The Fargo forum and daily republican. [volume] (Fargo, N.D.) 1894-1957, 1913-12-13

case by the pressure and it is forced
with equai pressure against these
foreign substances. Frequently they
cut the tube before it is fully inflated,
And so, h first requisite is that the
inside of h casing be kept clean.
Besides the inside Of the casing, the
tube also comes into contact with the
rim between the beads Of the casing.
n rim accordingly, also should be
clean and smooth. The chief dam
age from rims, however, arises from
their tendency to rust Rust, aside
from making the rim rough, eats into
the tube. Perhaps the most effective
way to deal with this is to paint the
rim with graphite paint. Wherever
possible, this should be done. Flaps
to be placed between the rim and tube
offer protection from the rim and rust,
and are of advantage provided tho
user is careful not to pinch his tube
between the edges of the flap and the
bead of the casing, a condition dis
cussed a little further on.
Fol- the repair Of punctures and
bioW-outs, it Is necessary frequently
to remove the tube from the casing.
For this reason the tube should never
oe permitted to stick to the casing,
something it ordinarily has a tenden-
cy to do. This is obviated by the gen.
erous use of French tale.
Most motorists realize the damag-
ing effect of running a tire fiat after
a puncture. The casing is quickly
ruined beyond repair, but the tube is
even more easily ruined. Driving a
snort distance with tire fiat will grind
up the tube into pasty shreds. ..,..
We come now to the discussion CT
the cause of more tube trouble perhaps
than all other causes combined-I
plnchlng. Again and again, the motor
ISL has been surprised when driving
MS car carefully on the best of roads, |
to have an explosion announce al
blowout on one Of his tires. The cas-
ing has not been cut AMI bruised; it
Is In perfect condition. Still the tube, |
without apparent cause, has split for
the space of a foot n is worthless.
The cause is to be found in the
tlre's history a short time previously. |
The last time the tube was removed |
from the casing and then applied
again, a small part of it was caught
betWeen the rim and the bead. On be-
ing inflated, too much strain was CEN
tered. at this pinch. The Weakening
was gradual but the eventual blow
out certain. Sometimes the blowout
comes more quickly, at times while
the tire is being inflated. The tube
may also be pinched between the
spreader at the base Of the valve stem
and the stay bolts. Its effect is the
same as a pinch at the edge Of the
bead.
Because Of the manner in which
regular clincher castings are applied to |
their solid rims, pinching at the edge
OF the bead is more frequent in the
use of this type han any other. The
elastic bead must be stretched over
the side Of the rim with a tire iron
and care is necessary to prevent a
pinch. The tire iron itself, if. not
carefully used, is likely to damage the
tube. Later, the weakened spot an
nounces itself by a blowout.
A final ~precaution will pretty we'll
insure against disappointing tube
service, and that is this: protect YOUR
spare tubes. Usually the spare tubes
are folded n carried in the tool box.
Here they come in contact with greas-
es, oils, and tools which present sharp
edges. The tube will frequently be
shifted around during a search for
some needed trticle. In time this
shuffing around chafes and deeply
wears the folded edges. Often a tube
is practically worn out in a tool box
before it Is ever used. Tubes should
always be carried in bags Or in the
paste board boxes with which their
maker furnishes them.