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Re: Europa-List: Re: Fuel tank installation without bonding it in

Subject: Re: Europa-List: Re: Fuel tank installation without bonding it in
From: William Daniell <wdaniell@etb.net.co>
Date: Wed, 23 Dec 2009 08:05:09

Jan

is there any suggestion for those of us who have already bonded in as 
per the manual?

...And to take the opportunity also to say Happy Christmas to all and 
thanks for all the help in 2009.

Will

Jan de Jong wrote:
> 2.
> The gaseous tank treatment introduced to prevent swelling causes epoxy
> to bond to the tank material.
> Thermal expansion rate difference is the most likely cause for tearing
> tanks.
> Prescription:
> Install in accordance with the manual but with a permanent release film
> between layup and tank.
> No other measures are necessary and triboelectrics are not an issue.
>
> (
> Googling gives a linear thermal expansion coefficient difference between
> glass reinforced epoxy and polyethylene in the order of 1 in 10000 per
> degree C.
> That would be 1 mm per 20 cm for 50 degree C.
> )
>
> Cheers,
> Jan de Jong
>
>
> _



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