Miata Mailing List: March 1997, Message #79
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   From: (none)

Subject: Re: chrome wheels, the answer

   Date: (none)





>

>When chrome plating an MB light alloy wheel, the wheel must first be

>anodized (copper plated).

>The difference in EMF (Electro-Motive Force) values between copper and

>aluminum results in

>electrolytic corrosion with aluminum being the sacrificial metal.



I can definitely tell you that aluminum and copper in contact with each

other will cause

corrosion. I bought a set of BMW valve stem caps for my brother-in-law for his

birthday. You know the kind I'm talking about; the ones with the little emblem

on the cap. Anyway, he wound up having to use a chisel to remove two of them

because the copper to aluminum contact had caused the two to bond to each other

in such a complete way that they could not be removed without brute force.

Definitely something to consider.



Scott and Woody, who thinks dad needs to stop going to car dealerships.



MCA member #60732

Team CRI horns

Team Hard Dog

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             Wind in my hair, shifting and drifting,

              mechanical music,  adrenaline surge

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