Aston Martin DB7, DB9, DBS, Vantage V8, Vanquish, and Classic models

RED STUFF squealing

Old Apr 10, 2017 | 07:51 AM
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RED STUFF squealing

I was on my way to work this morning and decided to leave a bit early and swing past a bud who is really great with spanners, having recently sent him to REDPANTS tutorial videos.

He agreed after looking at the vid that a brake pad swap in the rear is a very quick job so we will do it.

I had EBC Red Stuff in stock, we cleaned of all the bits as shown in the vid put on loads of copperslip to reduce the shimmy effect I have read about on this forum, but guys nothing prepared me for the scream the rear pads make!!!
what can I do to sort it out??? Help please.

Pics showing the old and new pads and installed, the red stuff has some type of bedding compound about a half a mm thick as standard supply on each pad.

This really sucks Help appreciated

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Old Apr 10, 2017 | 08:48 AM
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Red Stuff

Hallo Greg.
The Red stuff is really hard. But from what I can see in the picture is that the rear discs look a bit worn. I do not say that they are scrap!
If it was mine I would see how deep the grooving is and if there is material left then give it a very light skim.
Sometimes the new pads are a tad bigger than the previous set and they only catch on the very inside and outside. That can also cause a scream.

I will gladly help you if you want. Put your car in the garage remove the disks and send them via courier. You can put the tyres back on while waiting. Just don`t use the brakes in the garage. I will check them out and let you know before they get skimmed.
The brake and clutch places just cut regardless of the thickness and wear.

I did my front last week and it is smooth all over again.

No Charge just to another Aston owner favour.

Regards

Kobus
 
Old Apr 10, 2017 | 08:54 AM
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I had the Redstuff last year, noise was terrible. Here my recipe to stop the squealing:
  1. Normal driving for around 200-300 Km until the bed in coat is fully worn off.
  2. Bedding-in: braking from 100 Km/h to 30 Km/h using medium pedal pressure, let them cool for 300m then repeat process 6 to 10 times.
  3. Drive 10 minutes without braking (if possible) to cool the brakes.
  4. Basically like step 2, but increase speed to 120-140 Km/h and apply (very)strong pedal pressure. You will get some smell from the pads
  5. Same as step 3.
You can repeat steps 2 to 5 repeatedly if you like.

This helped but until the terrible noise stopped completely I had to drive around 800 Km. Not nice but it was rewarding, great stopping power, no fading and almost no brake dust on the wheels.

This year I did the same with YellowStuff, did work perfekt.

I hope you got good nerves but it's worth it.

Cheers

Christian
 
Old Apr 11, 2017 | 02:03 AM
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Thanks guys appreciate the feed back and offer

Greg
 
Old Apr 11, 2017 | 08:03 AM
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Put same pads on mine about a year ago. Squeeling was horrendous. It's mostly gone away but seems to come back for a bit when there's some moisture in the air. When it does I ride them for a bit and it goes away. Very annoying.
Don told me to swap out for Ferodo's
 
Old Apr 11, 2017 | 09:17 AM
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Originally Posted by Old phart
Put same pads on mine about a year ago. Squeeling was horrendous. It's mostly gone away but seems to come back for a bit when there's some moisture in the air. When it does I ride them for a bit and it goes away. Very annoying.
Don told me to swap out for Ferodo's
Im going to pill them and re do the copperslip its real bad and very un Aston Martin

Thanks for the heads up
 
Old Apr 11, 2017 | 09:33 AM
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Red Stuff

Greg

Careful that the copperslip does not melt and flow down to the disks. By putting to much on.

Regards

Kobus
 
Old Apr 12, 2017 | 12:37 PM
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Thanks Aston40 and just a big shout out to you as well, it seems we have our very own redpants right here in SA

So I decided to skim the disks and despite my arsenal of cnc machines in my humble workshop Aston40 advised me to be careful when clocking disks into a lathe and pointed me to things I never considered.
That said I called in a mobile disk skimming service who cut the disks back leaving me with 26.8mm of material.
I re installed the bits and took special attention in the assembly process by lubricating the contact points and pins, took it out and dead silent but it was short drive so in the next few days I will have it out and hope it will remain silent.

Having read all the threads on squealing brake pads Im very happy to report that mine is gone after skimming and re assembly, I had no special paste and used copperslip.
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Old Apr 14, 2017 | 11:14 PM
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Hi Greg - I have ECB Yellows and the rears squealed for the first 500km.
It goes away gradually and it appears to help if you do some really rapid stops.
It is worst as you are rolling to a stop in town.I also found that as you are rolling to a stop it helps if you quickly lift off the brake pedal and reapply.
 
Old Apr 15, 2017 | 10:43 AM
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Originally Posted by Scotty4300
Hi Greg - I have ECB Yellows and the rears squealed for the first 500km.
It goes away gradually and it appears to help if you do some really rapid stops.
It is worst as you are rolling to a stop in town.I also found that as you are rolling to a stop it helps if you quickly lift off the brake pedal and reapply.
Thanks for this I had it out today and it seems fine, some whirring sound as it glides to a stop, sounds like an electric car in the last few metres of the stop but no squealing

I hope it stays like this
 


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