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PostPosted: Thu Sep 05, 2013 1:10 am 
Dirt Disciple

Joined: Mon Sep 12, 2011 6:41 pm
Posts: 49
Hi all,

I recently picked up a 92 Litespeed Ocoee with a Rock Shox Mag21 SL Ti fork. As you can see, the finish almost has a tarnished look to it.

What would you use to try to brighten it up a bit?

Thanks,

Image

Image


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PostPosted: Thu Sep 05, 2013 10:34 am 
Gold Trader
Gold Trader
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Joined: Sat Oct 23, 2010 10:33 pm
Posts: 2119
Location: New Forest
I had the exact same dilemma a few months ago:

viewtopic.php?f=6&t=261019&start=30

The Magnesium alloy tarnishes under the (Clear, but tinted) powdercoat. I couldn't find a match, so went for a custom colour.

In the end, I stripped the legs of powdercoat (Wurth Gasket remover) polished, painted with lacquer, and couldn't get the finish I wanted, so stripped them again, roughed them up, etch primed, dusted with 4 coats of colour, followed by several coats of lacquer, followed by polish.

HTH.


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PostPosted: Fri Sep 06, 2013 12:30 am 
Retro Guru
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Joined: Sun Jun 23, 2013 3:12 pm
Posts: 1080
Location: Southernmost US
As noted above, these forks were known to tarnish. I had a brand new one on a Zaskar LE that did that in under six months. Shop owner sent it back for a replacement and I still have that same fork without tarnish. They must have changed a preservation process from lot to lot.


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PostPosted: Fri Sep 06, 2013 1:06 am 
Dirt Disciple

Joined: Mon Sep 12, 2011 6:41 pm
Posts: 49
Thanks all. This bike apparently set out in the desert sun for years, so I'm thinking that the powercoat, as plastic, has pretty well burned off. I'll experiment a little and see what I can do. Start gently, i.e., Brasso, and then perhaps escalate.


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PostPosted: Fri Sep 06, 2013 3:05 am 
Retro Guru
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Joined: Sun Jun 23, 2013 3:12 pm
Posts: 1080
Location: Southernmost US
Pls keep us posted and good luck with the project.


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