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13-07.-2004, 05:54 AM
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#1 |
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Guest
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Tarnished D/A Components
Hi all,
Months ago, in a fit of anal-retentive compulsiveness, I immersed my Dura-Ace calipers and derailleurs in a citrus degreaser overnight, looking to totally clean them out, rebuild, re-lube, and reinstall them. When I retrieved them from the tank the next day, they'd tarnished an ugly shade of dark grey, which seem impervious to removal. Does anyone have any idea of how to remove this stuff, so I can return them to their former, shiny, gleaming state? Thanks! John John Faith Arlington VA USA jcfaith@earthlink.net |
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13-07.-2004, 05:54 AM
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#2 |
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Guest
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Re: Tarnished D/A Components
On Mon, 12 Jul 2004 12:19:02 GMT, "John Faith" <jcfaith@earthlink.net>
wrote: > >Months ago, in a fit of anal-retentive compulsiveness, I >immersed my Dura-Ace calipers and derailleurs in a citrus >degreaser........ Does anyone have any idea of how to >remove this stuff, so I can return them to their former, >shiny, gleaming state? Have you tried Simichrome polish? |
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13-07.-2004, 05:54 AM
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#3 |
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Guest
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Re: Tarnished D/A Components
i'd be extremely cautious about re-using those brakes. i'm
not sure what's in those degreasers, but look up "stress corrosion cracking" and check into the agents that affect aluminum alloys. the tarnishing is that you've destroyed the anodizing and are eating into the base metal. John Faith wrote: > Hi all, > > Months ago, in a fit of anal-retentive compulsiveness, I > immersed my Dura-Ace calipers and derailleurs in a citrus > degreaser overnight, looking to totally clean them out, > rebuild, re-lube, and reinstall them. When I retrieved > them from the tank the next day, they'd tarnished an ugly > shade of dark grey, which seem impervious to removal. Does > anyone have any idea of how to remove this stuff, so I can > return them to their former, shiny, gleaming state? > > Thanks! > > John > > John Faith Arlington VA USA jcfaith@earthlink.net > |
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13-07.-2004, 05:54 AM
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#4 |
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Guest
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Re: Tarnished D/A Components
The degreaser used probably had mild acids in it. They will
begin to eat aluminum if left on too long. I would not be afraid to use them. The anodizing is just a couple thousands of an inch thick and mainly for cosmetic reasons. -BW "John Faith" <jcfaith@earthlink.net> wrote in message news:WkvIc.3326$sV2.25@newsread2.news.atl.earthlink.net... > Hi all, > > Months ago, in a fit of anal-retentive compulsiveness, I > immersed my Dura-Ace calipers and derailleurs in a > citrus degreaser overnight, looking to totally clean > them out, rebuild, re-lube, and reinstall them. When I > retrieved them from the tank the next day, they'd > tarnished an ugly shade of > dark grey, which seem impervious to removal. Does anyone > have any idea of how to remove this stuff, so I can return > them to their former, shiny, gleaming state? > > Thanks! > > John > > John Faith Arlington VA USA jcfaith@earthlink.net |
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13-07.-2004, 05:54 AM
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#5 |
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Guest
Posts: n/a
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Re: Tarnished D/A Components
"John Faith" <jcfaith@earthlink.net> wrote in message news:<WkvIc.3326$sV2.25@newsread2.news.atl.earthlink.net>...
> Hi all, > > Months ago, in a fit of anal-retentive compulsiveness, I > immersed my Dura-Ace calipers and derailleurs in a citrus > degreaser overnight, looking to totally clean them out, > rebuild, re-lube, and reinstall them. When I retrieved > them from the tank the next day, they'd tarnished an ugly > shade of dark grey, which seem impervious to removal. Does > anyone have any idea of how to remove this stuff, so I can > return them to their former, shiny, gleaming state? > > Thanks! > > John > > John Faith Arlington VA USA jcfaith@earthlink.net Hi John, Dam! :-( Sorry to hear of your mishap, and thank you for sharing this info with us. About all I think you can do now, is to try to re-polish the parts. Since you already have them broken down, this is about all you can do: Perhaps first, take something like 0000 Steel wool, and very lightly hand polish each part, removing all the nasty looking coating of drab grey. Then as another poster suggested, use a high quality metal polish such as Simichrome, or Flitz, and with some time, and care by hand, they may even have a higher luster than they did stock. Only thing is, you probably lost the D-A Emblems. Also, without the protective clear anodizing, they may dull slightly over time, and will need a re-polishing. To keep the high luster, they can perhaps be de-greased after polishing/waxing, and then a coat of Krylon Clear Spray over them, then re-assemble. This might look a bit tacky/cruddy though. I myself would probably re-frain from coating them with anything, but that's gotta be your call. Hope this helps you, Mark |
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