Today's Message Index:
----------------------
1. 12:14 AM - Re: fuel seepage (Scott Stearns)
2. 06:36 AM - Re: fuel seepage (F. Tim Yoder)
3. 09:40 AM - Re: fuel seepage (Scott Stearns)
4. 01:55 PM - Re: fuel seepage (Graham Brighton)
5. 10:31 PM - Re: fuel seepage (Scott Stearns)
Message 1
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| Subject: | Re: fuel seepage |
It's not really much a set back, but I'm concerned about the-long term ef
fects knowing that there is fuel in the laminate.- I think I've gotten al
l the fuel seepages plugged and I'll touch up the paint so you can't tell.
- I have some test samples soaking in fuel and it doesn't seem to be havi
ng any effect.
-
This is just one of a number of little things I'm fixing while the landing
gear of off and being bent to the correct angle.
-
Scott
--- On Wed, 10/20/10, Graham Brighton <gbrighton@skymesh.com.au> wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Re: KIS-List: fuel seepage
Scott,
-------------- No advice here ...but just to sa
y ...sorry hear about the set back ...grrr ...!!!
-
Graham .
-
-
.
-
.
----- Original Message -----
From: Scott Stearns
Sent: Wednesday, October 20, 2010 10:56 AM
Subject: Re: KIS-List: fuel seepage
Hi Larry,
-
The seepage started fairly soon after I put a significant amount of fuel in
it.- After playing with the scrap laminate and fuel it looks like it wou
ld only take a small area to be exposed which is probably what's happening.
-
-
Scott
--- On Tue, 10/19/10, Larry David <lgdavid@roadrunner.com> wrote:
From: Larry David <lgdavid@roadrunner.com>
Subject: Re: KIS-List: fuel seepage
Scott, When I was having my gasohol problems, you gave me the Jeffco 9700 i
dea and it solved my leakeage problem.- I am surprised that fuel is getti
ng past the Jeffco 9700.--Is it possible that somehing has happened to
the wing during your test flights?--Something seems to have changed.-
Larry
----- Original Message -----
From: Richard Trickel
Sent: Tuesday, October 19, 2010 10:41 AM
Subject: Re: KIS-List: fuel seepage
Scott I should have asked what the foam core is.- The fact that the carbo
n cloth is porus is understandable but I was always under the belief that c
losed cell foam would not pass the fuel.- This is one of the reason I use
d it..- I would definately do a pressure check on the wing based on your
discription of seapage.- Fuel is funny though.- Those fuel molecules ar
e sneaky little bastards.
--- On Tue, 10/19/10, Scott Stearns <sstearns2@yahoo.com> wrote:
From: Scott Stearns <sstearns2@yahoo.com>
Subject: Re: KIS-List: fuel seepage
Hi Rich,
-
I have a laminate that is just like the wing laminate.- I poured a pool o
f fuel on top of it and it readily soaked thru the laminate and through the
foam core.- The carbon was somewhat low resin content and I didn't use g
lue sheet in the wing skins.
-
I also had areas in the wingtip where fuel was seeping out of the wing skin
-laminate.- Also some of the areas around the-screws that hold the lo
wer wing root fairing on are pretty badly blue stained.
-
Scott
-
--- On Tue, 10/19/10, Richard Trickel <richard_trickel@yahoo.com> wrote:
From: Richard Trickel <richard_trickel@yahoo.com>
Subject: Re: KIS-List: fuel seepage
Scott
If the fuel stains are around the aileron screws I think your problem may b
e fuel coming out of the cap.-I also had this problem and found that leav
ing the tanks a little low solved the problem.- During flight you cannot
see the fuel coming out but it does.--Check your fuel caps.- -I dou
bt very much that fuel would seep that far through the foam core.- The co
re is closed cell so the only way fuel could travel is along the skin/core
bond.- Have you tested the tank for air leakage with a monometer.- I wo
uld start there and take it step by step.
Rich
--- On Tue, 10/19/10, Scott Stearns <sstearns2@yahoo.com> wrote:
From: Scott Stearns <sstearns2@yahoo.com>
Subject: KIS-List: fuel seepage
My right wing has a lot of small places where fuel is seeping out of the la
minate.- For instance some of the screws that hold the aileron on-have
blue stains around them.- It's pretty clear that fuel has gotten into the
wing skin sandwich panel and is wicking through laminate and foam.- The
left wing doesn't have any fuel seeps.
