Today's Message Index:
----------------------
1. 06:53 AM - Fuel tank leak (barrynorman@comcast.net)
2. 06:55 AM - Fuel tank leak (barrynorman@comcast.net)
3. 07:37 AM - Re: Fuel tank leak (David Weaver)
4. 08:09 AM - Re: Fuel tank leak (barrynorman@comcast.net)
5. 08:28 AM - Re: Fuel tank leak (sonja.englert@juno.com)
6. 10:21 AM - Re: Fuel tank leak (David Weaver)
Message 1
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I finally go the wings off the plane to take a closer look at the leaks. Be
fore taking the end plate off the right tank, I put fuel in it while it was
setting on some saw horses to see exactly were it was leaking from. It app
ears to be coming out at the top of the spar where the skin to the tank mee
ts the spar. This kinda surprised me but was explained when I took the end
plate off. It appears that the=C2-Jeffco fuel tank sealer released in a s
mall=C2-spot on the fiberglass angle near the top of the wing. This must
have started the leak. Jim's suggestion to build a fillet looks like it wil
l fix this problem.=C2-
I noticed that the area in the tank where the flap return spring bracket co
mes through had cracked and the Jeffco, micro/epoxy mix built up around it
and was falling apart. This means the spar was exposed to fuel in a half do
llar sized area. I checked the bracket and it was tight and rigid and the a
rea of the spar exposed to fuels seemed unaffected. It's still hard and app
ears normal. There appeared to be no leakage through to the other side wher
e the spring attaches. BTW, these tanks were factory built by Skystar.
=C2-
I noticed that the Jeffco is over $500 for a 3 gallon kit which is outrageo
us. They don't offer a smaller kit.=C2-There is another product being sol
d called Bill Hirsh gas tank sealer that is much cheaper and claims resista
nce to alcohol. Has anyone had experience with this product. Will it work w
ith Jeffco?
=C2-
Thanks,
Barry
Message 2
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I finally go the wings off the plane to take a closer look at the leaks. Be
fore taking the end plate off the right tank, I put fuel in it while it was
setting on some saw horses to see exactly were it was leaking from. It app
ears to be coming out at the top of the spar where the skin to the tank mee
ts the spar. This kinda surprised me but was explained when I took the end
plate off. It appears that the=C2-Jeffco fuel tank sealer released in a s
mall=C2-spot on the fiberglass angle near the top of the wing. This must
have started the leak. Jims suggestion to build a fillet looks like it will
fix this problem.=C2-
I noticed that the area in the tank where the flap return spring bracket co
mes through had cracked and the Jeffco, micro/epoxy mix built up around it
and was falling apart. This means the spar was exposed to fuel in a half do
llar sized area. I checked the bracket and it was tight and rigid and the a
rea of the spar exposed to fuels seemed unaffected. It's still hard and app
ears normal. BTW, these tanks were factory built by Skystar.
=C2-
I noticed that the Jeffco is over $500 for a 3 gallon kit which is outrageo
us. There is another product being sold called Bill Hirsh gas tank sealer t
hat is much cheaper and claims resistance to alcohol. Has anyone had experi
ence with this product.
=C2-
Thanks,
Barry
Message 3
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| Subject: | Re: Fuel tank leak |
You should never attempt to overlap Jeffco over a poly sulfide sealant.-
Jeffco is essentially inert when cured.- There should be no problem with
over coating Jeffco with a poly sulfide.- The fuel tank end plate closure
sealant is a typical example.- I went from a poly sulfide wing tank seal
ant to Jeffco a few years back....an awful job scrubbing out the wing tanks
with MEK (required about 12 gallons).- The Jeffco wing tank sealant-ha
s held up well and was when I last checked used by Lancaire.
