An idea occurred to me about that: suppose you use vinylester to lay up one or two layers of heavy-duty aluminum foil on the inside of the tank? I've read that vinylester is the most ethanol resistant, and if the layers are aluminum the gas could only attack the seams. (And the seams could be folded over for further protection. This would essentially give you a fiberglass tank with the fuel resistance of an aluminum tank.
Mike Taglieri On Mon, Feb 3, 2020 at 6:00 AM shafferj455js--- via KRnet < krnet@list.krnet.org> wrote: > My experience has been that the alcohol in automotive gasoline, will > dissolve the Vinyl Ester resin I used in my fuel tanks, in my KR -2. > > -----------------------------------------From: "Kayak via KRnet" > To: "KRnet" > Cc: "Kayak" > Sent: Sunday February 2 2020 2:54:42PM > Subject: Re: KR> Auto fuel compatibility > > Interesting experience. I think some tank materials would resist that. > Before I get to the tank part of my project I'd like to incorporate > the > most fuel-indestructible tanks short of metal. (I have Diehl skins to > use) > > Also wonder then what that absorbed moisture does to other > performances of > the fuel such as vapor lock, fuel efficiency, and octane? > > On Sun, Feb 2, 2020 at 1:52 PM Sidney wood via KRnet > wrote: > > > The alcohol in auto fuel dissolved the West System epoxy resin in > my KR-2 > > fuel tanks in the outer wings; started to leak minutes before the > first > > flight. I replaced the fiberglass with welded aluminum tanks. No > further > > problems with fuel. > > I later discovered that alcohol with 6 percent water makes an > excellent > > solvent for cured epoxy. The water would come from humidity in the > air > > mixing with the alcohol in the vented fuel tanks. > > > > Sid Wood > > Tri-gear KR-2 N6242 > > California, MD, USA > > > _______________________________________________ > Search the KRnet Archives at see > > Links: > ------ > [1] https://www.mail-archive.com/krnet@list.krnet.org/. > https://www.mail-archive.com/krnet@list.krnet.org/. > /> Please see LIST RULES and KRnet info at </br<></a><a href= > [2] http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
