Today's Message Index:
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1. 07:30 AM - Re: the Obsidian Files - So Much Noise!!! (n7188u)
2. 08:33 AM - Re: the Obsidian Files - So Much Noise!!! (n7188u)
3. 08:43 AM - Re: the Obsidian Files - So Much Noise!!! (n7188u)
4. 08:52 AM - Re: Re: the Obsidian Files - So Much Noise!!! (Pete)
5. 10:24 AM - Re: the Obsidian Files - So Much Noise!!! (n7188u)
6. 10:25 AM - Re: the Obsidian Files - So Much Noise!!! (dmac7)
7. 10:34 AM - Re: the Obsidian Files - So Much Noise!!! (n7188u)
8. 02:54 PM - Re: Re: October 2022 Zoom Episode 1 (Pete)
9. 03:28 PM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
10. 03:53 PM - Re: Best practices, Autopilot install MOD 75 & MOD 76 (Christoph Both)
11. 04:54 PM - Re: Re: the Obsidian Files - So Much Noise!!! (Pete)
12. 10:51 PM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
Message 1
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Area-51,
Great feedback and thanks for sharing. Could you share more details, such as specifications,
on the soundproofing material and the 3M adhesive used. I searched
for Driver Consolidated Industries (DCI) and 3M Magic Tape and found nothing.
I love my Europa except for, as you describe and I have done too, the "Screaming
from Hell"! I am going to try this right away since if it is as you describe
my Europa will go from "Great" to "Fantastic".
Since I am going to take my airplane apart for painting I was considering installing
a Firewall Blanket to reduce the screaming. I wonder if anyone has done
this, results, and if positive materials used.
Best,
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510426#510426
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
A-51,
I have this material that I purchased a while back in an attempt to use something
to reduce the noise in the cockpit. I never used it because this stuff is like
lead in sheets. Incredibly heavy at 0.7 lb/sqft (3.4 kg/sqm), if I did the
converting right. But it looks like it is what you used. I include a picture
of what I got. It's a butyl based insulation with foil. About 80mil (2mm) thick.
Is this close (at least in thickness) to what you used?
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510429#510429
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
I'm so excited about this I will go now to the hangar and work on it with the material
I have :). If it needs to be thicker I can always add a layer but I think
this is what you used. Will report back.
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510431#510431
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Just wondering out loud: extra unsupported weight/mass on the carbs?
> On Mar 16, 2023, at 11:49 AM, n7188u <chmgarb@gmail.com> wrote:
>
>
> I'm so excited about this I will go now to the hangar and work on it with the
material I have :). If it needs to be thicker I can always add a layer but I
think this is what you used. Will report back.
>
> Chris
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=510431#510431
>
>
>
>
>
>
>
>
>
Message 5
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
A-51,
Does your CFD show the ideal location for the carb vents in the plenum? Should
be as close to a stagnant velocity point as possible I would guess. In my plenum
they are located about as far from the top as in yours but further outboard,
more or less in line with the carb intake axis.
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510437#510437
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
That is light weight sound reduction product at 0.7 lbs sqf. If it works on the
firewall please post results.
Dad spent many thousands of hours flying in the western Canadian Arctic behind
a variety of aircraft that were rather loud but the worst was his Helio Courier
with its gear driven Lycoming G0-435 he found a good solution though with adhesive
foam & .010 lead at 6 lbs sqf. it was much heavier than the product you
have but it made the geared Lycoming seem almost silent.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510438#510438
Attachments:
http://forums.matronics.com//files/dads_helio_courier_new_paint_spring_19745_171.jpg
Message 7
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Cool story. I guess that to me this stuff seems heavy. I did have a 1964 Mooney
that I removed the sound deadening material from the thin fwd fuselage aluminum
skin. It was so lout that it would overpower the ANR headset I had back then
and make it squeal during take off until power and prop RPM was brought back
a little.
I got the plenum out and will be doing the covering it today. The firewall I will
do after I take the engine out to facilitate painting. Still don't know what
to do there. I may use the "heavy" stuff I have for the metal firewall section
(mono) since I heard that part could be a big contributor to noise going into
the cabin. But may consider doing a blanket for the composite if I get some
positive feedback from the group.
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510439#510439
Message 8
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| Subject: | Re: October 2022 Zoom Episode 1 |
Genius.
Thx for the vid!
PeteZ
> On Mar 15, 2023, at 2:26 PM, rparigoris <rparigor@hotmail.com> wrote:
>
>
> Hi Group
>
> Here's links to March 2023 Zoom Episode 5 about Fuel Sender Operation and Repair:
> https://1drv.ms/u/s!Ah1S270Nwg9Vgfx9spnrAw9ZaL5m7w?e=12nuwO
>
> For whatever reason, Matronics always cuts off some of the hyper-link when I
post links. Just copy the entire link and paste into URL of browser.
>
> ** If buffering occurs when viewing mp4 video, open the settings icon and reduce
resolution. The settings icon is a gear with a hole in it located on bottom.
