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Europa-List: Fuel tank leak - another type

Subject: Europa-List: Fuel tank leak - another type
From: A. Buess Aviatik <ykibuess@bluewin.ch>
Date: Sun, 10 Aug 2014 11:14:24
Collective wisdom,
My Europa XS is mostly finished. Two days ago I filled the tank with fuel -
it leaked after I filled in about 40 liters. Not much, but steadily. After
emptying the tank and opening up the access hole on the tank top the culprit
was quickly found: On top of the tunnel there are three distinct
indentations and three more that are smaller. At least one of them must have
a pinhole. The tank leaked exactly where these indentations are. See
attached pictures. It must be a manufacturing error. I am not keen to cut
this tank out and replace it with a new one, but would rather like to repair
it. As it is not a stress crack and as the top of the saddle should not be
exposed to particular stress, I think a repair should be possible. I added
the spray foam bottom support suggested by Bud Yerly (thank you for the
advice !) before filling the tank to minimize deformation stress. 
My question: What adhesive sticks well enough to the tank material (I read
it is medium density polyethylene MDPE) and is fuel resistant? Is redux the
the good choice? Any other advice? Thanks in advance for all suggestions and
shared experiences!
Alfred Buess, Switzerland, Europa XS HB-YKI, Ercoupe 415-E N94804



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