-
The top right wing skin also has a lot of the weave showing through which m
ight be related to the fuel getting to the panel.
-
I'm a bit surprised since the fuel tanks have two coat of the jeffco fuel s
ealer in them.- I played around with some sandwich panel that is the same
material as the wing skin (but without fuel sealer)-and fuel soaks throu
gh the laminate and through the foam core easily.
-
Anyone have any thoughts?-- Should I worry or is this common?-
-
Scott
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Message 2
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| Subject: | Re: fuel seepage |
Scott,
How did you plug the seeps?
Tim
----- Original Message -----
From: Scott Stearns
To: kis-list@matronics.com
Sent: Thursday, October 21, 2010 12:12 AM
Subject: Re: KIS-List: fuel seepage
It's not really much a set back, but I'm concerned about the
long term effects knowing that there is fuel in the laminate. I think
I've gotten all the fuel seepages plugged and I'll touch up the paint so
you can't tell. I have some test samples soaking in fuel and it doesn't
seem to be having any effect.
This is just one of a number of little things I'm fixing while
the landing gear of off and being bent to the correct angle.
Scott
--- On Wed, 10/20/10, Graham Brighton <gbrighton@skymesh.com.au>
wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Wednesday, October 20, 2010, 4:43 AM
Scott,
No advice here ...but just to say ...sorry hear
about the set back ...grrr ...!!!
Graham .
.
.
----- Original Message -----
From: Scott Stearns
To: kis-list@matronics.com
Sent: Wednesday, October 20, 2010 10:56 AM
Subject: Re: KIS-List: fuel seepage
Hi Larry,
The seepage started fairly soon after I put a
significant amount of fuel in it. After playing with the scrap laminate
and fuel it looks like it would only take a small area to be exposed
which is probably what's happening.
Scott
--- On Tue, 10/19/10, Larry David
<lgdavid@roadrunner.com> wrote:
From: Larry David <lgdavid@roadrunner.com>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 4:38 PM
Scott, When I was having my gasohol problems, you
gave me the Jeffco 9700 idea and it solved my leakeage problem. I am
surprised that fuel is getting past the Jeffco 9700. Is it possible
that somehing has happened to the wing during your test flights?
Something seems to have changed. Larry
----- Original Message -----
From: Richard Trickel
To: kis-list@matronics.com
Sent: Tuesday, October 19, 2010 10:41 AM
Subject: Re: KIS-List: fuel seepage
Scott I should have asked what the foam core
is. The fact that the carbon cloth is porus is understandable but I was
always under the belief that closed cell foam would not pass the fuel.
This is one of the reason I used it.. I would definately do a pressure
check on the wing based on your discription of seapage. Fuel is funny
though. Those fuel molecules are sneaky little bastards.
--- On Tue, 10/19/10, Scott Stearns
<sstearns2@yahoo.com> wrote:
From: Scott Stearns <sstearns2@yahoo.com>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 4:02 PM
Hi Rich,
I have a laminate that is just like the
wing laminate. I poured a pool of fuel on top of it and it readily
soaked thru the laminate and through the foam core. The carbon was
somewhat low resin content and I didn't use glue sheet in the wing
skins.
I also had areas in the wingtip where
fuel was seeping out of the wing skin laminate. Also some of the areas
around the screws that hold the lower wing root fairing on are pretty
badly blue stained.
Scott
--- On Tue, 10/19/10, Richard Trickel
<richard_trickel@yahoo.com> wrote:
From: Richard Trickel
<richard_trickel@yahoo.com>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 5:27 AM
Scott
If the fuel stains are around the
aileron screws I think your problem may be fuel coming out of the cap. I
also had this problem and found that leaving the tanks a little low
solved the problem. During flight you cannot see the fuel coming out
but it does. Check your fuel caps. I doubt very much that fuel would
seep that far through the foam core. The core is closed cell so the
only way fuel could travel is along the skin/core bond. Have you tested
the tank for air leakage with a monometer. I would start there and take
it step by step.
