Darrell, Hope I did not sound rude, did not mean it that way. A manometer is
a very sensitive gauge operating on pressure or vacumn theory. A balloon is
also a pressure test but the only way you know you have a leak is if it
deflates. You can't measure nothing except that it is deflated. With the
manometer you would know how much of a leak you have instantly. I made my
manometer with left over tubing and misc. fittings I had in the shop. If you
type in manometer while in Google you will find several sites describing how
to build one.



Ron



Sonerai and Q200


<http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page11.html>
http://bld01.ipowerweb.com/contentmanagement/websites/rtrianoc/page11.html

-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Darrell Daniels
Sent: Wednesday, September 13, 2006 3:50 PM
To: Q-LIST@...
Subject: Re: [Q-LIST] Fuel Tanks



Ron,
You could just ask me, I took a really quick look at the archives
after your 1st post and gathered manometer test was a pressure test.
Perhaps I am wrong in that assumption if so please tell me or I can order a
back issue of quickie builders #109.
I have always called a pressure test a pressure test.I do want to thank
everyone who replied and as I stated I learned a lot from this string.
I joined this list because I do not know everything and need help.
Thanks again Darrell Daniels Tri Q Rebuild
----- Original Message -----
From: "Ron Triano" <rondefly@rtriano. <mailto:rondefly%40rtriano.com> com>
To: <Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com>
Sent: Wednesday, September 13, 2006 12:14 PM
Subject: RE: [Q-LIST] Fuel Tanks

I guess Darrell doesn't know what a manometer is.



Ron



Sonerai taxi testing


<http://bld01.

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-----Original Message-----
From: Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com

[mailto:Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com] On Behalf
Of

Darrell Daniels
Sent: Wednesday, September 13, 2006 10:02 AM
To: Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com
Subject: Re: [Q-LIST] Fuel Tanks



Thanks Bob,
The leak test is what I was thinking I needed to do. What got me
started on this again was I asked why I could not run auto fuel in a VW
engine and one of the answers was that someone heard that auto fuel would
penetrate the epoxy. I am actual glad for this as I have learned a lot
from
this thread . My thanks Darrell Daniels Tri Q rebuild
----- Original Message -----
From: "Bob Farnam" <bfarnam@pacbell. <mailto:bfarnam%40pacbell.net> net>
To: <Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com>
Sent: Wednesday, September 13, 2006 11:33 AM
Subject: RE: [Q-LIST] Fuel Tanks

If nothing extra was done by the original builder, there is some chance
that
it will leak. If you can't find out what was done during construction,
then
I guess my next step would be to do a long term leakdown test. This can
be
done by sealing up all of the openings except the supply line to the
pump.
Then put an inflated balloon on the supply line and let it sit for 24
hours
to see if any volume is lost. Check all the seal points with soapy water.
If
it is tight, go fly. If not, cut some holes and at least paint on more
epoxy
inside. Unfortunately, the internal baffles mean that you will have to
cut
holes into each section between the baffles. Hope that it passes the
leakdown test. Understand that a tiny amount of leakage into the fuse
foam
won't hurt the foam, which is fuelproof. Only the Styrafoam in the wings
is
at risk of dissolving. I recommend against any sealant except epoxy. I
have
heard (but don't know firsthand) that some of the elastomer sealants are
attacked by auto fuel. Others on this list may know about that.
Incidentally, EZ-Poxy is supposed to be the modern equivalent of
Safe-T-Poxy. My 7.5 gallon aux. tank is made of EZ-Poxy and is fine after
about 7 years.

Good luck!

Bob F.
N200QK
-----Original Message-----
From: Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com

[mailto:Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com]On
Behalf
Of

Darrell Daniels
Sent: Wednesday, September 13, 2006 6:00 AM
To: Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> com
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. <mailto:bfarnam%40pacbell.net> net>
To: <Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> 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.
N200QK


----- Original Message ----
From: Darrell Daniels <log@... <mailto:log%40nemr.net>

<mailto:log%40nemr.net> >

To: Q-LIST@yahoogroups. <mailto:Q-LIST%40yahoogroups.com> 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
idea
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

not
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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