Arizona republican., 1922-04-02
TRUCK KOWNERS
ANXIO Us I D
SAVE on TIRES

That owners OF trucks attach great
Importance to the need for economy
in their tire bills finds ample proof
in the eagerness with which they
have ayaiied themselves of the op-
portunity to get the scientific advice
on their tire problems made avail
able through the offer of the United
States Tire company to place the SER
vices Of the experts of its technical
service department at the disposal OF
any truck owner with special prob
lem.
Fleet owners In every state of the
union and in many foreign countries
have already applied to the Techni-
cal service department for as
sistance. In order that the prob
Aem may be fully set forth for con-
sideration by the tire engineers,
form of QUESTIONABLE has been pre-
pared Many large corporations have
sent in questionaires covering every
one OF their trucks to make sure that
each truck has its proper tire equip
ment. One noteworthy feature of the
service given by the department IS
that it is at the disposal of all truck
owners, no matter what make of tires
they use.
The problems submitted show
widely VARYING causes of trouble.
Here are some typical questions and
| answers:
Query from a Texas truck owner
The toe-in prescribed on my truck is
one-uuarter of an inch. Two tires
| have been worn out on the left wheel
! although the alignment has been
| carefully watched. The right wheel
| has given good service.
| | Reply-It is well to distinguish
| between toe-in and Gambler (pltch)
and dish of wheels. Gambler is the
pitch given TO the wheel by arching
! the axle or inclining the steering
| knuckIe from the vertical, whereas
| dish means that the spokes are set
| on an angle with the plane perpen-
dicular to the axis OF the wheel very
| often users and dealers OF automoplle
| and trucks confuse toe-in with cam
Der or pitch and with dish.
! 1t is difficult to measure the toe
in of front wheels by the straight
| stick method except on Ford cars be-
cause of interference of the motor
and transmission parts. Measure
ments should be made at the same
| distance from the ground in front
in the rear. even if this distance is
| not on the level with the axle. An
adjustable aligner when available ls
better than the straight suck
method.
If a car has been in service for
some time it is very probable that
the alignment which was Il when
the car was new viii be from 4 y
a." after a. certain amount of service
This tolerance is permitted by man
ufacturers and they would not con-
slider their wheels out of alignment
If the difference in measurements
front and rear is ss
Where the effect OF possible mis-
alignment is on one tire only the
chances are that this may be due K
certain irregularities not caused pS
toe-in. Such irregularities that cause
wheels to Wobble and tires to weal
unduly may be detected by jacklns
, ND the wheel and shaking it TO se'
| If there is any play or looseness
Then spin the wheel while holding
, pencil rigidly with the point clos
to the side ring of the rim and II tn
, distance varies between the penci
! noint and the rim, the wheel is no
) running true. In addition. the aXl
, or spindle may be bent or the de
q nountable rim may be incorrect,
, | applied or the hub may have Wo1
! or broken bearings.
From a consolidated school distric
, in the Rocky Mountain district
) number Of school districts have bee
+ consolidated in this section and pu
E pills are now transported by moto
4 bus to one central school. We ar
: anxious to keep scientific records 6
$ the cost of operation and would b
0 glad to have you furnish US With fu
e information on the subject
RepY-The general question
d truck operation is a broad one an
G since we do not know what phase
It you particularly desire informatio
: on. we are listing all of the item
which we consider important in con