Rich
--- On Tue, 10/19/10, Scott Stearns
<sstearns2@yahoo.com> wrote:
From: Scott Stearns
<sstearns2@yahoo.com>
Subject: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 5:01 AM
My right wing has a lot of small places
where fuel is seeping out of the laminate. For instance some of the
screws that hold the aileron on have blue stains around them. It's
pretty clear that fuel has gotten into the wing skin sandwich panel and
is wicking through laminate and foam. The left wing doesn't have any
fuel seeps.
The top right wing skin also has a lot
of the weave showing through which might be related to the fuel getting
to the panel.
I'm a bit surprised since the fuel tanks
have two coat of the jeffco fuel sealer in them. I played around with
some sandwich panel that is the same material as the wing skin (but
without fuel sealer) and fuel soaks through the laminate and through the
foam core easily.
Anyone have any thoughts? Should I
worry or is this common?
Scott
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Message 3
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| Subject: | Re: fuel seepage |
I pumped all the fuel to the other side and the just used epoxy to paint ov
er the areas.- I drilled oversize some of the screw-holes and filled th
em with flox and redirlled the hole.
-
Scott
--- On Thu, 10/21/10, F. Tim Yoder <ftyoder@yoderbuilt.com> wrote:
From: F. Tim Yoder <ftyoder@yoderbuilt.com>
Subject: Re: KIS-List: fuel seepage
Scott,
-
How did you plug the seeps?
-
Tim
----- Original Message -----
From: Scott Stearns
Sent: Thursday, October 21, 2010 12:12 AM
Subject: Re: KIS-List: fuel seepage
It's not really much a set back, but I'm concerned about the-long term ef
fects knowing that there is fuel in the laminate.- I think I've gotten al
l the fuel seepages plugged and I'll touch up the paint so you can't tell.
- I have some test samples soaking in fuel and it doesn't seem to be havi
ng any effect.
-
This is just one of a number of little things I'm fixing while the landing
gear of off and being bent to the correct angle.
-
Scott
--- On Wed, 10/20/10, Graham Brighton <gbrighton@skymesh.com.au> wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Re: KIS-List: fuel seepage
Scott,
-------------- No advice here ...but just to sa
y ...sorry hear about the set back ...grrr ...!!!
-
Graham .
-
-
.
-
.
----- Original Message -----
From: Scott Stearns
Sent: Wednesday, October 20, 2010 10:56 AM
Subject: Re: KIS-List: fuel seepage
Hi Larry,
-
The seepage started fairly soon after I put a significant amount of fuel in
it.- After playing with the scrap laminate and fuel it looks like it wou
ld only take a small area to be exposed which is probably what's happening.
-
-
Scott
--- On Tue, 10/19/10, Larry David <lgdavid@roadrunner.com> wrote:
From: Larry David <lgdavid@roadrunner.com>
Subject: Re: KIS-List: fuel seepage
Scott, When I was having my gasohol problems, you gave me the Jeffco 9700 i
dea and it solved my leakeage problem.- I am surprised that fuel is getti
ng past the Jeffco 9700.--Is it possible that somehing has happened to
the wing during your test flights?--Something seems to have changed.-
Larry
----- Original Message -----
From: Richard Trickel
Sent: Tuesday, October 19, 2010 10:41 AM
Subject: Re: KIS-List: fuel seepage
Scott I should have asked what the foam core is.- The fact that the carbo
n cloth is porus is understandable but I was always under the belief that c
losed cell foam would not pass the fuel.- This is one of the reason I use
d it..- I would definately do a pressure check on the wing based on your
discription of seapage.- Fuel is funny though.- Those fuel molecules ar
e sneaky little bastards.
--- On Tue, 10/19/10, Scott Stearns <sstearns2@yahoo.com> wrote:
From: Scott Stearns <sstearns2@yahoo.com>
Subject: Re: KIS-List: fuel seepage
Hi Rich,
-
I have a laminate that is just like the wing laminate.- I poured a pool o
f fuel on top of it and it readily soaked thru the laminate and through the
foam core.- The carbon was somewhat low resin content and I didn't use g
lue sheet in the wing skins.
-
I also had areas in the wingtip where fuel was seeping out of the wing skin
-laminate.- Also some of the areas around the-screws that hold the lo
wer wing root fairing on are pretty badly blue stained.
