First I have heard about Proseal not holding up. Proseal is a 2 part
polysulfide compound that is supposed to be impervious to alcohol (so far, so
good on mine). The sloshing compound that many RV builders used
(as once supplied by Van's AC) is a different story. I used it and it
started flaking off at once with auto fuel. I had a high pucker
flight identical in every way to the one Jim M. described because of
the sloshing compound clogging the fuel filter (in gascolator). The
proseal has been fine though.
----- Original Message -----
Sent: Friday, December 29, 2006 10:30
AM
Subject: [FlyRotary] Re: Yet another limp
home story
Wendell,
During the construction of my turtleback and fuel tank I used a
combination of West Systems for some parts and Aeropoxy for
others.
If it is any consolation the West Systems seems to be holding up better
than the Aeropoxy so far.
This fuel tank has had auto fuel in it for over 5 years.
It is just recently, since the use of ethanol that I have noticed the
changes in its integrity.
Be sure that any sealer that you use is rated for auto fuel with
alcohol.
The Pro-seal that all the RV guys are using on their aluminum tanks will
not even hold up to auto fuel with ethanol.
Personally I don't like the idea of a sealer because if/when it starts to
deteriorate and gets ingested into the system it will cause the same problem
that I am having right now but maybe even worse.
Jim
Wendell Voto <jwvoto@itlnet.net>
wrote:
Subject: [FlyRotary] Yet another limp home story
Hey James,
I have heard of fuel tanks becoming soft and leaking but not
disintegrating. I was building my Cozy strake tank area with West
Systems epoxy as many boat builders use this including to fuel
tanks. E-mailed West Systems asking if their epoxy would hold up to
alcohol in fuel and they not only answered but called me personally to say
that it is not rated for alcohol. They recommended a Proset system.
I then had to coat my tanks with that epoxy, hope they are right.
Wendell