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Re: Europa-List: Fuel system disimilar metals

Subject: Re: Europa-List: Fuel system disimilar metals
From: Neville Eyre <Neville@europaaircraft.com>
Date: Fri, 26 Sep 2003 11:40:25

Hi All,
Look inside just about any carb' and you will see brass floats/needle 
valves/jets
screwed into an alloy body.
I have a pair of Weber 40 DCOE's sitting on my bench at home, from a 30 year old
car I am rebuilding. no corrosion.
The chemists of you out there will have some reason why brass and alloy should
not be mixed, but for  simple uneducated people like myself, we just keep 
putting
fuel in and get on with it![ especially as my brain has been pickled recently
by peroxide !]
Cheers,
Nev.

>>> <clevelee@cswebmail.com> 09/25/03 01:21pm >>>

I have real life experience with this one.  When rebuilding my Emeraude I
disassembled the tank fittings after 25 years of service (to other people.)
There were stains on the outside bottom of the aluminum tank.  The pieces fell
apart in my hands with the first twist of the wrench.  I ended up having to
drill out the aluminum block at the base of the tank re-tap and replace the
fittings with a larger fitting that I stepped down.  So. . IMHO the evidence
supports that it is a realistically acceptable practice, but requires the
periodic maintenance suggested.  The problem may come with a future unaware
owner!

Cleve Lee
A198 Mono XS Jabiru 3300
Detroit, MI

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