more on brakes

[adekunle]

Hi guys,

Pls guys, What exactly is the brake pad radial height, and how is it related to the rotor effective radius.
Here is a pic
www.main.experiencetherave.com/techinfo/auto/effective_rotor_radius.jpg

[MCoach]

Sorry about that mistake,it was a typing error, I meant if the radial height of the pad is the height of the friction material on the pad or the overall height of the pad or even something else. This is the only parameter hindering me from calculating the torque. Thanks

I will answer a question with a question.

What is the mathematical relationship between wheel or rotor torque and the height of the brake pad?
What if I moved the brake piston radially closer to the axis but left the brake pad in the same location?
What if I moved the pad closer, but left the piston in the same location?

[CWA]

Adekunle,

It is possible for all forum members to edit their posts. Can I suggest you remove the text from 3 of your posts, and summarise your question(s) to the forum members concisely in a single post. This will help people understand your issue and encourage them to attempt to address it. The way your issue is presented to us at the moment is very broken and difficult to comprehend.

Whilst doing this, can you clarify exactly which dimension you are asking for advice on. I suggest referring to a diagram when doing this, as the way you are describing the dimension of interest is not clear. If you are referring to pad thickness / height, I think referring to this dimension as 'radial' is misleading to the point of being incorrect, which may be why MCoach's response is not as useful to you as it could be.

[adekunle]

This is how far I can go with summarising the thread question, someone please help me out here with some answers to the thread question!!

[Jonny Rochester]

Long phrases such as "brake pad radial height" are only as descriptive or ambiguous as the reader understands those words. So if someone was to use "brake pad radial height" it would be most clear if they had a diagram also, just to be sure. It's not too scientific, it means whatever you want it to mean.

But we are probably talking about the average distance from the brake pad to the disc center, a general radius used for brake calculations. And it is the same dimension as the effective rotor radius.

[adekunle]

Long phrases such as "brake pad radial height" are only as descriptive or ambiguous as the reader understands those words. So if someone was to use "brake pad radial height" it would be most clear if they had a diagram also, just to be sure. It's not too scientific, it means whatever you want it to mean.

But we are probably talking about the average distance from the brake pad to the disc center, a general radius used for brake calculations. And it is the same dimension as the effective rotor radius.

There is a link in my first post for better clarity. Yes,that is what I am talking about,the distance between the brake pad to the disc center which can be known as the effective rotor radius.
Now what is the front pad radial height (I guess that is the confusing description).

[BillCobb]

The "effective" active radius of a brake pad is an easy problem to solve and has been on many 1st semester Integral Calculus tests and documented in Calculus books since the subject was introduced.

You may presume that the pad is a finite partial sector of the total rotor area.

Go figure.


Regards,

D. Theta.

[adekunle]

The "effective" active radius of a brake pad is an easy problem to solve and has been on many 1st semester Integral Calculus tests and documented in Calculus books since the subject was introduced.

You may presume that the pad is a finite partial sector of the total rotor area.

Go figure.


Regards,

D. Theta.

All right noted I will work with that. Thanks

[Jonny Rochester]

Some basic things that my be tripping you:
a disc is also called a rotor. So disc = rotor.

"Radial height" may also mean "radius" in some diagrams.

[adekunle]

Some basic things that my be tripping you:
a disc is also called a rotor. So disc = rotor.

"Radial height" may also mean "radius" in some diagrams.

I know a rotor is another name for disc. Ok, that is also like saying front pad radius height. Nice, noted, thanks.
But still why HEIGHT, why not front pad radius?. That word height confuses me to think its ALL about something else.

[Joshkb]

Just saw this thread...did you figure out your calculations?

Josh