-
Scott
-
--- On Tue, 10/19/10, Richard Trickel <richard_trickel@yahoo.com> wrote:
From: Richard Trickel <richard_trickel@yahoo.com>
Subject: Re: KIS-List: fuel seepage
Scott
If the fuel stains are around the aileron screws I think your problem may b
e fuel coming out of the cap.-I also had this problem and found that leav
ing the tanks a little low solved the problem.- During flight you cannot
see the fuel coming out but it does.--Check your fuel caps.- -I dou
bt very much that fuel would seep that far through the foam core.- The co
re is closed cell so the only way fuel could travel is along the skin/core
bond.- Have you tested the tank for air leakage with a monometer.- I wo
uld start there and take it step by step.
Rich
--- On Tue, 10/19/10, Scott Stearns <sstearns2@yahoo.com> wrote:
From: Scott Stearns <sstearns2@yahoo.com>
Subject: KIS-List: fuel seepage
My right wing has a lot of small places where fuel is seeping out of the la
minate.- For instance some of the screws that hold the aileron on-have
blue stains around them.- It's pretty clear that fuel has gotten into the
wing skin sandwich panel and is wicking through laminate and foam.- The
left wing doesn't have any fuel seeps.
-
The top right wing skin also has a lot of the weave showing through which m
ight be related to the fuel getting to the panel.
-
I'm a bit surprised since the fuel tanks have two coat of the jeffco fuel s
ealer in them.- I played around with some sandwich panel that is the same
material as the wing skin (but without fuel sealer)-and fuel soaks throu
gh the laminate and through the foam core easily.
-
Anyone have any thoughts?-- Should I worry or is this common?-
-
Scott
=nofollow target=_blank>http://www.matronics.com/Navigator?KIS-List
et=_blank>http://forums.matronics.com
llow target=_blank>http://www.matronics.com/contribution
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et=_blank>http://forums.matronics.com
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Message 4
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| Subject: | Re: fuel seepage |
Err ... Scott ..so how did u get insde the tank to seal the leaks ...or
..or ....confused ....?
Graham
.
----- Original Message -----
From: Scott Stearns
To: kis-list@matronics.com
Sent: Friday, October 22, 2010 3:36 AM
Subject: Re: KIS-List: fuel seepage
I pumped all the fuel to the other side and the just used epoxy
to paint over the areas. I drilled oversize some of the screw holes and
filled them with flox and redirlled the hole.
Scott
--- On Thu, 10/21/10, F. Tim Yoder <ftyoder@yoderbuilt.com>
wrote:
From: F. Tim Yoder <ftyoder@yoderbuilt.com>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Thursday, October 21, 2010, 6:30 AM
Scott,
How did you plug the seeps?
Tim
----- Original Message -----
From: Scott Stearns
To: kis-list@matronics.com
Sent: Thursday, October 21, 2010 12:12 AM
Subject: Re: KIS-List: fuel seepage
It's not really much a set back, but I'm concerned
about the long term effects knowing that there is fuel in the laminate.
I think I've gotten all the fuel seepages plugged and I'll touch up the
paint so you can't tell. I have some test samples soaking in fuel and
it doesn't seem to be having any effect.
This is just one of a number of little things I'm
fixing while the landing gear of off and being bent to the correct
angle.
Scott
--- On Wed, 10/20/10, Graham Brighton
<gbrighton@skymesh.com.au> wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Wednesday, October 20, 2010, 4:43 AM
Scott,
No advice here ...but just to say
...sorry hear about the set back ...grrr ...!!!
Graham .
.
.
----- Original Message -----
From: Scott Stearns
To: kis-list@matronics.com
Sent: Wednesday, October 20, 2010 10:56 AM
Subject: Re: KIS-List: fuel seepage
Hi Larry,
The seepage started fairly soon after I put
a significant amount of fuel in it. After playing with the scrap
laminate and fuel it looks like it would only take a small area to be
exposed which is probably what's happening.
Scott
--- On Tue, 10/19/10, Larry David
<lgdavid@roadrunner.com> wrote:
From: Larry David <lgdavid@roadrunner.com>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 4:38 PM
Scott, When I was having my gasohol
problems, you gave me the Jeffco 9700 idea and it solved my leakeage
problem. I am surprised that fuel is getting past the Jeffco 9700. Is
it possible that somehing has happened to the wing during your test
flights? Something seems to have changed. Larry
----- Original Message -----
From: Richard Trickel
To: kis-list@matronics.com
Sent: Tuesday, October 19, 2010 10:41 AM
Subject: Re: KIS-List: fuel seepage
Scott I should have asked what the foam
core is. The fact that the carbon cloth is porus is understandable but
I was always under the belief that closed cell foam would not pass the
fuel. This is one of the reason I used it.. I would definately do a
pressure check on the wing based on your discription of seapage. Fuel
is funny though. Those fuel molecules are sneaky little bastards.
