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Vance, (or other specialists) Anodized aluminum works nicely
if well done. There are pinhole issues with it that
cause some problems, and threading is always an issue. Any thread in aluminum
must be carefully cleaned and filled so that salt water is excluded, as the
salts will cause a buildup and jam SS bolts tight. >> Yep I know the
problem with jammed bolts. Today I assembled some pieces with anti seize paste.
But it looks like it contains copper particles.; wrong?? Emile -----Original Message----- Magnesium corrodes quickly but Zink on a sub with Alu parts seems not usefulto me..Electric leakage; should be avoided. Does anybody know the right way tomeasure it??I prefer to anodise the Alu parts. Looks good, is corrosion resistant andthe ALu is not conductive anymore.Delrin/nylon washers are also a good idea!Emile-----Oorspronkelijk bericht-----Van: owner-personal_submersibles@psubs.org[mailto:owner-personal_submersibles@psubs.org] Namens Vance BradleyVerzonden: zaterdag 12 mei 2012 20:58Aan: personal_submersibles@psubs.orgOnderwerp: Re: [PSUBS-MAILIST] aluminum to steelEvery week? Sounds like a high resistance short to ground. Our zincs lasted2-3 YEARS in and around Norway. For anodes, we used zincs on steel andmagnesium on aluminum. They all lasted a good while unless there was anelectrical problem, which we corrected ASAP.VanceSent from my iPhoneOn May 12, 2012, at 12:14 PM, MerlinSub@t-online.de wrote:> Sounds right. > But in saltwater use you have still to use zink anodes to protect youraluminium.> On Kreideseesub we have to exhange the anodes in salt water (Norway) everyweek.. > > vbr Carsten> > "ojaivalleybeefarm @dslextreme.com" <ojaivalleybeefarm@dslextreme.com>schrieb:>> Hi,>> I've been contemplating using aluminum as a truss typestructure>> to hold one part of my sub. As long as I isolate the two dissimilarmetals>> I should be ok ? Right ? Where the it is bolted together I was goingto>> have a separating "gasket" made out of rubber or a tough plastic. andthen>> where the bolts go through I would have sleeves around the bolts. Soundok>> ? Any comments would be greatly appreciated. thanks.>> >> Brian>> > > > > > ************************************************************************> ************************************************************************> ************************************************************************> The personal submersibles mailing list complies with the US Federal> CAN-SPAM Act of 2003. 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