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The breath taking speed of
the past is just wrong.

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Today faster trucks and motor
cars speed up the work

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and play of the world.

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Follows with greatest friction

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and yet range of the limited
to our ability to stop

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and stopping depends upon what the paradox
do away with friction for motor speed

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and yet for more friction
whether you travel on a bicycle

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wagon or the fastest plane or car

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and your Depends upon which
you apply for stopping in

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modern busy traffic on congested
cities on the crowded highway

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safety of women

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and children breaks for example dependable

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brakes.

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Manufactured by the Motor
Company Chevrolet wheel

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and brake smoothly the wheel comes to a
stop with the slightest pressure on the

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pedal and how quickly the wheel stops

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when the pressure is applied before
we can appreciate the degree.

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Generally reached in its brakes.

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We must understand what it's habits are

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and what must be done to
take full advantage of it.

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This is a motor car we.

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And to this wheel is fastened a brake
drum the pluck to which friction will be

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applied for stopping since friction produces
heat the material used for applying

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friction must resist the if it doesn't
it will smoke charred burned.

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And quickly where I'll
never lay with every

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available brick material to choose from
through exhaustive test selected the very

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best for Chevrolet brakes brought regardless
of the quality of the material the way

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this material is used is more important.

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For example the amount of braking material
in contact with the brake drum largely

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determines how long the material will
last and how effective and safe.

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The brakes are look at this
this motor car wheel a spinning

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and the brake drum turning
with a short break.

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You covered with brake material
will be used to stop this wheel.

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Now want to see how hot the brakes
you get and how quickly the brake

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but to release ground away the brakes you
would lengthen the brakes you doesn't get

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so hot and the break
material lasts longer.

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I still longer breaks you
less heating less wear

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and no Almost half of the drum is

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covered with friction
producing brake material

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and the wheel is brought to a
stop with very little heat

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or wear it is a simple matter to
see that the sect of this of brick

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and their durable at the depend to a
large extent upon the amount of breaking

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material in contact with
the revolving brake drum

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and the amount of reading material.

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In contact with the brake drum
not only depends upon the length

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and number of the shoes
but upon the diameter

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and the width of the brake drum imagine
a Chevrolet brake without articulated

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brakes you break which all outward appearances
upright is plenty of brake material

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to the brake drum. But notice

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that the ends of the brake shoes are
fastened to fixed pivot watch as

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they move about the six point

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that the end of the moves farther than
the part near the pivot as long as the

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surface of the break
forms a perfect circle.

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And as long as the pivot is located
in exactly the right place.

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Then the break material will
contact the brake drum.

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But you can't use the brakes without
making he changes the shape

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of the brakes you see the issue doesn't fit
the drum any more the rigid pivot won't

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let it. So only part of the brake material
contacts the brake drum and the part

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that does wears down first.

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When the brakes you pools off then here's
what you get not only the ends of the

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brake shoes touch the drum

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and only parts of the braking material
are in contact with the drum.

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This is a Chevrolet wheel and it's large
brake drum twelve inches in diameter.

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These are several a brake shoes.

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Notice how long they are how much of the
inside surface of the brake drum they

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cover but even more important.

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Notice how they are supported instead of a
single pivot for each you use wings on a

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link with two pivot the
notice to move as it wants to

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and should within the
circle of the brake drum.

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There is nothing to prevent the tube
from exactly fitting the brake.

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Whether it's not or cold.

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No notice

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that this simple little piece as it
turns spread the hues apart at the

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break operates every square inch of breaking
material the break every square inch

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of breaking material where. The same.

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This is one of the reasons why Chevrolet
brakes work so easily so effectively

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and they stay in adjustment over thousands

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and thousands of miles hardest driving
through the heaviest traffic through any

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kind of weather regarding how well a brake
is designed it's moving parts must be

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protected from water
much mud dirt and dust

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and grit.

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This is why I roll a protect the interior
of its brakes with close fitting

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and in addition the bearing parts against
rust by pleading them with cadmium

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with the inventive resources of
experienced engineers in General Motors

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laboratories

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and the Chevrolet engineering department
Chevrolet has its choice of every

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available need for connecting
brake pedals with brake.

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After all why should there be a problem
connecting for mechanical brakes with

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foot operated. Simplicity is
always the thing to be solved.

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Where safety is at stake.

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So Chevrolet with steel rod

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and cables through a
strong sturdy cross shaft

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and connected for mechanical brakes
mechanically with the foot operated.

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What could be simple. What could be saved.

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Three hundred standing on a Chevrolet brake
pedal could not even spring a single

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part in the entire brake system
and the reason is simple.

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The same freight elevator for operating.

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For supporting suspension bridges.

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Here is an entire Chevrolet car.

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Brake control Chevrolets brake rod.

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Power

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and the cross is many times
stronger than required.

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Is it any wonder

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that Chevrolet without any thought of
brakes the heaviest of traffic doesn't faze

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them for they know from experience

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that their cable control
brakes are job every instant.

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Ready for any emergency that the slightest
push on the foot pedal. Brakes.

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That's just.

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And all of the.

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General knowledge of friction.

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Yet.