Eagle River Democrat. [volume] (Eagle River, Vilas County, Wis.) 1893-1896, 1895-08-26

jure the bearing if you used a quart of
oil on it each day.
Any oil is very injurious to rubber,
and the principal danger from overdoses
of oil is that it may run down on the
tire. A machine which has been stand
ing through the winter wants cleaning.
If you are an expert and it will do you
any good to take the bearings apart,
do it, but it won't do the bearings any
good.
Take out the saddle rod and pour a
tablespoonful of the common. everyday
servant girls delight by dealers
called Kerosene oil, into the hole where
the rod was In nearly all machines
the opening through the saddlepost tube
communicates directly with the inside of
the crank shaft bearing, and hence the
kerosene will run directly on the shaft.
OF course, if your frame isn't built
that way, don't do it, but squirt the
filled the bearings with the deadly kerr
osene, spin the shaft until the oil which
runs out is no longer black Git may be
necessary to repeat the operation two or
three timesl, then wipe the parts thor
oughly, applying few drops of your reg
ular oil and the bearing will be all right.
Clean the bearings in the wheels the
same way, except that greater care must
be taken to avoid spelling the tire.
The safest way after drenching the
bearings and running them thoroughly
is to lay the machine on its side until
the kerosene has run out, which it will
do in a few minutes, though if you can
leave it in 4 reclining position over night
so much the better.
/ have known machines treated in
this way to give better service than 9TH
ers which were frequently taken apart.
New York Times.
The ability of bicycle rider in
rapid motion to do serious damage in
collision with another machine or with
a pedestrian is fully appreciated by few
A man weighing $50 pounds and moving
at the rate of ten feet a second (which
is only about seven miles an hour has
a momentum of 1900 pounds, leaving
out of the account the weight of the
wheel This is sufficient to upset any
pedestrian with terrific force. 1t has
been suggested that the pneumatic tire
forms sort of fender which would pre-
vent serious conclusion in case OF col
lision. 1t would undoubtedly have
slight modifying effect, but it would be
of little account A collision between
two wheels, each with a 15O-pound rider,
spinning at the moderate speed of seven
miles an hour, would result in a smash
I'D with a force of 5000 pounds. In view
cycle accidents are often very serious.
The tractive force. required to propel
a bicycle over a smooth level surface
is estimated at one-tenth of the load;
calling the load $50 pounds. force of
~ pounds would be required to move
the wheel forward, and this calls for
pressure on the pedals of 81 pounds on
the wheel geared in the usual manner.
When, however, the road is rough or on
an upgrade, the case is different. On
grade of 1 to 10, for example, the rider,
in addition to the tractive force, actually
lifts one-tenth of his weight and that of
the machine. With a rigid or semi
rigid tire the rider is obliged to exert suf-
ficient force to lift himself over every OBJ
struction encountered by the wheel; the
descent from the obstruction gives back
portion of the power expended in sur
mounting it, but not all of it. In the
case of the pneumatic tire, however, the
small distractions are not an opposing
element of any consequence, as the tire
yields. in lieu of the wheel being raised,
and the result is the wheel travels as
upon smooth track.