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 Post subject: riveted fuel tank
PostPosted: April 7, 2018, 10:15 am 
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Joined: March 30, 2011, 7:18 am
Posts: 1311
Location: central Arkansas
I had been planning on flanging panels and soldering my fuel tank together, like they used to do with vintage cars. However, this aircraft builder page http://bobhooversblog.blogspot.com/2006 ... -tank.html has detailed information on building a riveted (aluminum or steel) tank using PVA sealer, which is supposed to be resistant to fuel, alcohol, or water. I still need to follow up to make sure the sealer is resistant against the nasties found in common pump gas - both methyl and ethyl alcohol, MTBE and ETBE, MMT, and so forth.

I've never had much luck with any of the old-gas-tank sealers, which always seemed to come off in flakes after a while, but I'm willing to consider there's a difference between sticking to rusty once-galvanized steel and clean etched aluminum. Might be worth an experiment, come to think of it...

more riveted tank pages:
http://www.krnet.org/wingtank/index.htm
http://www.rvten.com/wings6.asp
http://www.my9a.com/wings6.asp


Last edited by TRX on April 7, 2018, 12:31 pm, edited 3 times in total.

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 Post subject: Re: riveted fuel tank
PostPosted: April 7, 2018, 10:57 am 
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Joined: November 9, 2007, 3:40 pm
Posts: 3923
Location: Fort Worth, TX
If you're going riveted, why bother with something that isn't designed for the job?

The real aircraft fuel tank sealant isn't that expensive in the quantity you'd be using.

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 Post subject: Re: riveted fuel tank
PostPosted: April 7, 2018, 12:13 pm 
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Joined: March 30, 2011, 7:18 am
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Location: central Arkansas
Because Real Aircraft Fuel and what might come out of the corner gas pump aren't the same thing at all. Most of the adulterants, oxygenates, and additives in auto gas are forbidden in avgas, so there's no pressing need for the aviation sealer guys to consider them.


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