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Europa-List: aluminium alloys

 
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carl(at)flyers.freeserve.
Guest
PostPosted: Sun Mar 29, 2009 11:14 pm    Post subject: Europa-List: aluminium alloys Reply with quote
Corrosion protection is I would say essentail with the alloy components.
Alodine and paint is the home option - alternately anodising.

You will find that the flap points bonded into the wings will start to
corrode at the bond line leading to possible cracks later on. Replacing
these on a finished Europa is a job I would rather not contemplate.

The paint we used (and we primed with Alodine) is starting to chip and there
is evidence of corrosion (aircraft has been flying for 5 years. These are
treated routinely with waxoyl to keep out the moisture (not pretty but
effective) and then periodically cleaned and painted. Alternatively ACF50
corrosion treatment.

The airflow in these areas will soon strip away any chipped paint exposing
the alloy underneath - it doesent take long for corrosion to set in.

Carl Pattinson
G-LABS

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