dear rusty

there was a comment .....Actually, nothing will stop seams rusting in the
long term. Car bodies
flex when they go over road irregularities, and this causes the seams
to work... eventually... er... WORKING any sealant an.....

well tis is simply not true as such ...
my buddy has several vehicles that are daily drivers and work vehicles ....
all 1950 or older ...
he has stalled ... mitigated ... and arrested rust on all by spraying raw
linseed oil ...
uses a soft drink syrup can and wand with special spay end
treats vehicle twice a year .. excellent results ...
this summer i will try ... this ... raw linseed oil treatment
i will report results in the coming years ...

BTW ... he reports the Linseed oil soaks right into the metal
seams and joints and all ...

i imagine his experience has some value ....
he is 62 and has had the 1948 M47 mercury since the late 1960's

yours

On Sun, Aug 16, 2009 at 9:23 PM, miguel pacheco <mundopacheco@gmail.com>wrote:

> I was at a 'It's a Beautiful Day' concert in 1970, on acid, so I guess
> I'm an Electrochemist responding to Andrew's request! Please, no calls
> until after 1300 hrs!!
>
> Miguel
>
>
>
> On Sun, Aug 16, 2009 at 9:39 AM, Alistair Bell<albell@shaw.ca> wrote:
> > Andrew,
> >
> > your'e wrong here.
> >
> >
> > It is called galvanizing, whether hot dipped or electroplated. Modern
> > car makers do use it to some degree or another.
> >
> > But the important thing you do not understand is the protective
> > effect of galvanizing has *everything* "to do with electrolysis".
> >
> > Do more study, you'll find how that the zinc coating acts as the
> > sacrificial anode when applied to metal, so much that even if the
> > coating is broken it still protects the un-covered steel.
> >
> > Mind you it works better on simple structures like anchor chains,
> > cleats, etc. Less well when the structure is complicated and there
> > can be localised extreme conditions, as in a car, or a fastener
> > through differing materials, stray currents at moorages, etc.
> >
> > Galvanizing works, hot dipped more than electroplated (hot dipped has
> > more zinc applied).
> >
> >
> > Alistair
> >
> >
> >
> > On 16-Aug-09, at 1:48 AM, Andrew Grebneff wrote:
> >
> >
> >
> >> But VW and the other car companies did the
> >> next best thing. They started building cars in the 80s with steel
> >> panels
> >> coated with a sacrificial anode - it's called zinc plating.
> >
> > This is NOT galvanizing. Galvanizing is electroplating... what you end
> > up with is a thin coat of zinc metal (visible as flattened crystals on
> > the surface) over the base metal. What the carmakers do is to treat
> > the metal sheet with some chemical, which leaves a residue on the
> > steel. This is rather ineffective.
> >
> > Thye purpose of galvanizing has nothing to do with electrolysis. What
> > it does is merely to keep the steel surface completely away from
> > water. Nio water, no rust (one form of iron oxide, I think a hydrous
> > one; as a mineral in nature I think it is limonite).
> >
>

--
roger w
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servant who becomes king ...
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