Dave Weaver
--- On Mon, 7/16/12, barrynorman@comcast.net <barrynorman@comcast.net> wrot
e:
From: barrynorman@comcast.net <barrynorman@comcast.net>
Subject: Pulsar-List: Fuel tank leak
#yiv490300858 p {margin:0;}
I finally go the wings off the plane to take a closer look at the leaks. Be
fore taking the end plate off the right tank, I put fuel in it while it was
setting on some saw horses to see exactly were it was leaking from. It app
ears to be coming out at the top of the spar where the skin to the tank mee
ts the spar. This kinda surprised me but was explained when I took the end
plate off. It appears that the-Jeffco fuel tank sealer released in a smal
l-spot on the fiberglass angle near the top of the wing. This must have s
tarted the leak. Jim's suggestion to build a fillet looks like it will fix
this problem.-
I noticed that the area in the tank where the flap return spring bracket co
mes through had cracked and the Jeffco, micro/epoxy mix built up around it
and was falling apart. This means the spar was exposed to fuel in a half do
llar sized area. I checked the bracket and it was tight and rigid and the a
rea of the spar exposed to fuels seemed unaffected. It's still hard and app
ears normal. There appeared to be no leakage through to the other side wher
e the spring attaches. BTW, these tanks were factory built by Skystar.
-
I noticed that the Jeffco is over $500 for a 3 gallon kit which is outrageo
us. They don't offer a smaller kit.-There is another product being sold c
alled Bill Hirsh gas tank sealer that is much cheaper and claims resistance
to alcohol. Has anyone had experience with this product. Will it work with
Jeffco?
-
Thanks,
Barry
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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3D
Message 4
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| Subject: | Re: Fuel tank leak |
The tanks are sealed with Jeffco from the factory. From what I read the Bil
l Hirsh stuff stays flexible whereas I've seen the Jeffco crack where flexe
d.
Barry
----- Original Message -----
From: "David Weaver" <mortweaver@sbcglobal.net>
Sent: Monday, July 16, 2012 10:37:09 AM
Subject: Re: Pulsar-List: Fuel tank leak
You should never attempt to overlap Jeffco over a poly sulfide sealant.=C2
- Jeffco is essentially inert when cured.=C2- There should be no proble
m with over coating Jeffco with a poly sulfide.=C2- The fuel tank end pla
te closure sealant is a typical example.=C2- I went from a poly sulfide w
ing tank sealant to Jeffco a few years back....an awful job scrubbing out t
he wing tanks with MEK (required about 12 gallons).=C2- The Jeffco wing t
ank sealant=C2-has held up well and was when I last checked used by Lanca
ire.
Dave Weaver
--- On Mon, 7/16/12, barrynorman@comcast.net <barrynorman@comcast.net> wrot
e:
From: barrynorman@comcast.net <barrynorman@comcast.net>
Subject: Pulsar-List: Fuel tank leak
I finally go the wings off the plane to take a closer look at the leaks. Be
fore taking the end plate off the right tank, I put fuel in it while it was
setting on some saw horses to see exactly were it was leaking from. It app
ears to be coming out at the top of the spar where the skin to the tank mee
ts the spar. This kinda surprised me but was explained when I took the end
plate off. It appears that the=C2- Jeffco fuel tank sealer released in a
small=C2-spot on the fiberglass angle near the top of the wing. This must
have started the leak. Jim's suggestion to build a fillet looks like it wi
ll fix this problem.=C2-
I noticed that the area in the tank where the flap return spring bracket co
mes through had cracked and the Jeffco, micro/epoxy mix built up around it
and was falling apart. This means the spar was exposed to fuel in a half do
llar sized area. I checked the bracket and it was tight and rigid and the a
rea of the spar exposed to fuels seemed unaffected. It's still hard and app
ears normal. There appeared to be no leakage through to the other side wher
e the spring attaches. BTW, these tanks were factory built by Skystar.
=C2-
I noticed that the Jeffco is over $500 for a 3 gallon kit which is outrageo
us. They don't offer a smaller kit.=C2-There is another product being sol
d called Bill Hirsh gas tank sealer that is much cheaper and claims resista
nce to alcohol. Has anyone had experience with this product. Will it work w
ith Jeffco?
