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#3830294 - 08/22/15 06:33 PM Coke can for brake disks
Ducked Offline


Registered: 10/25/12
Posts: 4081
Loc: Taiwan
Coke cans for Brake Disks.

Not actually AS brake disks, but to clean them up a bit.

Exhibit A : Drivers side front hub and brakes.




I put the foil on the hub a couple of years ago to stop the wheels rusting on. Seems to have worked, but of course the remains look messy. The rusted remains of a shim have displaced and are stuck against the disk boss. The brakes don't squeal and I probably wouldn't care much if they did, so I probably don't need shims.

Exhibit B : During cleanup.



Other wheel is chocked and the engine run in second gear. (higher gear might have been better but wasn't sure the diff would like it.) Coke (or beer) can top/bottom (or whole thing crushed) is forced against the disc rim. Whole can crushed has more material but is a bit grabby and top or bottom is probably safer. You could easily get your hand mangled doing this, and it might have been smarter to hold the can section with mole grips.

I wore eye protection but no breathing or hearing protection, both of which would probably have been a good idea. Stray dogs cleared the area as soon as I started.

Exhibit C: Disk after cleanup (this is actually the other side)



Exhibit D: "Tools"

The bits of TV ariel were used for the side of disk boss, You CAN get a can in there but it feels too risky.

Exhibit E : Caliper guide pin before cleanup.




Exhibit F : Caliper parts after cleanup



I don't know if the "shinyness" on the disk edge is clean steel or adherent aluminium. The latter would be better from a corrosion reistance perspective but I'd guess its a bit of both.

Clearly the steel is still pitted, and it would take a very long time to remove the pits. I'm not using any binder for the aluminium here, because I'm concerned about contaminating the pad surfaces, but that would probably help fill the pits and I might try it. Superglue would probably be safest in this application, but it'll likely burn off, as would anything else I can think of except maybe ceramics.

I've tried various tricks to clean up brake disks for the UK MOT (annual anal vehicle inspection). None of them worked, and this probably wouldn't either, but it looks more promising than anything else I've tried. Electrolysis would probably be better but I don't have to pass an MOT any more so I havn't bothered to set that up.

(There were traces of what was probably very old hardened copaslip on the stainless slides, the pad backs, and perhaps some contamination of the pads. I cleaned this off (initially under water) with coke can, foil, scraped the pads with a razor blade, boiled them, dried them off, and then used brake cleaner on them, and they look a lot better, but of course you cant really get all that stuff off.)

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#3830416 - 08/22/15 08:55 PM Re: Coke can for brake disks [Re: Ducked]
another Todd Offline


Registered: 05/15/06
Posts: 2199
Loc: Lakeside CA
Not worth the risk of getting tangled up in the spinning rotor. Get a wire brush or wire wheel on a drill or air gun.

Is that Teflon tape on the wheel studs? 3rd pic. Why is that on there?
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#3830425 - 08/22/15 09:07 PM Re: Coke can for brake disks [Re: Ducked]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 5861
Loc: USA
A good reason to use coated rotors like Centric Premium and VGX Platinum smile

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#3830569 - 08/23/15 01:32 AM Re: Coke can for brake disks [Re: another Todd]
Ducked Offline


Registered: 10/25/12
Posts: 4081
Loc: Taiwan
Originally Posted By: another Todd
Not worth the risk of getting tangled up in the spinning rotor. Get a wire brush or wire wheel on a drill or air gun.


Thanks for your reply. Re wire wheel, tried it many years ago. Didn't seem to work as well, and didn't work well enough to pass a British MOT (though this might not either).

Plus its not easy to get power to the car here.

Originally Posted By: another Todd
Is that Teflon tape on the wheel studs? 3rd pic. Why is that on there?


I use Teflon tape as an anti-seize substitute. Its also visible on the threaded end of the caliper pins.

In this case I also had used a cats cradle of it between the studs, to hold some aluminium foil in place on the hub, since I've had the wheels rust on. This seems to stop them doing that.

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#3830571 - 08/23/15 01:36 AM Re: Coke can for brake disks [Re: slacktide_bitog]
Ducked Offline


Registered: 10/25/12
Posts: 4081
Loc: Taiwan
Originally Posted By: slacktide_bitog
A good reason to use coated rotors like Centric Premium and VGX Platinum smile


You can't readily buy anything automotive here EXCEPT bling. Those sound like they might be bling, so you MIGHT be able buy them, but they won't be free.

Coke cans, OTOH...

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#4728836 - 04/16/18 12:44 PM Re: Coke can for brake disks [Re: Ducked]
camrydriver111 Offline


Registered: 07/01/14
Posts: 1488
Loc: Canada
This is an inspirational thread.

Using whatever resources you have available to fix your car instead of buying fancy products or new parts.

I usually use sandpaper for sliding pins but it's not good for a large surface like a wheel hub.

Did you season the parts in oil to prevent further rust?

Originally Posted By: Ducked
Originally Posted By: slacktide_bitog
A good reason to use coated rotors like Centric Premium and VGX Platinum smile


You can't readily buy anything automotive here EXCEPT bling. Those sound like they might be bling, so you MIGHT be able buy them, but they won't be free.

Coke cans, OTOH...


Is this in Taiwan?
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#4728961 - 04/16/18 02:38 PM Re: Coke can for brake disks [Re: camrydriver111]
maxdustington Offline


Registered: 01/21/17
Posts: 234
Loc: Toronna
Originally Posted By: camrydriver111
This is an inspirational thread.

Using whatever resources you have available to fix your car instead of buying fancy products or new parts.

I usually use sandpaper for sliding pins but it's not good for a large surface like a wheel hub.

Did you season the parts in oil to prevent further rust?

Originally Posted By: Ducked
Originally Posted By: slacktide_bitog
A good reason to use coated rotors like Centric Premium and VGX Platinum smile


You can't readily buy anything automotive here EXCEPT bling. Those sound like they might be bling, so you MIGHT be able buy them, but they won't be free.

Coke cans, OTOH...


Is this in Taiwan?


+1 Ducked is top five poster on this board for me. If the world ever ends and I am even close to Taiwan, I am going to find him and we will rebuild civilization one coke can at a time.

Hey Ducked, could you please post a picture of your car? I've always wanted to see that heap.
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