--- On Tue, 10/19/10, Scott Stearns
<sstearns2@yahoo.com> wrote:
From: Scott Stearns
<sstearns2@yahoo.com>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 4:02 PM
Hi Rich,
I have a laminate that is just like the
wing laminate. I poured a pool of fuel on top of it and it readily
soaked thru the laminate and through the foam core. The carbon was
somewhat low resin content and I didn't use glue sheet in the wing
skins.
I also had areas in the wingtip where
fuel was seeping out of the wing skin laminate. Also some of the areas
around the screws that hold the lower wing root fairing on are pretty
badly blue stained.
Scott
--- On Tue, 10/19/10, Richard Trickel
<richard_trickel@yahoo.com> wrote:
From: Richard Trickel
<richard_trickel@yahoo.com>
Subject: Re: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 5:27 AM
Scott
If the fuel stains are around the
aileron screws I think your problem may be fuel coming out of the cap. I
also had this problem and found that leaving the tanks a little low
solved the problem. During flight you cannot see the fuel coming out
but it does. Check your fuel caps. I doubt very much that fuel would
seep that far through the foam core. The core is closed cell so the
only way fuel could travel is along the skin/core bond. Have you tested
the tank for air leakage with a monometer. I would start there and take
it step by step.
Rich
--- On Tue, 10/19/10, Scott Stearns
<sstearns2@yahoo.com> wrote:
From: Scott Stearns
<sstearns2@yahoo.com>
Subject: KIS-List: fuel seepage
To: kis-list@matronics.com
Date: Tuesday, October 19, 2010, 5:01 AM
My right wing has a lot of small places
where fuel is seeping out of the laminate. For instance some of the
screws that hold the aileron on have blue stains around them. It's
pretty clear that fuel has gotten into the wing skin sandwich panel and
is wicking through laminate and foam. The left wing doesn't have any
fuel seeps.
The top right wing skin also has a lot
of the weave showing through which might be related to the fuel getting
to the panel.
I'm a bit surprised since the fuel tanks
have two coat of the jeffco fuel sealer in them. I played around with
some sandwich panel that is the same material as the wing skin (but
without fuel sealer) and fuel soaks through the laminate and through the
foam core easily.
Anyone have any thoughts? Should I
worry or is this common?
Scott
=nofollow target=_blank>http://www.matronics.com/Navigator?KIS-List
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| Subject: | Re: fuel seepage |
oh sorry... I haven't thought about sealing the insides of the tanks yet.
- I was referring to sealing the seeps on the outside.-
-
After playing with the fuel and composite laminates I have to think that mo
st composite kit planes have fuel in the core to some degree even if its no
t apparent-from the outside.
-
Scott
--- On Thu, 10/21/10, Graham Brighton <gbrighton@skymesh.com.au> wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Re: KIS-List: fuel seepage
Err ... Scott ..so how did u get insde the tank to seal the leaks ...or ..o
r ....confused ....?
-
Graham
-
.
----- Original Message -----
From: Scott Stearns
Sent: Friday, October 22, 2010 3:36 AM
Subject: Re: KIS-List: fuel seepage
I pumped all the fuel to the other side and the just used epoxy to paint ov
er the areas.- I drilled oversize some of the screw-holes and filled th
em with flox and redirlled the hole.
-
Scott
--- On Thu, 10/21/10, F. Tim Yoder <ftyoder@yoderbuilt.com> wrote:
From: F. Tim Yoder <ftyoder@yoderbuilt.com>
Subject: Re: KIS-List: fuel seepage
Scott,
-
How did you plug the seeps?
-
Tim
----- Original Message -----
From: Scott Stearns
Sent: Thursday, October 21, 2010 12:12 AM
Subject: Re: KIS-List: fuel seepage
It's not really much a set back, but I'm concerned about the-long term ef
fects knowing that there is fuel in the laminate.- I think I've gotten al
l the fuel seepages plugged and I'll touch up the paint so you can't tell.
