Blimey - I guess being the recommended min thickness it will be safe, but 4mm strikes me as being scarily thin
| International2cvFriends.com http://www.international2cvfriends.com/forum/ |
|
| When to replace brake disks? http://www.international2cvfriends.com/forum/viewtopic.php?f=7&t=3668 |
Page 1 of 2 |
| Author: | samfieldhouse [ February 4th, 2012, 7:14 pm ] |
| Post subject: | When to replace brake disks? |
How do you know when to replace them? I guess the obvious answer is 'when braking performance is poor' however I have no comparison. The disks have done at least 60,000 miles (they haven't been changed in my ownership) and there is a noticeable groove in the disk where the pads grip it. She does, however stop fine and received no advisories on it at the last MoT. Advice/thoughts appreciated. |
|
| Author: | knightley [ February 4th, 2012, 7:25 pm ] |
| Post subject: | Re: When to replace brake disks? |
Most manufacturers specify a minimum thickness for brake discs. I'd follow that advice. Just checked. 4mm. minimum thickness. 0.2mm. run-out. |
|
| Author: | J-dub [ February 4th, 2012, 7:54 pm ] |
| Post subject: | Re: When to replace brake disks? |
Isn't it also when there rusted to hell or scored badly? |
|
| Author: | 2CViking [ February 4th, 2012, 8:03 pm ] |
| Post subject: | Re: When to replace brake disks? |
The risk is cracking the disc. Seen it a few times, one flying disc removed the caliper from the gear box and became a very expensive repair. Also the risk of loosing all brakes is scary. Replace when the micrometer is reading 4.5 mm Attachment: 2cv disc.JPG |
|
| Author: | Devils Advocate [ February 6th, 2012, 11:33 am ] |
| Post subject: | Re: When to replace brake disks? |
Blimey - I guess being the recommended min thickness it will be safe, but 4mm strikes me as being scarily thin
|
|
| Author: | 2CViking [ February 6th, 2012, 12:05 pm ] |
| Post subject: | Re: When to replace brake disks? |
Devils Advocate wrote: Blimey - I guess being the recommended min thickness it will be safe, but 4mm strikes me as being scarily thin That is Citroens minimum. All new none Citroen disc have 5 mm stamped on as minimum. |
|
| Author: | Sean [ February 6th, 2012, 12:28 pm ] |
| Post subject: | Re: When to replace brake disks? |
given that they come up cheaply on fleabay ill stick new ones on at the drop of a hat, last bunch all used up now so ill have to keep an eye open. Sean |
|
| Author: | Jonathan [ February 6th, 2012, 12:52 pm ] |
| Post subject: | Re: When to replace brake disks? |
The discs on my 2CV have done at least 143,000 miles and there's not much wear (though a previous set of pads lasted over 60,000 and were only replaced due to becoming glazed by age  ).
|
|
| Author: | Sean [ February 6th, 2012, 1:09 pm ] |
| Post subject: | Re: When to replace brake disks? |
but your car has been in almost constant use? a car thats been sat up for a while often has glazed rust as the brake surface - ive always found chipping this off and sanding back never gave long lasting results a n.ew set of disks at £35 and you have a good pedal from the word go and a fighting chance of a working handbrake. |
|
| Author: | ken [ February 6th, 2012, 3:49 pm ] |
| Post subject: | Re: When to replace brake disks? |
Viking, 6 sets of discs here, supposedly from 2 different manufacturers, but all stamped with minimum thickness of 6.3mm. If you compare that with Citroen's recommendation of 4mm minimum, that's the service life reduced by a factor of 4. Cheeky beggars...  Cracking is most commonly associated with overheating, but quenching hot discs with (or in) water is a short cut to disaster. ken 2CViking wrote: Devils Advocate wrote: Blimey - I guess being the recommended min thickness it will be safe, but 4mm strikes me as being scarily thin That is Citroens minimum. All new none Citroen disc have 5 mm stamped on as minimum. |
|
| Page 1 of 2 | All times are UTC + 1 hour [ DST ] |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|