[rebel-builders] PROSEAL

[Robert and Olga Johnson]

Hi Eric, I am no expert (Wayne pipe in any time) but from my personal
experience, it sounds more like an improper mix originally. Once proseal has
cured, I have not found anything to dissolve it. As far as finding the leak,
I use a mild dish detergent diluted with water and use a soft brush to go
over the suspected areas, while blowing gently thru one of the site gauge
fittings with a length of tubing. Of course the other openings have to be
plugged first. I just finished two wings and on the 2nd wing I had 6 tank
rivets leaking thru the stem hole ???? Go figure. Bob J (Formerly Rebel 652
& 725 assist)
----- Original Message -----
From: <eric.r@dcsol.com>
To: <rebel-builders@dcsol.com>
Sent: Wednesday, April 12, 2006 10:58 AM
Subject: [rebel-builders] PROSEAL

O.K., I need some info from a guru. I am working on finding a small leak
in a
pro-sealed tank ... pro sealed many many years ago (20). The exterior of
the
tank at the inside rib had a lot of "gooey" pro seal under the primer, and
obviously fuel residue ... a very small leak for a while.
What makes the proseal revert to an uncured condition? Seems impossible to
me! The inside of the tank shows NO Signs of a break or softening of the
pro
seal! I'm confused, and I think this repair is great practice before I
work on
the Real Airplane (790R) tanks!!
I have removerd the affected proseal on the exterior rib, and I am going
to
start probing with a sharp object on the interior proseal ... Next I'll
scuff and
start putting on new ... Any ideas



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[Wayne G. O'Shea]

I'm not expert either Bob! I just make it up as I go along!! ;O)

If it was inside the tank it would sound like sloshing compound to me! But
since it's on the outside...sounds like someone used some "miracle"
substance and hid it with primer! 20 years ago??..guess we're not talking a
Murphy metal product are we!?

Gotta get back to the shop....
Wayne

----- Original Message -----
From: "Robert and Olga Johnson" <rjohnson18@cogeco.ca>
To: <rebel-builders@dcsol.com>
Sent: Wednesday, April 12, 2006 12:07 PM
Subject: Re: [rebel-builders] PROSEAL

Hi Eric, I am no expert (Wayne pipe in any time) but from my personal
experience, it sounds more like an improper mix originally. Once proseal

has

cured, I have not found anything to dissolve it. As far as finding the

leak,

I use a mild dish detergent diluted with water and use a soft brush to go
over the suspected areas, while blowing gently thru one of the site gauge
fittings with a length of tubing. Of course the other openings have to be
plugged first. I just finished two wings and on the 2nd wing I had 6 tank
rivets leaking thru the stem hole ???? Go figure. Bob J (Formerly Rebel

652

& 725 assist)
----- Original Message -----
From: <eric.r@dcsol.com>
To: <rebel-builders@dcsol.com>
Sent: Wednesday, April 12, 2006 10:58 AM
Subject: [rebel-builders] PROSEAL

O.K., I need some info from a guru. I am working on finding a small leak
in a
pro-sealed tank ... pro sealed many many years ago (20). The exterior of
the
tank at the inside rib had a lot of "gooey" pro seal under the primer,

and

obviously fuel residue ... a very small leak for a while.
What makes the proseal revert to an uncured condition? Seems impossible

to

me! The inside of the tank shows NO Signs of a break or softening of the
pro
seal! I'm confused, and I think this repair is great practice before I
work on
the Real Airplane (790R) tanks!!
I have removerd the affected proseal on the exterior rib, and I am going
to
start probing with a sharp object on the interior proseal ... Next I'll
scuff and
start putting on new ... Any ideas



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[eric.r]

Nope, not a Murphy Metal plane, but great practice for doing my tanks soon.
It is a Grumman Tiger, and the Grumman guru says it happens a lot, and has
no plausible explanation as to why. I think it was just a mix with no catalyst!
And it lasted a long long time! When I get it done, I'll have a real working
knowledge of what not to do on the Murphy tanks.
On 4/12/2006 11:02 AM, oifa@irishfield.on.ca wrote to rebel-builders:

