Welcome to the list. Glad to hear from Walter you're flying at last. Still
working on mine, another year or so to go at least.
I've been using JC5 or Mastinox between all my mating surfaces, as well as a
coat of Metaflex on all metal parts.
Nigel
745E
G-ONIG
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Dennis
Finley
Sent: 26 August 2008 18:16
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Rebel/Super Rebel/Moose: Proseal between main
& rear spar doublers?
hi my name is dennis finley i just completed an elite 551elt c-fdyf,im
and aircraft machininst and worked for one of the major airlines for
10 years,i have been watching these question for the past few weeks
and have seen alot of wrong replys given in regards to materials and
your above question! yes in the industry proseal is put between all
surfaces,unseen corrision is a very big problem and should be use on
all major components.most or almost all repairs i have been called on
for repairs have been corrision between these types of surfaces
On Mon, Aug 25, 2008 at 9:08 PM, Ted Waltman <tedwaltman@i1ci.com> wrote:
thoseThe manual calls for proseal between several main spar sections as well as
between the rear spar and one of the rear spar doublers.
First allow me to digress a bit. I know, as I'm sure you do as well, that
there are terrible, so-so, good and even a few excellent A&P's out there.
I'm sure you know a few that you wouldn't trust putting a new windshield
wiper on your car let alone a part on your plane. Likewise there are
to.few whose work is simply outstanding and whose advice is to be listened
wellWe have a couple in the latter category at our airport. In fact there are
at least 3 that have built at least several experimental planes each as
doublersas worked on countless certified planes.
We were scratching our heads about using proseal between doublers on the
main and rear spar. We asked the opinion of one of our friends who is an
outstanding A&P. His comment/advice is to NOT put proseal between
closein these locations. Why? Because the doublers are designed to be as
byto each other as possible-in fact they are engineered with the idea that
stressbeing sandwiched TOGETHER they are able to then effectively dissipate
theacross each other (or across multiple layers as in several instances on
ofmain spar). He commented that if they are apart any more than even a bit
primer they lose some of this stress transfer ability. Furthermore, he
commented that by being even slightly apart (due to even a slight bit of
proseal) they would then be free to move against each other and act in a
shear fashion against the rivets holding them (close) together.
Anyone have any engineering experience with this? I emailed the above to
Jeff McMurrer at the factory to get his (and perhaps Darryl's) input.
Thank you,
Ted Waltman
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