Re: Fuel Tanks

Darrell Daniels <log@...>

That is putting the amout of pressure in the tank that the gas would amount to and see if it leaks. Darrell Daniels

----- Original Message -----
From: "Ron Triano" <rondefly@...>
To: <Q-LIST@...>
Sent: Wednesday, September 13, 2006 8:46 AM
Subject: RE: [Q-LIST] Fuel Tanks

Darrell, if the tank is already built, why don't you do a manometer test on
it to see if it leaks. If it does, cut a hole in the top and do the wet
epoxy layer as was described on this list. The manometer test is very
sensitive and will detect the smallest leak. Then you can do the same test
for pitot and static lines. I had to do that very thing on my main tank and
when I built my aux tank did a wet layup and had no problem passing the
manometer test.


Sonerai: doing runway hopping, soon to go all the way after the short delay.


-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Darrell Daniels
Sent: Wednesday, September 13, 2006 6:00 AM
To: Q-LIST@...
Subject: Re: [Q-LIST] Fuel Tanks

I did not build my airplane so what would be your recommendation Would you
just put the auto fuel in and fly or cut some holes in the top of the tank
and seal it with something. Thanks Darrell
----- Original Message -----
From: <bfarnam@pacbell. <> net>
To: <Q-LIST@yahoogroups. <> com>
Sent: Wednesday, September 13, 2006 1:16 AM
Subject: Re: [Q-LIST] Fuel Tanks

Here's one more data point for you Darrell. My Q200 has been flying for
more than 8 years using auto gas when I am at home and 100LL away on a
trip. My tanks are made of Safe-T-Poxy. I have also had a sample of the
tank material soaking in auto gas with MTBE for about 7 years. There is no
sign of softening or other problem. The main source of leakage that I have
seen is into the fuselage layup which typically had a lot of pinholes.
Those can be sealed several ways during construction. Either sand and
recoat with a fairly heavy layer of epoxy, or some have added another
layer of glass. Mine is sealed with just an extra coating of epoxy. Done
properly, the epoxy tanks won't leak.

Bob F.

----- Original Message ----
From: Darrell Daniels <log@... <> >
To: Q-LIST@yahoogroups. <> com
Sent: Tuesday, September 12, 2006 8:19:03 PM
Subject: [Q-LIST] Fuel Tanks

I have been searching the archives as I am still not satisfied with the
that fuel can leak through you tank and into the foam of you airplane . I
also wan to burn auto fuel . After all of my reading it seems the only
people who have actually done anything is using a slosh coating which is
really practical it a Q but it seems to be the only option is you want to
burn car gas or rid of the possible fuel leak.
The one exception is in the Archive Sam in one entry said something
about using a fuel resistant epoxy but you could not get to all of the
places to sand to easily recoat the entire inside of the tank. Any other
ideas or am I making much to do for nothing Darrell Daniels Tri Q rebuild

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