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Fiberglass instrument panel
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brinker(at)cox-internet.c
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PostPosted: Wed Jan 04, 2006 8:19 am    Post subject: Fiberglass instrument panel Reply with quote


I have a composite airplane Aerocomp 6. The dash panel is
fiberglass. Will the fiberglass alone be strong enough to support the
avionics ? Do I need an overlay of some sort ?
Randy


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mprather(at)spro.net
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PostPosted: Wed Jan 04, 2006 8:53 am    Post subject: Fiberglass instrument panel Reply with quote

Not sure, but it sounds like a question for Aerocomp.. My Varieze has the
stock fiberglass sandwich panel, and has the avionics/instruments mounted
directly to it, but the Aerocomp likely has different layup/materials..
However, I think the stock Varieze panel looks kind of cheesy (technical
term)..
Matt-


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nuckollsr(at)cox.net
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PostPosted: Wed Jan 04, 2006 9:00 am    Post subject: Fiberglass instrument panel Reply with quote

A panel with sufficient strength and stiffness can probably
be fabricated from any common structural material. The answer
to your question is not readily provided without knowing
numbers of instruments, weights, overhang moments, etc.
The EASY answer is, if you provide an aluminum overlay equal
to the panel thickness in say, the RV kits, then you WILL
have sufficient structural capability to support the components.
Are you in contact with any folks who have finished and
are flying this airplane? What to the plans call for?
Bob . . .


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BigD(at)DaveMorris.com
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PostPosted: Wed Jan 04, 2006 9:14 am    Post subject: Fiberglass instrument panel Reply with quote

The Dragonfly uses a fiberglass instrument panel that is actually
structural! But there are some really SWEET carbon fiber overlays you can
put on that will spiff them up quite a bit, thanks to the Japanese "tuner"
import crowd. See http://www.robotcombat.com/marketplace carbonfiber.html
for some colorful carbon fiber overlay sheets. I'm planning to use a red
one on my panel.
Dave Morris
At 10:17 AM 1/4/2006, you wrote:
I have a composite airplane Aerocomp 6. The dash panel is
fiberglass. Will the fiberglass alone be strong enough to support the
avionics ? Do I need an overlay of some sort ?
Randy


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stein(at)steinair.com
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PostPosted: Wed Jan 04, 2006 9:16 am    Post subject: Fiberglass instrument panel Reply with quote


Hi Randy,
It really depends on the contents of the panel and how you construct it
along with the thickness and type of composite panel. For example, if the
panel is only 3 layers of 3oz. glass, then it won't support anything.
But....if the panel is 5 layers of Carbon then it probably would support
anything you put in it.
Assuming your panel is a moderately stiff glass panel, then if you put the
requisite structural stiffners behind the radio rack and don't hang dual
530's off of it you'll proabably be ok in that area. This too depends on the
units themselves...some avionics are very shallow and light, others are
really deep and heavy.
If you use some of the newer EFIS's like a Dynon or GRT they don't weight
much at all and should be fine in that area. But if you use a conventional
"6 pack" with Vac Gryos then the likelyhood is that after you remove the
glass it won't support the instruments.
The cure for that of course is to cut some aluminum sheets which fit into
the areas you'll be mounting instruments. Unless it's really heavy stuff,
then .040"-.063" should be plenty.
Hope that helps and doesn't confuse too much!
Cheers,
Stein.
do not archive


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brinker(at)cox-internet.c
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PostPosted: Wed Jan 04, 2006 10:10 am    Post subject: Fiberglass instrument panel Reply with quote


I have not found a forum for this plane, I suppose there are not
many being built. I am not the original purchaser of the kit so Aerocomp
wants $3000 ( believe it or not) up front to give any builder assistance.
And I have loads of assembly photo's, diagrams etc. but cannot find and
specifics on the panel. Was hoping to find another person building an
Aerocomp in group.


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Bruce(at)glasair.org
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PostPosted: Wed Jan 04, 2006 10:26 am    Post subject: Fiberglass instrument panel Reply with quote


The Glasair line of airplanes usually have a FG panel, with a twist. An .062
aluminum insert encompasses the entire flight group (some have gone to
.090). The radio rack is all FG but the secret is that the radio stack is
supported from the back of the rack. This means the panel is only loaded in
shear. All radios, and deep instruments for that matter, should have support
in the back end of the panel. We pull +6 -3 g's with these toys, gotta make
it secure.
Bruce
www.glasair.org


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mprather(at)spro.net
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PostPosted: Wed Jan 04, 2006 10:45 am    Post subject: Fiberglass instrument panel Reply with quote


Ouch!! That's a black eye for Aerocomp as far as I am concerned..
Interesting. I don't think that's common in the industry, is it?
Regards,
Matt-
<brinker(at)cox-internet.com>
I have not found a forum for this plane, I suppose there are
not
many being built. I am not the original purchaser of the kit so Aerocomp
wants $3000 ( believe it or not) up front to give any builder
assistance. And I have loads of assembly photo's, diagrams etc. but
cannot find and specifics on the panel. Was hoping to find another
person building an Aerocomp in group.


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brinker(at)cox-internet.c
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PostPosted: Wed Jan 04, 2006 12:18 pm    Post subject: Fiberglass instrument panel Reply with quote


Thanks. Nice but rather pricey I guess that if you want to save weight
you have to spend the bucks.


