The breath taking speed of the past is just wrong.
Today faster trucks and motor cars speed up the work
and play of the world.
Follows with greatest friction
and yet range of the limited to our ability to stop
and stopping depends upon what the paradox do away with friction for motor speed
and yet for more friction whether you travel on a bicycle
wagon or the fastest plane or car
and your Depends upon which you apply for stopping in
modern busy traffic on congested cities on the crowded highway
safety of women
and children breaks for example dependable
brakes.
Manufactured by the Motor Company Chevrolet wheel
and brake smoothly the wheel comes to a stop with the slightest pressure on the
pedal and how quickly the wheel stops
when the pressure is applied before we can appreciate the degree.
Generally reached in its brakes.
We must understand what it's habits are
and what must be done to take full advantage of it.
This is a motor car we.
And to this wheel is fastened a brake drum the pluck to which friction will be
applied for stopping since friction produces heat the material used for applying
friction must resist the if it doesn't it will smoke charred burned.
And quickly where I'll never lay with every
available brick material to choose from through exhaustive test selected the very
best for Chevrolet brakes brought regardless of the quality of the material the way
this material is used is more important.
For example the amount of braking material in contact with the brake drum largely
determines how long the material will last and how effective and safe.
The brakes are look at this this motor car wheel a spinning
and the brake drum turning with a short break.
You covered with brake material will be used to stop this wheel.
Now want to see how hot the brakes you get and how quickly the brake
but to release ground away the brakes you would lengthen the brakes you doesn't get
so hot and the break material lasts longer.
I still longer breaks you less heating less wear
and no Almost half of the drum is
covered with friction producing brake material
and the wheel is brought to a stop with very little heat
or wear it is a simple matter to see that the sect of this of brick
and their durable at the depend to a large extent upon the amount of breaking
material in contact with the revolving brake drum
and the amount of reading material.
In contact with the brake drum not only depends upon the length
and number of the shoes but upon the diameter
and the width of the brake drum imagine a Chevrolet brake without articulated
brakes you break which all outward appearances upright is plenty of brake material
to the brake drum. But notice
that the ends of the brake shoes are fastened to fixed pivot watch as
they move about the six point
that the end of the moves farther than the part near the pivot as long as the
surface of the break forms a perfect circle.
And as long as the pivot is located in exactly the right place.
Then the break material will contact the brake drum.
But you can't use the brakes without making he changes the shape
of the brakes you see the issue doesn't fit the drum any more the rigid pivot won't
let it. So only part of the brake material contacts the brake drum and the part
that does wears down first.
When the brakes you pools off then here's what you get not only the ends of the
brake shoes touch the drum
and only parts of the braking material are in contact with the drum.
This is a Chevrolet wheel and it's large brake drum twelve inches in diameter.
These are several a brake shoes.
Notice how long they are how much of the inside surface of the brake drum they
cover but even more important.
Notice how they are supported instead of a single pivot for each you use wings on a
link with two pivot the notice to move as it wants to
and should within the circle of the brake drum.
There is nothing to prevent the tube from exactly fitting the brake.
Whether it's not or cold.
No notice
that this simple little piece as it turns spread the hues apart at the
break operates every square inch of breaking material the break every square inch
of breaking material where. The same.
This is one of the reasons why Chevrolet brakes work so easily so effectively
and they stay in adjustment over thousands
and thousands of miles hardest driving through the heaviest traffic through any
kind of weather regarding how well a brake is designed it's moving parts must be
protected from water much mud dirt and dust
and grit.
This is why I roll a protect the interior of its brakes with close fitting
and in addition the bearing parts against rust by pleading them with cadmium
with the inventive resources of experienced engineers in General Motors
laboratories
and the Chevrolet engineering department Chevrolet has its choice of every
available need for connecting brake pedals with brake.
After all why should there be a problem connecting for mechanical brakes with
foot operated. Simplicity is always the thing to be solved.
Where safety is at stake.
So Chevrolet with steel rod
and cables through a strong sturdy cross shaft
and connected for mechanical brakes mechanically with the foot operated.
What could be simple. What could be saved.
Three hundred standing on a Chevrolet brake pedal could not even spring a single
part in the entire brake system and the reason is simple.
The same freight elevator for operating.
For supporting suspension bridges.
Here is an entire Chevrolet car.
Brake control Chevrolets brake rod.
Power
and the cross is many times stronger than required.
Is it any wonder
that Chevrolet without any thought of brakes the heaviest of traffic doesn't faze
them for they know from experience
that their cable control brakes are job every instant.
Ready for any emergency that the slightest push on the foot pedal. Brakes.
That's just.
And all of the.
General knowledge of friction.
Yet.