-> I'm not expert either Bob! I just make it up as I go along!! ;O)
->
-> If it was inside the tank it would sound like sloshing compound to me! But
-> since it's on the outside...sounds like someone used some "miracle"
-> substance and hid it with primer! 20 years ago??..guess we're not talking a
-> Murphy metal product are we!?
->
-> Gotta get back to the shop....
-> Wayne
->
-> ----- Original Message -----
-> From: "Robert and Olga Johnson" <rjohnson18@cogeco.ca>
-> To: <rebel-builders@dcsol.com>
-> Sent: Wednesday, April 12, 2006 12:07 PM
-> Subject: Re: [rebel-builders] PROSEAL
->
->
-> > Hi Eric, I am no expert (Wayne pipe in any time) but from my personal
-> > experience, it sounds more like an improper mix originally. Once proseal
-> has
-> > cured, I have not found anything to dissolve it. As far as finding the
-> leak,
-> > I use a mild dish detergent diluted with water and use a soft brush to go
-> > over the suspected areas, while blowing gently thru one of the site
gauge
-> > fittings with a length of tubing. Of course the other openings have to be
-> > plugged first. I just finished two wings and on the 2nd wing I had 6 tank
-> > rivets leaking thru the stem hole ???? Go figure. Bob J (Formerly Rebel
-> 652
-> > & 725 assist)
-> > ----- Original Message -----
-> > From: <eric.r@dcsol.com>
-> > To: <rebel-builders@dcsol.com>
-> > Sent: Wednesday, April 12, 2006 10:58 AM
-> > Subject: [rebel-builders] PROSEAL
-> >
-> >
-> > > O.K., I need some info from a guru. I am working on finding a small leak
-> > > in a
-> > > pro-sealed tank ... pro sealed many many years ago (20). The exterior
of
-> > > the
-> > > tank at the inside rib had a lot of "gooey" pro seal under the primer,
-> and
-> > > obviously fuel residue ... a very small leak for a while.
-> > > What makes the proseal revert to an uncured condition? Seems
impossible
-> to
-> > > me! The inside of the tank shows NO Signs of a break or softening of
the
-> > > pro
-> > > seal! I'm confused, and I think this repair is great practice before I
-> > > work on
-> > > the Real Airplane (790R) tanks!!
-> > > I have removerd the affected proseal on the exterior rib, and I am
going
-> > > to
-> > > start probing with a sharp object on the interior proseal ... Next I'll
-> > > scuff and
-> > > start putting on new ... Any ideas
-> > >
-> > >
-> > >
-> > > -----------------------------------------------------------------
-> > > List archives located at: https://www.dcsol.com/login
-> > > username "rebel" password "builder"
-> > > Unsubscribe: rebel-builders-unsubscribe@dcsol.com
-> > > List administrator: mike.davis@dcsol.com
-> > > -----------------------------------------------------------------
-> > >
-> > >
-> > >
-> >
-> >
-> >
-> >
-> > -----------------------------------------------------------------
-> > List archives located at: https://www.dcsol.com/login
-> > username "rebel" password "builder"
-> > Unsubscribe: rebel-builders-unsubscribe@dcsol.com
-> > List administrator: mike.davis@dcsol.com
-> > -----------------------------------------------------------------
-> >
-> >
-> >
-> >
->
->
->





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[Ken]

All the unmixed pro seal that I've come across is white or creamy coloured.
The mixed stuff was dark brown or black.
Ken

eric.r@dcsol.com wrote:

Nope, not a Murphy Metal plane, but great practice for doing my tanks soon.
It is a Grumman Tiger, and the Grumman guru says it happens a lot, and has
no plausible explanation as to why. I think it was just a mix with no catalyst!
And it lasted a long long time! When I get it done, I'll have a real working
knowledge of what not to do on the Murphy tanks.
On 4/12/2006 11:02 AM, oifa@irishfield.on.ca wrote to rebel-builders:

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[Gary Gustafson]

From an email posted 6/20/2010 - Should answer your questions
This website has an interesting article regarding tank sealants (think Pro
Seal, etc), It should answer some of the questions that were recently asked
by a Rebel Builder. Serves as a good reference also.

http://www.rivetbangers.com/documents/tank_sealant.pdf

Answer is use toluene, however some use MEK or a 50/50 mix

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Andrew
Burr
Sent: Saturday, August 21, 2010 8:25 PM
To: Rebel owners
Subject: [rebel-builders] ProSeal

Has any one ever thinned ProSeal with MEK to make it easier to brush on. I
have been told this is standard practice.

