Brake pad chamfer?

[David]

Just fitting some new pads on the the Pug and was surprised by the amount of chamfer on the pads Can't think of a good reason for so much. Any ideas?

[woody]

Looks fine to me, remember fitting a couple of sets of these.

[Rich H]

Speeds up break in due to higher contact pressure?

[David]

The geek in me got the better of me and I found this:

http://www.kyu.edu.tw/teacpage/teacpage ... C98-69.pdf

Seems it's to reduce brake squeal and the loss of stability/efficiency that results. The reduce pad area is of little consequence as Amontons law states that friction force remains the same.

[Stu160]

Stops Squeal as rar as I know, if you chamfer it down to 3mm, then when they start to sqeal, you need to check the pads.
Really must remember and do this to the next set of pads.....

Stu

[BiggestNizzy]

The geek in me got the better of me and I found this:

http://www.kyu.edu.tw/teacpage/teacpage ... C98-69.pdf

Seems it's to reduce brake squeal and the loss of stability/efficiency that results. The reduce pad area is of little consequence as Amontons law states that friction force remains the same.

Who knew
http://ocw.mit.edu/courses/physics/8-01 ... lecture-8/

Was going to moan about spending money on wide tyres but.... 3.10
http://ocw.mit.edu/courses/physics/8-01 ... s/sol3.pdf

[David]

An interesting subject, brake and tyre sizes are really about heat management and wear rates.

[martins]

Would you lot get a life, please

I will now have to go and read all this geek stuff or I will not be able to sleep.

Stop it please. I have better things to do with my time I think...

M

[henrybovis]

The geek in me got the better of me and I found this:

http://www.kyu.edu.tw/teacpage/teacpage ... C98-69.pdf

Seems it's to reduce brake squeal and the loss of stability/efficiency that results. The reduce pad area is of little consequence as Amontons law states that friction force remains the same.

Who knew
http://ocw.mit.edu/courses/physics/8-01 ... lecture-8/

Was going to moan about spending money on wide tyres but.... 3.10
http://ocw.mit.edu/courses/physics/8-01 ... s/sol3.pdf

That took me back a bit, god I hated being a student!

[martins]

BiggestNizzy wrote:

David wrote:The geek in me got the better of me and I found this:

http://www.kyu.edu.tw/teacpage/teacpage ... C98-69.pdf

Seems it's to reduce brake squeal and the loss of stability/efficiency that results. The reduce pad area is of little consequence as Amontons law states that friction force remains the same.




Who knew
http://ocw.mit.edu/courses/physics/8-01 ... lecture-8/

Was going to moan about spending money on wide tyres but.... 3.10
http://ocw.mit.edu/courses/physics/8-01 ... s/sol3.pdf

That took me back a bit, god I hated being a student!

FFS. We is not all engineers.

Stamp on the brake pedal, the car stops. Take your foot off the brake pedal the car un-stops....Unless you have a real old and dodgy S1 or a water bottle under the brake pedal. Simples.

[BiggestNizzy]

FFS. We is not all engineers.

Stamp on the brake pedal, the car stops. Take your foot off the brake pedal the car un-stops....Unless you have a real old and dodgy S1 or a water bottle under the brake pedal. Simples.

The car doesn't "un-stop" when you take your foot of the brake. The accelerator makes the car "un-stop" or using the technical term go.

[martins]

The car doesn't "un-stop" when you take your foot of the brake. The accelerator makes the car "un-stop" or using the technical term go.

Now we are getting somewhere. The above is far easier to understand than the man from MIT (Mind Induced Tedium).

You may have surmised by now I aint an en-gi-neer

M

[flyingscot68]

Accelerate = un-stop
Brake = un-go

I like that