A bunch of H2O isn�t required to promote corrosion between dissimilar
metals, just a few drops now and then.  Cyclists see this all the time
when an AL seatpost is installed in a Cro-Moly Steel frame without a
whole bunch of grease to prevent seizing --> permanent weld.  That said,
I was always under the impression that Stainless steel is relatively
inert and wouldn�t react much (at all) with AL.

~Eric~

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of Terry K.
Sent: May 15, 2002 2:28 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Subject: Re: Want to paint camper roof

So MIke,

With this theory in mind,

If I took an aluminum plate, and laid it flat on a peice of steel,your
telling me the aluminum would corrode, after a period of time?

I doubt it-----

If I am not mistaking, it would take a bunch of H2O passing between
these two metals at a constant rate to cause a cavitation phenomia, for
this to occur---

So, I believe one would have to run his / her vehicle through a car wash
10 times a day, every day, for maybe 10 years for this to happen between
the pop rivets, and the cleats on the luggage rack----

And a simple solution to this hypothetical problem, would simply
insulate the rivet from the cleat---dip the rivet into a bit of
silicone, prior to installing it into the stainless cleat---or bolt a
sacrificial lead annode on the luggage rack--yea that's it----and
nothing will happen----

Ok, one more thing---please tell me the source for the stainless pop
rivets, that I never have seen---

Later,

Terry

E-mail message Mike�Boland

electrolysis is due to two different types metals...one acts as - other
as + in time they'll corriod..
Mike

At 12:36 AM 5/15/2002 -0500, Terry K. wrote:

But as we are not in a marine environment--the aluminum will work just
ducky Alistair-----

I have never seen stainless pop type rivets----

I doubt electrolysis will kick in on the fiberglass luggage rack of a
Westy---:>)
Later,
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Terry--
����������������"Zoom, Zoom, Zoom"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
http://community.webtv.net/CTONLINE/TerrysHighOnLife

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