>
> Ron and Wayne
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=510418#510418
>
>
>
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>
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>
>
Message 9
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Ok, an update from this morning's second test flight...
Today was magic; perfect conditions and zero wind; was up in the air just after
sunrise; and experienced even more brilliant results... Today I got to use my
TSO'd Clarity Aloft in ear comms without any bit of challenge from external noise;
they are actually better to use now than the Bose Active X; even on WOT
the Clarity Aloft volume was set at about 30%.. the aircraft flight experience
is now like cruising down the highway in a wonderful 60's british sports car...
it takes a lot to impress me, and i am beyond impressed; the aircraft is just
such a joy to be in now.
The conditions were so good today i tootled around at 70kt for 75minutes and burnt
a whopping 6Lt of fuel...
Chris, the product you pictured is the same spec, and its "Diver Consolidate Industries"
in victoria australia, google for "DCI Heat Shielding", try emailing
Wayne, he will fill you in on how to correctly use this product. For something
like a 60's mustang rear quarter you only need a 4x12 inch strip to stop the
panel drumming. There are other lighter DCI products for noise attenuation.
Regarding the compensation tube positioning; any position 1.5" toward the center
of the plenum box away from the carbi induction port will be in static atmospheric
conditions and away from induction affects.
The plenum box rests upon the top of the undercarriage spaceframe posts and backface
firewall; it could be 50kg and still not cause any stress upon the bing
carbi mounts.
As is the mod has sent hell screaming back to where it fricken came from!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510447#510447
Attachments:
http://forums.matronics.com//files/f1273b1d_5e16_4342_9488_a268fd3e6d10_208.jpeg
Message 10
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| Subject: | Re: Best practices, Autopilot install MOD 75 & MOD 76 |
Hello Europa Community:
I am looking at upgrading my existing GRT SX-200 EFIS equipped aircraft to autopilot
capabilities.
What would be the best practices, from lessons learned and MOD 75&76 prescribed,
to install the two lateral/vertical command GRT servos?
While the lateral component control from a servo installed under the right seat
seems rather straight forward, I am a bit concerned how to best locate and connect
the vertical component servo to the CS10 torque tube. MOD76 suggest complete
removal of the existing CS10 torque tube and replace with a CS10/2 version
having an actuation horn affixed to. Is this the only (difficult) solution or
would a connection to the elevator pushrod or already welded on actuation horn
be a solution, without purchasing a replacement CS10/2? Perhaps welding/ riveting
a horn to the existing CS10 tube would do?
I have the GRT servos which look very similar to Dynon or Garmin AP new digital
servos - any solutions to make a metal bracket or otherwise securely attach the
servos to the aircraft would be appreciated? GRT sells metal servo brackets
for general installations.
I have a CLASSIC fuselage with original large tunnel.
It was mentioned there could be a conflict with the glider wing brake actuating
mechanism for the vertical component of the autopilot installation. EUROPA gliders,
was there a solution found?
Thank you,
Christoph Both
Wolfville Nova Scotia, Canada
Europa Classic #223 2013
Message 11
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
70knts? Mine would be plowing like motorboat offplane lol.
Fwiw, my classics airbox is free of touching anything but the carbs. :)
PeteZ
> On Mar 16, 2023, at 6:34 PM, Area-51 <goldsteinindustrial@gmail.com> wrote:
>
>
> Ok, an update from this morning's second test flight...
>
> Today was magic; perfect conditions and zero wind; was up in the air just after
sunrise; and experienced even more brilliant results... Today I got to use
my TSO'd Clarity Aloft in ear comms without any bit of challenge from external
noise; they are actually better to use now than the Bose Active X; even on WOT
the Clarity Aloft volume was set at about 30%.. the aircraft flight experience
is now like cruising down the highway in a wonderful 60's british sports car...
it takes a lot to impress me, and i am beyond impressed; the aircraft is
just such a joy to be in now.
>
> The conditions were so good today i tootled around at 70kt for 75minutes and
burnt a whopping 6Lt of fuel...
>
> Chris, the product you pictured is the same spec, and its "Diver Consolidate
Industries" in victoria australia, google for "DCI Heat Shielding", try emailing
Wayne, he will fill you in on how to correctly use this product. For something
like a 60's mustang rear quarter you only need a 4x12 inch strip to stop the
panel drumming. There are other lighter DCI products for noise attenuation.
>
> Regarding the compensation tube positioning; any position 1.5" toward the center
of the plenum box away from the carbi induction port will be in static atmospheric
conditions and away from induction affects.
>
> The plenum box rests upon the top of the undercarriage spaceframe posts and backface
firewall; it could be 50kg and still not cause any stress upon the bing
carbi mounts.
>
> As is the mod has sent hell screaming back to where it fricken came from!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=510447#510447
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/f1273b1d_5e16_4342_9488_a268fd3e6d10_208.jpeg
>
>
>
>
>
>
Message 12
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
http://www.dci.com.au/services/thermal_acoustic_shielding
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510450#510450
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