Today's Message Index:
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1. 02:26 AM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
2. 03:14 AM - Re: Re: the Obsidian Files - So Much Noise!!! (Pete Zut)
3. 03:16 AM - Re: Re: the Obsidian Files - So Much Noise!!! (Pete Zut)
4. 11:19 AM - Re: October 2022 Zoom Episode 1 (rparigoris)
5. 04:11 PM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
6. 04:27 PM - Re: Re: the Obsidian Files - So Much Noise!!! (Pete)
7. 05:22 PM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
8. 05:36 PM - Re: Re: the Obsidian Files - So Much Noise!!! (Pete)
9. 06:17 PM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
Message 1
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Stage one of "shut that noise up" completed.
Applied a dense OEM sound absorbing material made by Diver Consolidated Industries;
also acts as a secondary low temp heat shield... Not for the novice. It uses
a magic 3M adhesive back. You get one chance sticking it down, and it cannot
be removed to reposition... then give it a good going over with a roller; done...
has added 1kg up from 560g to the plenum.
The only way carbi noise is getting out of there now is through the air filter.
Will try it out tomorrow and listen if Stage 2 baffles are still required.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510412#510412
Attachments:
http://forums.matronics.com//files/01bd6b77_0c48_4675_a0a9_2c45bb3f83bf_110.jpeg
http://forums.matronics.com//files/a258bea6_c367_4151_89fc_1cbcb0d85510_447.jpeg
http://forums.matronics.com//files/f01ce90b_73f6_4fa1_9e56_005555a0b69b_100.jpeg
Message 2
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
an added risk of ingestion.
worth it?
Cheers,
PeteZ
On Wed, Mar 15, 2023 at 5:33=AFAM Area-51 <goldsteinindustrial@gmail.
com>
wrote:
> goldsteinindustrial@gmail.com>
>
> Stage one of "shut that noise up" completed.
>
> Applied a dense OEM sound absorbing material made by Diver Consolidated
> Industries; also acts as a secondary low temp heat shield... Not for the
> novice. It uses a magic 3M adhesive back. You get one chance sticking it
> down, and it cannot be removed to reposition... then give it a good going
> over with a roller; done... has added 1kg up from 560g to the plenum.
>
> The only way carbi noise is getting out of there now is through the air
> filter.
>
> Will try it out tomorrow and listen if Stage 2 baffles are still required
.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=510412#510412
>
>
> Attachments:
>
>
> http://forums.matronics.com//files/01bd6b77_0c48_4675_a0a9_2c45bb3f83bf_1
10.jpeg
>
> http://forums.matronics.com//files/a258bea6_c367_4151_89fc_1cbcb0d85510_4
47.jpeg
>
> http://forums.matronics.com//files/f01ce90b_73f6_4fa1_9e56_005555a0b69b_1
00.jpeg
>
>
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>
>
Message 3
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
oops..... didn't look at the pics - my bad. only on the outside....
please forgive me
PeteZ
On Wed, Mar 15, 2023 at 6:13=AFAM Pete Zut <peterz@zutrasoft.com> wro
te:
> an added risk of ingestion.
>
> worth it?
>
> Cheers,
> PeteZ
>
> On Wed, Mar 15, 2023 at 5:33=AFAM Area-51 <goldsteinindustrial@gmai
l.com>
> wrote:
>
>> goldsteinindustrial@gmail.com>
>>
>> Stage one of "shut that noise up" completed.
>>
>> Applied a dense OEM sound absorbing material made by Diver Consolidated
>> Industries; also acts as a secondary low temp heat shield... Not for the
>> novice. It uses a magic 3M adhesive back. You get one chance sticking it
>> down, and it cannot be removed to reposition... then give it a good goin
g
>> over with a roller; done... has added 1kg up from 560g to the plenum.
>>
>> The only way carbi noise is getting out of there now is through the air
>> filter.
>>
>> Will try it out tomorrow and listen if Stage 2 baffles are still require
d.