=C2-
Thanks,
Barry 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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==
Message 5
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| Subject: | Re: Fuel tank leak |
Hello Everyone,
For those of you who are also interested in motorgliders, I have posted another
video of the motorglider fly-in in Minden, NV I attended a few days ago. Here
is the link:
http://youtu.be/1Er7l602ft0
Sonja
Do not archive
____________________________________________________________
Woman is 57 But Looks 27
Mom publishes simple facelift trick that angered doctors...
http://thirdpartyoffers.juno.com/TGL3131/500432fb64b9232fb0550st53duc
Message 6
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| Subject: | Re: Fuel tank leak |
Jeffco, although rated for corrosive chemicals such as acids,-has a-ver
y critical mixing ratio requirement.- Jeffco carries a warning with regar
d to following mixing instructions as it becomes less flexible with the use
of more hardener.- It requires two coats as gasses released during cure
process-will cause bubbles and leave pin holes in the curred coating.-
Jeffco is very easy to apply to large areas as it has superior wicking char
acteristic compared to a poly sulfide sealant.- My header tank was a retr
ofit following completion of kit construction and was sealed with PR - 1750
.- PR - 1750 Poly Sulfide has good flexibility and is rated for alcohol.
- It-is also a good close-out plate sealant.
-
Dave Weaver
--- On Mon, 7/16/12, barrynorman@comcast.net <barrynorman@comcast.net> wrot
e:
From: barrynorman@comcast.net <barrynorman@comcast.net>
Subject: Re: Pulsar-List: Fuel tank leak
#yiv99009826 p {margin:0;}
The tanks are sealed with Jeffco from the factory. From what I read the Bil
l Hirsh stuff stays flexible whereas I've seen the Jeffco crack where flexe
d.
-
Barry
From: "David Weaver" <mortweaver@sbcglobal.net>
Sent: Monday, July 16, 2012 10:37:09 AM
Subject: Re: Pulsar-List: Fuel tank leak
You should never attempt to overlap Jeffco over a poly sulfide sealant.-
Jeffco is essentially inert when cured.- There should be no problem with
over coating Jeffco with a poly sulfide.- The fuel tank end plate closure
sealant is a typical example.- I went from a poly sulfide wing tank seal
ant to Jeffco a few years back....an awful job scrubbing out the wing tanks
with MEK (required about 12 gallons).- The Jeffco wing tank sealant-ha
s held up well and was when I last checked used by Lancaire.
Dave Weaver
--- On Mon, 7/16/12, barrynorman@comcast.net <barrynorman@comcast.net> wrot
e:
From: barrynorman@comcast.net <barrynorman@comcast.net>
Subject: Pulsar-List: Fuel tank leak
#yiv99009826 p {margin:0;}
I finally go the wings off the plane to take a closer look at the leaks. Be
fore taking the end plate off the right tank, I put fuel in it while it was
setting on some saw horses to see exactly were it was leaking from. It app
ears to be coming out at the top of the spar where the skin to the tank mee
ts the spar. This kinda surprised me but was explained when I took the end
plate off. It appears that the-Jeffco fuel tank sealer released in a smal
l-spot on the fiberglass angle near the top of the wing. This must have s
tarted the leak. Jim's suggestion to build a fillet looks like it will fix
this problem.-
I noticed that the area in the tank where the flap return spring bracket co
mes through had cracked and the Jeffco, micro/epoxy mix built up around it
and was falling apart. This means the spar was exposed to fuel in a half do
llar sized area. I checked the bracket and it was tight and rigid and the a
rea of the spar exposed to fuels seemed unaffected. It's still hard and app
ears normal. There appeared to be no leakage through to the other side wher
e the spring attaches. BTW, these tanks were factory built by Skystar.
-
I noticed that the Jeffco is over $500 for a 3 gallon kit which is outrageo
us. They don't offer a smaller kit.-There is another product being sold c
alled Bill Hirsh gas tank sealer that is much cheaper and claims resistance
to alcohol. Has anyone had experience with this product. Will it work with
Jeffco?
-
Thanks,
Barry
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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