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PostPosted: Wed Jan 04, 2006 1:27 pm    Post subject: Fiberglass instrument panel Reply with quote


I may have been a little more gunshy about buying this plane if I had
known this before hand. You would think any kit manufacturer would be more
than happy to help out any way they could just to get more of their design's
in the air as advertisement.


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brinker(at)cox-internet.c
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PostPosted: Wed Jan 04, 2006 2:59 pm    Post subject: Fiberglass instrument panel Reply with quote


It will not be a problem to support the radio stack from the back on
this plane. Accually I believe I will do that even if I decide to put an
aluminum plate over the FG


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PostPosted: Wed Jan 04, 2006 3:23 pm    Post subject: Fiberglass instrument panel Reply with quote

We installed the trays on pieces of 3/4"x3/4" aluminum angle and the
fastened them to the glass panel.
John
Lancair ES


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PostPosted: Wed Jan 04, 2006 3:27 pm    Post subject: Fiberglass instrument panel Reply with quote


Thanks Stein, no I'm not really confused but without the experience I
tend to be a little bit slow. Could'nt say for sure of the amount of layers
but it is at least 1/8 thick possibly more, I have yet to cut a hole in it
to find out for sure. It feels solid and looks fairly solid. Although I
think my main concern is vibration pulling the mounting screws through.
Washers I suppose would take care of that problem but would more than likely
look tacky.
I plan on dual GRT's both stacked on the pilot side, with wx8
stormscope, auto pilot and annunciators stacked to the rh, audio panel,
sl30, kln90b, gtx330 radio stack in middle, 3 1/8 asi, alt, & electric adi
to the rh of radio stack. No vaccum instruments. These items are not at
all heavy individually but together with turbulence or G's could be. I
suppose the added weight of the aluminum plate vs. safety factor is minimal.
Thanks to all for your contributions and for helping me make my
mind up and add the aluminum plate.


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PostPosted: Wed Jan 04, 2006 3:31 pm    Post subject: Fiberglass instrument panel Reply with quote


Off topic Do not archive
As the second owner of a Murphy kit, I can tell you that they expressed
delight to provide me with free support. They just wanted to help get
another of their products airborne. That support included free
replacement and shipping of a large part that I wasn't happy with. They
provided a CD with a newer version of the manual and when I had an
opportunity to visit the factory they spent a couple of hours answering
questions and giving a tour.
OTOH I think most customer support occurs immediately after purchase and
I can be somewhat sympathetic to a reasonable charge to repeat that for
a new owner.
Ken
Matt Prather wrote:
Ouch!! That's a black eye for Aerocomp as far as I am concerned..
Interesting. I don't think that's common in the industry, is it?
Regards,
Matt-


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PostPosted: Wed Jan 04, 2006 3:46 pm    Post subject: Fiberglass instrument panel Reply with quote


That would definately stiffen the radio stack but what about the
other instruments ?


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PostPosted: Wed Jan 04, 2006 3:49 pm    Post subject: Fiberglass instrument panel Reply with quote



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PostPosted: Wed Jan 04, 2006 6:21 pm    Post subject: Fiberglass instrument panel Reply with quote


Randy
We have a composite panel in a Velocity RG XL. It has a full Apollo/UPS
stack in the center, A full compliment of steam flight gauges, a VM1000,
transponder and an array of breakers. We supported it with a couple of
aluminum strips .It is very sturdy.
Peter
I have a composite airplane Aerocomp 6. The dash panel is
fiberglass. Will the fiberglass alone be strong enough to support the
avionics ? Do I need an overlay of some sort ?
Randy


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PostPosted: Wed Jan 04, 2006 8:35 pm    Post subject: Fiberglass instrument panel Reply with quote


Hello Bob,
We looked at the Radio RAX, but they were a tad on the high side of the
cost curve. Our panel is finished and installed and we need to fly the
bird first.
Thanks for the info,
John
Quote:
We installed the trays on pieces of 3/4"x3/4" aluminum angle and the
fastened them to the glass panel.
John
Lancair ES
Good Evening John,
You might consider using the RadioRax product (www.radiorax.com) in
lieu of
the angle aluminum. Not cheap, but make for very easy changes of
equipment.
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630 985-8503

--


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Joined: 11 Apr 2006
Posts: 143
Location: Newberg, OR

PostPosted: Thu Nov 14, 2019 5:44 am    Post subject: Fiberglass instrument panel Reply with quote

Fibreglass aka polyester and glass can be strong enough to support most panel mounted avionics.  The problems or rather limitations of fibreglass are:
1.  Not as rigid(stiff) as aluminum so will require reinforcement to reduce localized bending. Ie, around openings where racks attach to the panel face.
2.  holes that are made after fabrication break the glass fibers and are subject to tear out are cracking.

3.  Requires a mold to make the panel thus additional time and effort to fabricate.  (typically the panel needs to be removable to facilitate construction and maintenance).
Not impossible but not very practical unless there is some compelling requirement.
Chris


On Wed, Nov 13, 2019 at 10:19 PM MAXI5005 <slavaslim(at)gmail.com (slavaslim(at)gmail.com)> wrote:

Quote:
--> AeroElectric-List message posted by: "MAXI5005" <slavaslim(at)gmail.com (slavaslim(at)gmail.com)>

Will the fiberglass alone be strong enough to support the
avionics ? Do I need an overlay of some sort?




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PostPosted: Thu Nov 14, 2019 6:16 am    Post subject: Re: Fiberglass instrument panel Reply with quote

MAXI5005 is a spammer. Notice that he copied and pasted the original poster's question.

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