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=510412#510412
>>
>>
>>
>>
>> Attachments:
>>
>>
>> http://forums.matronics.com//files/01bd6b77_0c48_4675_a0a9_2c45bb3f83bf_
110.jpeg
>>
>> http://forums.matronics.com//files/a258bea6_c367_4151_89fc_1cbcb0d85510_
447.jpeg
>>
>> http://forums.matronics.com//files/f01ce90b_73f6_4fa1_9e56_005555a0b69b_
100.jpeg
>>
>>
>>
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>>
>>
>>
>>
Message 4
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| Subject: | Re: October 2022 Zoom Episode 1 |
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
Message 5
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Stage One of "shut that noise up" has been a flying success!!!
Worth every one of the 1000g weight penalty; couldn't recommend it more.
The mod has worked so well that noise canceling is no longer required.. in fact,
its worse now flying with noise canceling than without... at WOT engine noise
has gone from high pitched screaming hell to a dull drone... at cruise you could
have a cockpit conversation without headphones; its just so much more relaxing
and enjoyable... over the moon with the result...
Weight & Balance has been affected by moving the CG more forward; with 10L fuel
the cg crosses the forward boundary.. so i just have to t/o with 50L on board
to balance out closer to center.
Planning on adding a bit more aft weight so not too concerned.
Will still apply Stage 2 internal baffles to shut things up even more...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510421#510421
Attachments:
http://forums.matronics.com//files/41987b1f_3b7a_4d4e_9041_f862d99c8ffe_994.jpeg
Message 6
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Interesting. So you no longer hear the engine revs, but now only the significant
hear whine and prop noises?
> On Mar 15, 2023, at 7:18 PM, Area-51 <goldsteinindustrial@gmail.com> wrote:
>
>
> Stage One of "shut that noise up" has been a flying success!!!
>
> Worth every one of the 1000g weight penalty; couldn't recommend it more.
>
> The mod has worked so well that noise canceling is no longer required.. in fact,
its worse now flying with noise canceling than without... at WOT engine noise
has gone from high pitched screaming hell to a dull drone... at cruise you
could have a cockpit conversation without headphones; its just so much more relaxing
and enjoyable... over the moon with the result...
>
> Weight & Balance has been affected by moving the CG more forward; with 10L fuel
the cg crosses the forward boundary.. so i just have to t/o with 50L on board
to balance out closer to center.
>
> Planning on adding a bit more aft weight so not too concerned.
>
> Will still apply Stage 2 internal baffles to shut things up even more...
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=510421#510421
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/41987b1f_3b7a_4d4e_9041_f862d99c8ffe_994.jpeg
>
>
>
>
>
>
Message 7
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Experience is now a low frequency drone from exhaust along with slight level of
low frequency carburettor noise; so can still hear the engine and gearbox, its
just not a high frequency or high volume level.
At cruise the noise volume of engine and air over the canopy is about equal.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510423#510423
Message 8
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
=EF=BB
=9C At cruise the noise volume of engine and air over the canopy is ab
out equal.=9D
which is what i have with the stockish plenum, and softer lord moun
ts fwiw.
I wonder what id get if i wrapped my plenum too.
PeteZ
> On Mar 15, 2023, at 8:29 PM, Area-51 <goldsteinindustrial@gmail.com> wrote
:
@gmail.com>
>
> Experience is now a low frequency drone from exhaust along with slight lev
el of low frequency carburettor noise; so can still hear the engine and gear
box, its just not a high frequency or high volume level.
>
> At cruise the noise volume of engine and air over the canopy is about equa
l.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=510423#510423
>
>
>
>
>
>
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Message 9
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Peter, the material functions by absorbing specific high and low frequency waves
of the audible spectrum; its material design purpose is for eliminating resonance
drumming on automotive panels.
The plenum box on 181 is very thin fibreglass, so its like a drum skin stock untreated.
Everyone's ears will respond somewhat differently to sound waves, so results will
be perceived differently.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510425#510425
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