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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!destroyer!gatech!concert!theo!brooks
- From: brooks@mcnc.org (Ted Brooks)
- Subject: Re: electronic rustproofing.
- Message-ID: <1992Oct12.205958.5463@mcnc.org>
- Sender: daemon@mcnc.org (David Daemon)
- Nntp-Posting-Host: alvin.mcnc.org
- Organization: MCNC Center for Microelectronics, RTP, NC
- References: <2927645605.1.p00140@psilink.com> <70692@hydra.gatech.EDU> <1b4vr3INN5gf@agate.berkeley.edu>
- Date: Mon, 12 Oct 1992 20:59:58 GMT
- Lines: 24
-
- In article <1b4vr3INN5gf@agate.berkeley.edu> avk@hafnium.cchem.berkeley.edu (Tony Konashenok) writes:
- >Yes, this method - cathode protection - is absolutely safe, legal and convenient.
- >It has been used in vessels (esp. tankers) for many years. In a car, the most
- >practical way is to screw magnesium bolts into unused holes, like ones for a
- >trailer hitch, or, if you don't have them, to put magnesium washers under bolts
- >you can easily remove, like those holding the bumper brackets. Once in a while
- >take the ohmmeter and check the resistance between magnesium and body; it should
- >
- I'm no chemist, so let's get this straight. All I have to do is find a couple
- of magnesium bolts or washers, and make sure I have < 1 ohm resistance through
- the body of my car to get this sacrificial cathode protection. What about
- all this crap I've seen about putting a slight DC bias on the cathode which
- can easily be done with this nifty little box for a mere $149.95 or whatever?
-
- Ted Brooks
- ______________________________________________________________________
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