Andrew E Burr XIV

Vertical performance LLc

Po Box 213

Cassville MO 65625



VPHelo, LLc has paid for the design and engineering for every component and
holds ownership of all intellectual property for each component.






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[Ken]

I'm skeptical. The PRC manufacturer told me that thinning cancels the
Milspec and was not recommended. No big surprise I guess as they also
sell a brushable grade. But what he said made sense to me as as this is
a two part hardening compound not a drying compound like paint. And he
seemed very knowledgeable and much more concerned with successful
results than with sales. Anybody here use this stuff in a large milspec
application?

I bought a couple of semkits of brushable stuff to paint all rivets and
seams after assembly. No leaks at 4 years and almost 400 hours.

Ken



Gary Gustafson wrote:

From an email posted 6/20/2010 - Should answer your questions

This website has an interesting article regarding tank sealants (think Pro
Seal, etc), It should answer some of the questions that were recently asked
by a Rebel Builder. Serves as a good reference also.

http://www.rivetbangers.com/documents/tank_sealant.pdf

Answer is use toluene, however some use MEK or a 50/50 mix

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Andrew
Burr
Sent: Saturday, August 21, 2010 8:25 PM
To: Rebel owners
Subject: [rebel-builders] ProSeal

Has any one ever thinned ProSeal with MEK to make it easier to brush on. I
have been told this is standard practice.

Andrew E Burr XIV

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[Dick Wampach]

Yes I have

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Andrew
Burr
Sent: Saturday, August 21, 2010 5:25 PM
To: Rebel owners
Subject: [rebel-builders] ProSeal


Has any one ever thinned ProSeal with MEK to make it easier to brush on. I
have been told this is standard practice.

Andrew E Burr XIV

Vertical performance LLc

Po Box 213

Cassville MO 65625




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[Jeff Micheal]

Sealant can be thinned with up to 15% Toluene, by weight, without affecting
the properties of the sealant. While other solvents, such as MEK, may thin
tank sealant, they may also affect its properties with potential adverse
results, so it is recommended to use Toluene if you must thin the sealant.

Note, thinning up to 15 % is MAX using TOLUENE.......... Not MEK. (take a
look at the label, toluene is one of the "ingredients" in the sealant)

Also, use a scale when mixing for best and accurate ratio (as we all do when
mixing).............


On Sat, Aug 21, 2010 at 7:52 PM, Ken <klehman@albedo.net> wrote:

I'm skeptical. The PRC manufacturer told me that thinning cancels the
Milspec and was not recommended. No big surprise I guess as they also
sell a brushable grade. But what he said made sense to me as as this is
a two part hardening compound not a drying compound like paint. And he
seemed very knowledgeable and much more concerned with successful
results than with sales. Anybody here use this stuff in a large milspec
application?

I bought a couple of semkits of brushable stuff to paint all rivets and
seams after assembly. No leaks at 4 years and almost 400 hours.

Ken



Gary Gustafson wrote:

From an email posted 6/20/2010 - Should answer your questions

This website has an interesting article regarding tank sealants (think

Pro

Seal, etc), It should answer some of the questions that were recently

asked

by a Rebel Builder. Serves as a good reference also.

http://www.rivetbangers.com/documents/tank_sealant.pdf

Answer is use toluene, however some use MEK or a 50/50 mix

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of

Andrew

Burr
Sent: Saturday, August 21, 2010 8:25 PM
To: Rebel owners
Subject: [rebel-builders] ProSeal

Has any one ever thinned ProSeal with MEK to make it easier to brush on.

I

have been told this is standard practice.

Andrew E Burr XIV

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