Miks15
|
| posted on 13/7/09 at 09:29 AM |
|
|
Cleaning rusty brake discs
How do i go about cleaning the rust of my brake discs? Theyve been lying around for over a eyar now and have a bit of rust built up on them, i wanna
put them on but wana clean them upa nd also paint the center bit of them.
Thanks
Mikkel
|
|
|
|
|
balidey
|
| posted on 13/7/09 at 09:31 AM |
|
|
I attack the worst of the crust with a wire brush, then emery cloth, then wipe with brake cleaner. Then emery again, then brake cleaner again.
|
|
|
BenB
|
| posted on 13/7/09 at 09:35 AM |
|
|
What you need is a slightly abrasive pad that will come into contact with the disc 
How bad is the rusting? Is it really bad enough to warrant any form of skimming? Unless there's flaking or pitting I'd just let the brake
pads do that for you....
|
|
|
Mr Whippy
|
| posted on 13/7/09 at 09:37 AM |
|
|
Electrolysis would be very good for this
Fame is when your old car is plastered all over the internet
|
|
|
britishtrident
|
| posted on 13/7/09 at 09:44 AM |
|
|
80 grade production paper in an orbital sader is all that is required --- you want a slightly rough surface not a mirror finiish.
Those paint stripper pads for the end of an electric drill also work pretty well.
|
|
|
blakep82
|
| posted on 13/7/09 at 11:05 AM |
|
|
paint the bits you want painted, and let the brake pads do the rest
[Edited on 13/7/09 by blakep82]
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
|
|
|
Steve G
|
| posted on 13/7/09 at 11:07 AM |
|
|
Depends on what the disks are off - i generally find they are so cheap to buy that i just get a brand new set. Last ones i bought were under £20 per
pair!!
|
|
|
James
|
| posted on 13/7/09 at 11:35 AM |
|
|
I wouldn't paint either the hub or wheel face.
I found that variation in thickness of paint was enough to cause the disc to 'wobble' such that it could be heard hitting the pads.
After scraping all the paint the problem was gone.
Cheers,
James
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
|
|
|
MikeRJ
|
| posted on 13/7/09 at 01:05 PM |
|
|
I've used a flap wheel in an electric drill with the disk mounted on the hub. Hold the flap wheel at an angle and it spins the disc around as
it sands the rust off. Doesn't work on driven wheels, have to start the engine and put it in gear for those 
|
|
|
iank
|
| posted on 13/7/09 at 06:03 PM |
|
|
quote:
Originally posted by Mr Whippy
Electrolysis would be very good for this
Brake discs are risky to use electrolysis on due to a small chance of them suffering hydrogen embrittlement - which could theoretically cause them to
shatter in use
http://en.wikipedia.org/wiki/Hydrogen_embrittlement
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
|
|
|
flak monkey
|
| posted on 13/7/09 at 07:36 PM |
|
|
THE TOOL!!!  (angle grinder with wire brush cup!)
Sera
http://www.motosera.com
|
|
|
DavidW
|
| posted on 13/7/09 at 09:28 PM |
|
|
quote:
Originally posted by flak monkey
THE TOOL!!! (angle grinder with wire brush cup!)
Definitely.
|
|
|
Ninehigh
|
| posted on 14/7/09 at 01:13 AM |
|
|
My discs get a layer of rust from washing the car, by the time I get to work it's gone. I know your rust is much worse but be gentle for a while
and it'll disappear soon enough
|
|
|