- I have some test samples soaking in fuel and it doesn't seem to be havi
ng any effect.
-
This is just one of a number of little things I'm fixing while the landing
gear of off and being bent to the correct angle.
-
Scott
--- On Wed, 10/20/10, Graham Brighton <gbrighton@skymesh.com.au> wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Re: KIS-List: fuel seepage
Scott,
-------------- No advice here ...but just to sa
y ...sorry hear about the set back ...grrr ...!!!
-
Graham .
-
-
.
-
.
----- Original Message -----
From: Scott Stearns
Sent: Wednesday, October 20, 2010 10:56 AM
Subject: Re: KIS-List: fuel seepage
Hi Larry,
-
The seepage started fairly soon after I put a significant amount of fuel in
it.- After playing with the scrap laminate and fuel it looks like it wou
ld only take a small area to be exposed which is probably what's happening.
-
-
Scott
--- On Tue, 10/19/10, Larry David <lgdavid@roadrunner.com> wrote:
From: Larry David <lgdavid@roadrunner.com>
Subject: Re: KIS-List: fuel seepage
Scott, When I was having my gasohol problems, you gave me the Jeffco 9700 i
dea and it solved my leakeage problem.- I am surprised that fuel is getti
ng past the Jeffco 9700.--Is it possible that somehing has happened to
the wing during your test flights?--Something seems to have changed.-
Larry
----- Original Message -----
From: Richard Trickel
Sent: Tuesday, October 19, 2010 10:41 AM
Subject: Re: KIS-List: fuel seepage
Scott I should have asked what the foam core is.- The fact that the carbo
n cloth is porus is understandable but I was always under the belief that c
losed cell foam would not pass the fuel.- This is one of the reason I use
d it..- I would definately do a pressure check on the wing based on your
discription of seapage.- Fuel is funny though.- Those fuel molecules ar
e sneaky little bastards.
--- On Tue, 10/19/10, Scott Stearns <sstearns2@yahoo.com> wrote:
From: Scott Stearns <sstearns2@yahoo.com>
Subject: Re: KIS-List: fuel seepage
Hi Rich,
-
I have a laminate that is just like the wing laminate.- I poured a pool o
f fuel on top of it and it readily soaked thru the laminate and through the
foam core.- The carbon was somewhat low resin content and I didn't use g
lue sheet in the wing skins.
-
I also had areas in the wingtip where fuel was seeping out of the wing skin
-laminate.- Also some of the areas around the-screws that hold the lo
wer wing root fairing on are pretty badly blue stained.
-
Scott
-
--- On Tue, 10/19/10, Richard Trickel <richard_trickel@yahoo.com> wrote:
From: Richard Trickel <richard_trickel@yahoo.com>
Subject: Re: KIS-List: fuel seepage
Scott
If the fuel stains are around the aileron screws I think your problem may b
e fuel coming out of the cap.-I also had this problem and found that leav
ing the tanks a little low solved the problem.- During flight you cannot
see the fuel coming out but it does.--Check your fuel caps.- -I dou
bt very much that fuel would seep that far through the foam core.- The co
re is closed cell so the only way fuel could travel is along the skin/core
bond.- Have you tested the tank for air leakage with a monometer.- I wo
uld start there and take it step by step.
Rich
--- On Tue, 10/19/10, Scott Stearns <sstearns2@yahoo.com> wrote:
From: Scott Stearns <sstearns2@yahoo.com>
Subject: KIS-List: fuel seepage
My right wing has a lot of small places where fuel is seeping out of the la
minate.- For instance some of the screws that hold the aileron on-have
blue stains around them.- It's pretty clear that fuel has gotten into the
wing skin sandwich panel and is wicking through laminate and foam.- The
left wing doesn't have any fuel seeps.
-
The top right wing skin also has a lot of the weave showing through which m
ight be related to the fuel getting to the panel.
-
I'm a bit surprised since the fuel tanks have two coat of the jeffco fuel s
ealer in them.- I played around with some sandwich panel that is the same
material as the wing skin (but without fuel sealer)-and fuel soaks throu
gh the laminate and through the foam core easily.
-
Anyone have any thoughts?-- Should I worry or is this common?-
-
Scott
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