than the semiealiptic