Rear Brakes Making Scraping Sound...

[Pepsi_x]

Hi guys,

I rather foolishly left the handbrake fully on then didn't have cause to use the Chimaera for 10 days, so unsurprisingly it stuck on somewhat when I did eventually need to move it. This sort of thing happens from time to time and as normal there was a bit of a bang and it seemed to release, the only thing is now I can hear a definate scraping sound from the rear (passenger side I think), so I am hoping that is something to do with the handbrake sticking in the first place, as everything was fine before that.

I don't know how the handbrake mechanism works but I suspect something is still stuck "on" somewhere (does that sound realistic?) and is therefore rubbing, the noise itself speeds/slows with the speed of the car.

Any thoughts??

Cheers

[FlipFlopGriff]

Pads onto the disk? Has it been outside? Water gets into the disks and they warp from inside. Just had to have all 4 replaced for the same reason although they were slightly worse than just scraping. They may look OK from the outside but take a wheel off and look at the inside, you'll probably find the pad is only clearing a small area in the centre of the disk. It may clear but maybe best to replace if they aren't nearly new. Not something to mess about with.
FFG

[Barreti]

As FFG says, it's a quick job to jack up the car, prop it on a stand and pull the pads out to see what they are telling you. If there is something amis either the pads themselves or the rotor will have tell-tale marks on to give you a clue whats happening.

[Pepsi_x]

Hmmm, the pads and disk are brand new (well about 1,000 miles ago tops).

A local garage (non-tvr) said its probably the handbrake sticking somewhere or possibly a small part of the pad has broken off when they stuck and is rubbing.

Oh well, I'm at TVR Power on Saturday, I'll ask them to have a quick look...

ta

[FlipFlopGriff]

Pepsi_x said:

Hmmm, the pads and disk are brand new (well about 1,000 miles ago tops).

A local garage (non-tvr) said its probably the handbrake sticking somewhere or possibly a small part of the pad has broken off when they stuck and is rubbing.

Oh well, I'm at TVR Power on Saturday, I'll ask them to have a quick look...

ta

Our rear discs were 2 months old!
FFG

[bigdods]

Does the disk look blue ? I had a small rubbing type noise from one side, check the disks, 3 silver ones, one blue one ! They go blue with the heat. Local indie popped the pads out and found there was some contamination on the pads and the slider was a bit sticky. Lubed the slider , skimmed the pads, put it back together problem solved. This was with Black Diamond grooved and drilled , EBC Reds.

[Pepsi_x]

They are EBC Red Stuff pads, with drilled/grooved discs too....so it does sound as though something is sticking, I am hoping someone at TVR Power is able to have a look whilst I am having a run in the Taraka demonstrator...

[TheGriffalo]

Just tap the caliper either way gently with a small mallet. That should sort it

[S6PNJ]

bigdods said:

skimmed the pads

How did you do this if you don't mind me asking? Was it manually or with a machine?

[bigdods]

S6PNJ said:

bigdods said:

skimmed the pads

How did you do this if you don't mind me asking? Was it manually or with a machine?

No idea to be honest. They whisked the car away , did the work and gave it back all working again. Only took about an hour. The impression I got was that a machine was used to skim a thin layer off the pad surface to remove the contamination. I am no expert but it sounded plausible to me....

[FlipFlopGriff]

I think its just rubbing with a block covered with emery paper, nothing more, to take the glaze off.
FFG

[S6PNJ]

FlipFlopGriff said:

I think its just rubbing with a block covered with emery paper, nothing more, to take the glaze off.
FFG

Thanks.