=wi.rr@mylist.net
> [mailto:krnet-bounces+flykr2s=wi.rr@mylist.net]On Behalf Of Greg
> Martin
> Sent: Tuesday, October 24, 2006 10:49 AM
> To: KRnet
> Subject: KR> Delaminations (HELP)
>
>
>
> I went onto the krdigest to look of delaminations and nothing
> came up.
I went onto the krdigest to look of delaminations and nothing came up. What
to I need to do? I asked for 'delamination' as key word as the instructions
said. Filled in the dates and went forward. But nothing.
Greg Martin
Brian
I constructed my wings in a similiar way using the factory parallel grooved
Divinycell foam.
It allowed the foam to be formed to shape with minimal
shaping/sanding and has the benefit of an internal light glass layer that is
easily sealed with resin prior to installation. My skins in crossse
hi larry bubbles between the glass and the foam none on the spar lines at
all just several on the foam!
cheers
>From: larry flesner
>Reply-To: KRnet
>To: KRnet
>Subject: KR> delaminations!
>Date: Thu, 22 Apr 2004 18:12:44 -0500
>
>At 11:14 PM 4/22/04 +1000, you wrot
>hi larry bubbles between the glass and the foam none on the spar lines at
>all just several on the foam!
>cheers(Ross)
++=
Ross,
I have no scientific proof but my THEORY on "bubbles" is that there was
a dry spot under the glass at that point.
The term Hard-Shelling (circa 1980) - is the practice of covering foam with
micro slurry, letting it cure, sanding it and then applying a fiberglass
layup over the top. (not recommended)
___
Larry A Capps
Naperville, IL
"There are no liars in the lab. Take down the data the way it happened. Y
At 10:25 AM 4/26/04 -0500, you wrote:
>The term Hard-Shelling (circa 1980) - is the practice of covering foam with
>micro slurry, letting it cure, sanding it and then applying a fiberglass
>layup over the top. (not recommended)
>Larry A Capps
The term Hard-Shelling (circa 1980) - is the practice of covering foam
with
micro slurry, letting it cure, sanding it and then applying a fiberglass
layup over the top. (not recommended)
.
Hi Larry C - can you say a bit more here. This is prec
Hard-Shelling can be problematic as far as (secondary bond) adhesion is
concerned. If we look microscopically at the top of the hard-shelled part,
we will see peaks and valleys. These valleys would not be easily sanded
without great effort and the possibility exists of sanding into the foam
part
>The term Hard-Shelling (circa 1980) - is the practice of covering foam
>with micro slurry, letting it cure, sanding it and then applying a fiberglass
>layup over the top. (not recommended)
>(Larry Capps)
>....
>In this particular case I
Note - Burt Rutan has disproved hard-shelling for years, and does not
recommend it.
Note - Nat Puffer recommends against hardshelling on his Cozy designs.
Example of problems from Hard-Shelling:
From: michael.poll...@mci.com
Subject: Loud Pop???
I am in a group of 4 people who built this Velocit
Rutan has disproved hard-shelling
Puffer recommends against hard-shelling
..
Thanks Larry C
When you quote these guys you have my full attention. Like Larry F, I
would really like to understand what actually happens - why this is any
differ
: krnet-bounces+brian.kraut=engalt@mylist.net
[mailto:krnet-bounces+brian.kraut=engalt@mylist.net]On Behalf Of
Stephen Jacobs
Sent: Monday, April 26, 2004 5:43 PM
To: larry.ca...@comcast.net; 'KRnet'
Subject: RE: KR> delaminations!
Rutan has disproved hard-shelling
Puffer reco
The problem we have experienced is localized in only
>one area that is already repaired, but it could happen to others who have
>done what we have done. I WILL NOT be doing any hard-shelling and will
>recommend against it. - Michael Pollock - Flying Velocity N173DT
>Larry A Capps
>Naperville, I
In my earlier post, I mentioned that the peeks get sanded down but not the
valleys, they remain un-sanded; the inside of these microscopic broken glass
bubbles (cups) are made of smooth glass or cured un-sanded epoxy. Knowing
this, I would not consider "hard-shelling" as a practical alternative to
le weight. Has anyone
ever tried this? Maybe I will do some test pieces.
Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com
-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of larry flesner
Sent: Monday, April 26, 2004 11:27 PM
To: KR
>Epoxy dose not stick to GLASS.
>Try gluing some epoxy to a mirror (reflective side - plz) and see how easily
>the epoxy peels off the mirror, after cured. (Larry Capps)
+++
If my "hard-shelled" foam had a mirror finish, even I wouldn't try glassing
>I have thought of taking something like a thin steel ruler and putting 1/4"
>deep grooves in the foam in a 6" X 6" grid pattern before putting on the
>micro. That would prevent the glass from separating from the foam and also
>give it a little more stiffness while adding very little weight. Has
Not a bad idea in my opinion.
KRron
- Original Message -
From: "Brian Kraut"
To: "KRnet"
Sent: Tuesday, April 27, 2004 7:24 AM
Subject: RE: KR> delaminations!
> I have thought of taking something like a thin steel ruler and putting
1/4"
> deep gro
when it
was hot and bubbled.
Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com
-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of larry flesner
Sent: Tuesday, April 27, 2004 9:07 AM
To: KRnet
Subject: RE: KR> delaminations!
>
is
finished [sanded], is a good idea. Problem is, you don't know until you
bird is parked in the summer sun for a while.
KRron
- Original Message -
From: "Brian Kraut"
To: "KRnet"
Sent: Tuesday, April 27, 2004 8:46 PM
Subject: RE: KR> delaminations!
> Yo
hi I am interested on what people have found on wing delaminations on fixing
and prevention i have one wing that is perfect and one that has several I
have used epoxy and drilled holes injected resin and sandbagged the area is
this sufficient!
cheers
Ross
__
At 11:14 PM 4/22/04 +1000, you wrote:
>hi I am interested on what people have found on wing delaminations on fixing
>and prevention i have one wing that is perfect and one that has several I
>have used epoxy and drilled holes injected resin and sandbagged the area is
>this sufficient!
>Ross
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