RE: RE: $#@# Brakes continued

From: Brian (hskr@cox.net)
Date: Tue Sep 21 2010 - 22:00:43 EDT


All the EBC rotors come with the zinc coating. It does not cost any extra
other than the already higher cost for the EBC rotors over cheaper option.
Nobody ever said it provided any functional benefit other than being a rust
inhibitor.

brian cropp
> -----Original Message-----
>
>
> Zinc is probably the most common corrosion barrier; almost all of
> the nuts and bolts you'll find in the hardware store are zinc coated.
> Its available in several colors including silver, blue, gold and
> black, amoung others. Zinc protects the metal in two ways; the first
> is by providing an oxygen and moisture barrier between the steel and
> the atmosphere - this is the same way almost any protective coating
> works, such as paint. However, zinc has an added level of protection
> - it acts as a sacrificial cathode, so even if the zinc layer is
> damaged and the steel is exposed (such as a scratch), the zinc in that
> area will corrode before the steel, and the steel will not begin to
> rust until the zinc is gone.
>
> It sounds to me like the rotors you got were simply black zinc
> electroplated. Probably this will make the rotors look nice for a
> while longer, but won't impart any functional benefit to the rotor,
> IMHO. It shouldn't impart any deterimental effecs either though, so I
> wouldn't worry about that. If I were buying rotors, I'd probably go
> for the zinc plated version as long as they weren't more than a few
> dollars extra over plain rotors. Someone with a show truck might put
> a higher premium on their rotor appearance though.
>
>
> --
> -Jon-
>
> .- Jon Steiger -- jon@dakota-truck.net or jon@jonsteiger.com -.
> | '96 Kolb Firefly, '96 Suzuki Intruder, Miscellaneous Mopars |
> `-------------------------------- http://www.jonsteiger.com --'
>
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