---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 04/16/21: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:54 AM - Re: Next Generation Z-Figures (pilot_pat) 2. 04:29 AM - Re: Plumbing Instruments (racerjerry) 3. 06:33 AM - Re: Plumbing Instruments (Christopher Cee Stone) 4. 06:57 AM - Re: Plumbing Instruments (Ernest Christley) 5. 09:26 AM - Re: Plumbing Instruments (Sebastien) 6. 09:30 AM - Re: Plumbing Instruments (Sebastien) ________________________________ Message 1 _____________________________________ Time: 03:54:36 AM PST US Subject: AeroElectric-List: Re: Next Generation Z-Figures From: "pilot_pat" Please advise where I may find the "copious notes including a pre-flight checklist that will exercise all functionalities before launching into the blue." I understand if they are not issued yet; I did try to find them. Thanks Pat Read this topic online here: http://forums.matronics.com/viewtopic.php?p=501403#501403 ________________________________ Message 2 _____________________________________ Time: 04:29:06 AM PST US Subject: AeroElectric-List: Re: Plumbing Instruments From: "racerjerry" I ran into a problem with Nylon fittings about 25 years ago during my very first solo flight of my then recently completed ultralight aircraft. Most Nylon fittings are injection molded (not machined), leaving a tiny seam at the mold parting line. During climbout, airspeed read significantly LOW (right at published stall speed) and scared the CRAP out of me. A few other problems, like motorcycle type windscreen collapsing into my lap didn't help either. Nylon fittings work well if you recognize that they MAY leak. Pitot and Static systems must be leak tested before first flight. EASY! Insert an altimeter into each system; pump it up to 10,000 feet and witch for a slow decay. If it has not lost more that 1,000 feet after one minute, you are good to go. Yes, Teflon tape on pipe threads will help attain a seal; just make sure that whenever the fitting is removed that you take extra care to remove all traces of tape remnants from the inside of the female threads. And don't over-tighten fittings as the wedge action of pipe threads may easily split plastic instrument cases. Jerry King -------- Jerry King Read this topic online here: http://forums.matronics.com/viewtopic.php?p=501405#501405 ________________________________ Message 3 _____________________________________ Time: 06:33:43 AM PST US From: Christopher Cee Stone Subject: Re: AeroElectric-List: Plumbing Instruments No tape! Teflon or otherwise. It will extrude out of the threads as tiny slivers and enter the system with less than desirable consequences. Use a joint compound that is plastc compatible. Loctite thread sealer 5772 or Loctite thread sealant with PTFE 1527514 .chris stone RV-8 On Thu, Apr 15, 2021 at 7:20 PM rparigoris wrote: > rparigor@hotmail.com> > > Hi Group In process of wiring and plumbing instruments. Question: I have > Male Nylon 1/8" NPT hose nipples going into metal female threads on Dynon > D10A and Altimeter. Should any thread compound or tape be applied before > assembly? Thx. Ron P. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=501400#501400 > > ________________________________ Message 4 _____________________________________ Time: 06:57:15 AM PST US From: Ernest Christley Subject: Re: AeroElectric-List: Plumbing Instruments Better yet, use plastic fittings.=C2- They'll deform to seal the mate co mpletely.=C2- It's not like they have to deal with any heat or pressure, or carry any load. ________________________________ Message 5 _____________________________________ Time: 09:26:52 AM PST US From: Sebastien Subject: Re: AeroElectric-List: Plumbing Instruments The restriction against Teflon tape applies to oil and fuel hoses. It has no bearing on pitot or static connections. There are tens of thousands of amateur built and certified aircraft flying around with Teflon tape on the NPT ends of the fittings without consequence. Note that the tape is only useful on the NPT ends, there is no benefit to adding it to the compression end of the fittings. On Fri, Apr 16, 2021 at 6:40 AM Christopher Cee Stone wrote: > No tape! Teflon or otherwise. It will extrude out of the threads as tiny > slivers and enter the system with less than desirable consequences. > > Use a joint compound that is plastc compatible. > > Loctite thread sealer 5772 or Loctite thread sealant with PTFE 1527514 > > .chris stone > RV-8 > > On Thu, Apr 15, 2021 at 7:20 PM rparigoris wrote: > >> rparigor@hotmail.com> >> >> Hi Group In process of wiring and plumbing instruments. Question: I have >> Male Nylon 1/8" NPT hose nipples going into metal female threads on Dynon >> D10A and Altimeter. Should any thread compound or tape be applied before >> assembly? Thx. Ron P. >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=501400#501400 >> >> >> >> >> >> >> ========== >> - >> Electric-List" rel="noreferrer" target="_blank"> >> http://www.matronics.com/Navigator?AeroElectric-List >> ========== >> FORUMS - >> eferrer" target="_blank">http://forums.matronics.com >> ========== >> WIKI - >> errer" target="_blank">http://wiki.matronics.com >> ========== >> b Site - >> -Matt Dralle, List Admin. >> rel="noreferrer" target="_blank">http://www.matronics.com/contribution >> ========== >> >> >> >> ________________________________ Message 6 _____________________________________ Time: 09:30:03 AM PST US From: Sebastien Subject: Re: AeroElectric-List: Plumbing Instruments I believe the original poster said they were using Nylon fittings. While these fittings will seal better than metal ones without tape, they will still seal better with tape. On Fri, Apr 16, 2021 at 7:05 AM Ernest Christley wrote: > Better yet, use plastic fittings. They'll deform to seal the mate > completely. It's not like they have to deal with any heat or pressure, or > carry any load. > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-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/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-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.