---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Mon 05/29/23: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:06 AM - Re: the Obsidian Files - So Much Noise!!! (Area-51) 2. 03:08 AM - Re: the Obsidian Files - So Much Noise!!! (Area-51) 3. 03:19 AM - Re: Re: the Obsidian Files - So Much Noise!!! (Pete Zut) 4. 03:49 AM - Re: the Obsidian Files - So Much Noise!!! (Area-51) 5. 11:06 AM - Re: Door latch shoot-bolt stop (Rick Moss) ________________________________ Message 1 _____________________________________ Time: 12:06:58 AM PST US Subject: Europa-List: Re: the Obsidian Files - So Much Noise!!! From: "Area-51" Today was spent at the creative assessment console a bit more doing some revision and assessment for the "shut that noise up" project. With a few hours in action with the DCI treated airbox there's been a bit of time to ponder the new cabin experience using the Clarity Aloft headset. Things have been very comfortable, however a resonant band has been showing up from 4100rpm to about 4800rpm where the carbi noise is howling. This is just not acceptable and has not passed the Area-51 EQA (experience quality assessment). Coming back to the console the Modal Frequency analysis file was reopened and forensic data more closely looked for evidence of Mass Vibration... The forensic's team were not required to fabricate false evidence or narrative on this occasion. Running the Modal solution again it was found that very little resonance was being generated by the airbox; some resonance was displaying at various bands within our interrogation but we are convinced the information gained points toward another source presenting the howling; most probably the carburettor throats themselves. While the file was open it was a good opportunity to assess the Modal qualities of the pending baffle addition Mod. These results were even better than the non baffled airbox; data gathered shows very little Modal vibration from idle through to max rpm; and this is a great unanticipated result straight off the bat... Coupled with the earlier gathered Harmonic Acoustic results we can assume that there will be very little carburettor noise in action; so its expected the howling will be successfully vanquished from the sacred realm. Winter is almost here, and the baffle Mod must be installed. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=510870#510870 Attachments: http://forums.matronics.com//files/086a4fbc_8011_43fe_ad6a_6274eae7c9f2_359.jpeg http://forums.matronics.com//files/a442c2b7_b30c_414d_9593_4a4e3649e104_500.jpeg http://forums.matronics.com//files/d9d7872c_1191_4685_ba55_f6376f263418_120.jpeg ________________________________ Message 2 _____________________________________ Time: 03:08:52 AM PST US Subject: Europa-List: Re: the Obsidian Files - So Much Noise!!! From: "Area-51" Moving straight into the next phase... Setting up and optimising the Baffle mod for 3D printing; computer says 45hrs... Read this topic online here: http://forums.matronics.com/viewtopic.php?p=510871#510871 Attachments: http://forums.matronics.com//files/ad0cf799_94d0_4438_aa4d_839417d953a9_100.jpeg ________________________________ Message 3 _____________________________________ Time: 03:19:45 AM PST US From: Pete Zut Subject: Re: Europa-List: Re: the Obsidian Files - So Much Noise!!! i'd be worried about bits in that harsh vib/chem environ breaking off and causing bad things. Composite sounds like a safer bet? Cheers PeteZ On Mon, May 29, 2023 at 6:14=AFAM Area-51 wrote: > goldsteinindustrial@gmail.com> > > Moving straight into the next phase... Setting up and optimising the > Baffle mod for 3D printing; computer says 45hrs... > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=510871#510871 > > > Attachments: > > > http://forums.matronics.com//files/ad0cf799_94d0_4438_aa4d_839417d953a9_1 00.jpeg > > =========== =========== =========== =========== =========== > > ________________________________ Message 4 _____________________________________ Time: 03:49:33 AM PST US Subject: Europa-List: Re: the Obsidian Files - So Much Noise!!! From: "Area-51" Me too! Thats why no bits are small enough to get into the carbi throat, and the baffle extension has a cutaway slot to allow air to pass through should it somehow slide out of its position. The trial fit pieces will be PLA and working ones PETG; which is a fuel proof and very tough material... final units will be West resin fibreglass coated. Also have carbon reinforced nylon to chuck at the situation. Final airbox product will be unitised composite single piece and trial bits thrown in the recycle bin. The Modal and CFD tests indicate a low stress neutral pressure working environment. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=510873#510873 ________________________________ Message 5 _____________________________________ Time: 11:06:11 AM PST US Subject: Europa-List: Re: Door latch shoot-bolt stop From: "Rick Moss" Hi Vince, I have not published the files anywhere, as the imminent approval requires that they are made and supplied by me. I do not charge anything for them however. Regards, Rick Read this topic online here: http://forums.matronics.com/viewtopic.php?p=510874#510874 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/europa-list Browse Digests http://www.matronics.com/digest/europa-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.