Pure-gas.org/ has hundreds of gas stations by states with pure gas .... !!!! On Nov 16, 2013 8:04 PM, "smwood" <smwood at md.metrocast.net> wrote:
> Vinyl ester has slightly better durability for 100 LL aviation fuel. > Epoxy is satisfactory also for 100 LL. Both resins will dissolve slowly > in the Ethanol that our enlightened government requires to be added to > automotive gasoline. In the presence of water in the Ethanol laced fuel, > the Ethanol is much more active and will dissolve Vinyl ester quite > quickly. (Been there, done that, got the aluminum tanks.) The water is > absorbed by the Ethanol that is stored in vented gas station and aircraft > fuel tanks until it reaches 6% water at saturation. All the chemistry > experts I checked with refer to this condition as a super solvent for Vinyl > ester. > > No mechanical filter will separate the dissolved water from the Ethanol. > > Rubber components in aircraft fuel systems are also attacked by Ethanol. > Worst case is the hardening of the tiny rubber tip on the float needle for > float carburetors. > > Recommend that Ethanol automotive fuel not be used in Vinyl ester and > Epoxy aircraft fuel tanks. > > Sid Wood > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > > ++++++++++++++++++++++++++++++++++++++++++++++++ > > My M-19 is being constructed using the pink board and AeroPoxy laminating > >> resin, but the wet cell wing fuel tanks will use vinylester for fuel >>> resistance. >>> >>> Oscar Zuniga >>> >> > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
