RE: [PSUBS-MAILIST] aluminum to steel

["Emile van Essen" <emile@airesearch.nl>]

Magnesium corrodes quickly but Zink on a sub with Alu parts seems not useful
to me..

Electric leakage; should be avoided. Does anybody know the right way to
measure it??

I prefer to anodise the Alu parts. Looks good, is corrosion resistant and
the 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 Bradley
Verzonden: zaterdag 12 mei 2012 20:58
Aan: personal_submersibles@psubs.org
Onderwerp: Re: [PSUBS-MAILIST] aluminum to steel

Every week? Sounds like a high resistance short to ground. Our zincs lasted
2-3 YEARS in and around Norway. For anodes, we used zincs on steel and
magnesium on aluminum. They all lasted a good while unless there was an
electrical problem, which we corrected ASAP.
Vance

Sent from my iPhone

On 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 your
aluminium.
> On Kreideseesub we have to exhange the anodes in salt water (Norway) every
week.. 
> 
> vbr Carsten
> 
> "ojaivalleybeefarm @dslextreme.com" <ojaivalleybeefarm@dslextreme.com>
schrieb:
>> Hi,
>>           I've been contemplating using aluminum as a truss type
structure
>> to hold one part of my sub.  As long as I isolate the two dissimilar
metals
>> I should be ok ?  Right ?   Where the it is bolted together I was going
to
>> have a separating "gasket" made out of rubber or a tough plastic. and
then
>> where the bolts go through I would have sleeves around the bolts.  Sound
ok
>> ?  Any comments would be greatly appreciated.  thanks.
>> 
>> Brian
>> 
> 
> 
> 
> 
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