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Warped Brakes
https://www.ausmini.com/forums/viewtopic.php?f=2&t=7677		 Page 1 of 1
Author:  Sorceress [ Mon May 30, 2005 8:30 pm ]
Post subject:  Warped Brakes
I think the run through the OPH to Terrigal warped my disk brakes!! :?

Cant believe ti! :evil:
Author:  min13k [ Mon May 30, 2005 8:32 pm ]
Post subject: 
i doubt that would happen maybe the bearings need a tighten what are the simptoms sorcy ??
makka
Author:  Wolfman [ Mon May 30, 2005 8:38 pm ]
Post subject: 
Yeah, I'm with Makka, never seen discs warp from normal use
Author:  J_A_M [ Mon May 30, 2005 9:09 pm ]
Post subject: 
well my shagn wagon daily hack had warped discs....it's an auto and I am heavy on the brakes......I had to replace them. $220 new....or $25 second hand :wink:

I say if you ride your brakes you can warp them!
Author:  Morris 1100 [ Mon May 30, 2005 9:26 pm ]
Post subject: 
J_A_M wrote:
well my shagn wagon daily hack had warped discs....it's an auto and I am heavy on the brakes......I had to replace them. $220 new....or $25 second hand :wink:

I say if you ride your brakes you can warp them!


Trick question...... How do you know that they were warped? Did you measure the runout with a dial gauge?
Author:  -=MiniMafia=- [ Mon May 30, 2005 9:33 pm ]
Post subject: 
i heard u can warp discs by putting on the hand brake when they are hot. mind u that was from a ricer........
Author:  min13k [ Mon May 30, 2005 9:41 pm ]
Post subject: 
mini's dont have disk's on the back !!!!!!
makka
Author:  drmini in aust [ Mon May 30, 2005 9:45 pm ]
Post subject: 
Discs are made from cast iron. Some have a reputation for warping. Ford had this problem with the AU falcon.

Some are better made than others too- I once bought a Fiat one that had 2mm runout...! I took it back.

The best discs are left a while between casting and machining. This lets cooling stresses in the casting dissipate, less chance of warping after some heat & cool cycles..

I've had good results with Karcraft's S discs (from UK), also RDA and DBA ones. :wink:
Author:  Sorceress [ Mon May 30, 2005 9:46 pm ]
Post subject: 
its a squeak on rotation.
Author:  drmini in aust [ Mon May 30, 2005 9:48 pm ]
Post subject: 
Sorceress wrote:
its a squeak on rotation.

Check the disc runout- usually this can be reduced (and the squeak fixed) by repositioning the drive flange on the CV.
Author:  9YaTaH [ Mon May 30, 2005 11:09 pm ]
Post subject:  Mice?
Sorceress wrote:
its a squeak on rotation.


You may have rodents in your front end....

Hmmm.....maybe you just glazed a pad being a little over exuberant....
Author:  68matic [ Tue May 31, 2005 12:25 am ]
Post subject: 
would your discs and something called "self adjusting calipers" have something in common? or not?
Author:  simon k [ Tue May 31, 2005 10:53 am ]
Post subject: 
Sorceress wrote:
its a squeak on rotation.


squeaks are usually caused by microvibrations between the piston and the pad, caused by brake dust getting inbetween them, they sell anti-squeak paste and other things for this reason. Minis are supposed to have anti-squeal plates in there, but most don't have them. I've seen a bit of silastic used to stick the pads to the pistons

could also be glazing as Mick has said

take the pads out, give them a clean back and front, wipe the piston faces down with a clean rag and see what it's like

warped disks would cause violent shudder under braking. They can warp or crack if you do a lot of heavy braking, and then stop without them cooling down under rotation
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