---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Fri 09/26/08: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:15 AM - Re: IMC - What If??? () 2. 07:50 AM - Re: Question on Wood props (Ron Lee) 3. 08:18 AM - Re: IMC - What If??? (RobHickman@aol.com) 4. 08:34 AM - Re: Question on Wood props (Jerry Springer) 5. 12:18 PM - Re: IMC - What If??? (Kevin Horton) 6. 02:18 PM - Flighttime Radio tomorrow (Brian Kraut) 7. 02:24 PM - Re: IMC - What If??? (RobHickman@aol.com) 8. 07:56 PM - Re: IMC - What If??? (Bruce Gray) 9. 08:33 PM - Re: IMC - What If??? (Bret Smith) 10. 10:07 PM - Re: IMC - What If??? (Bruce Gray) ________________________________ Message 1 _____________________________________ Time: 06:15:20 AM PST US From: Subject: Re: RV-List: IMC - What If??? Good point about lighting and agree, but one fine point. Most static and ground straps help the airframe more than avionics. You need to isolate the avionics from the airframe and feed it with a truly isolated interrupt power supply. Most "homebuilt" EFIS don't have to meet any specs but many do try to have at least a regulated power supply. That is good to protect the expensive parts in the main box but may sacrifice it self in a surge. Bottom line it goes dark. Lighting is an amazing and powerful force that we have scratched the surface. I have been a pilot of planes that have been hit by lighting from a small twin (aerostar) to large twins B737. Each time damage was done but to the airframe not the avionics. Not saying that will be the case every time, just my experience. The day will come that a EFIS causes a GA accident in IMC. There have been plenty from vacuum pumps, so its not shocker the risk is there. >From: RobHickman@aol.com >Subject: Re: RV-List: IMC - What If??? >Bruce@glasair.org writes: >What's gonna happen when you're up there >and a lighting bolt strikes your RV and >fries all your electrical systems? >Without ground straps on your control >surfaces and static wicks your >electronics could be the least of your >problems. Actually we spent a lot of >time with the help of Crossbow designing >in lightning protection on the >electrical connections that wire to the >EFIS. Crossbow has extensive experience >with passing the lightning protection >requirements for certification. We have >not actually done lightning verification >testing of our EFIS or the RV-10. ________________________________ Message 2 _____________________________________ Time: 07:50:28 AM PST US From: "Ron Lee" Subject: Re: RV-List: Question on Wood props 1) Contact the prop maker 2) Consult an experienced local A&P/IA I am not suggesting irrational fear but you don't want to make mistakes on prop installation. Ron Lee ________________________________ Message 3 _____________________________________ Time: 08:18:40 AM PST US From: RobHickman@aol.com Subject: Re: RV-List: IMC - What If??? In a message dated 9/26/2008 6:17:04 A.M. Pacific Daylight Time, gmcjetpilot@yahoo.com writes: Most "homebuilt" EFIS don't have to meet any specs but many do try to have at least a regulated power supply. That is good to protect the expensive parts in the main box but may sacrifice it self in a surge. Bottom line it goes dark. The AFS internal Lithium battery powers the system after the protected regulated power supply. If a voltage spike takes out the regulator the screen will not go dark until the battery run's down, usually over an hour. Rob Hickman Advanced Flight Systems **************Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators. (http://www.walletpop.com/?NCID=emlcntuswall00000001) ________________________________ Message 4 _____________________________________ Time: 08:34:51 AM PST US From: Jerry Springer Subject: Re: RV-List: Question on Wood props Doubt many A&P/IA have much experience with wood props anymore, I would contact Ed Sturba, in the past I have found him to be a fantastic person to deal with. As long as the the lug inserts fit tight you are going to be ok with proper torq but still get his opinion. Jerry Ron Lee wrote: > > 1) Contact the prop maker > > 2) Consult an experienced local A&P/IA > > I am not suggesting irrational fear but you don't want to make mistakes > on prop installation. > > Ron Lee > > ________________________________ Message 5 _____________________________________ Time: 12:18:46 PM PST US From: Kevin Horton Subject: Re: RV-List: IMC - What If??? RobHickman@aol.com wrote: > > In a message dated 9/26/2008 6:17:04 A.M. Pacific Daylight Time, > gmcjetpilot@yahoo.com writes: > > Most "homebuilt" EFIS don't have to meet > any specs but many do try to have at least > a regulated power supply. That is good to > protect the expensive parts in the main box > but may sacrifice it self in a surge. > > Bottom line it goes dark. > > > The AFS internal Lithium battery powers the system after the protected > regulated power supply. If a voltage spike takes out the regulator the screen > will not go dark until the battery run's down, usually over an hour. > > > Has the ability of the EFIS to remain powered after a lightning strike been validated by any HIRF/lightning testing, or is it purely hypothetical? Lots of stuff that looks good on paper fails when subjected to testing. Kevin Horton -- Kevin Horton RV-8 (Flight Test Phase) Ottawa, Canada http://www.kilohotel.com/rv8 ________________________________ Message 6 _____________________________________ Time: 02:18:18 PM PST US From: "Brian Kraut" Subject: RV-List: Flighttime Radio tomorrow We are having Joe Norris on the show tomorrow morning at 10:07 AM eastern time at www.flighttimeradio.com. Joe is the new homebuilt community manager for EAA. He was the top tech support guy there for a log time and is probably the most knowledegeable people I know with experimental and certified aircraft. It would be great if some of you wanted to call into the show and ask Joe some technical questions. The number is 904-854-1320. ________________________________ Message 7 _____________________________________ Time: 02:24:31 PM PST US From: RobHickman@aol.com Subject: Re: RV-List: IMC - What If??? In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time, khorton01@rogers.com writes: Has the ability of the EFIS to remain powered after a lightning strike been validated by any HIRF/lightning testing, or is it purely hypothetical? Lots of stuff that looks good on paper fails when subjected to testing. You must have not read my original response, In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time, RobHickman writes: Actually we spent a lot of time with the help of Crossbow designing in lightning protection on the electrical connections that wire to the EFIS. Crossbow has extensive experience with passing the lightning protection requirements for certification. We have not actually done lightning verification testing of our EFIS or the RV-10. **************Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators. (http://www.walletpop.com/?NCID=emlcntuswall00000001) ________________________________ Message 8 _____________________________________ Time: 07:56:43 PM PST US From: "Bruce Gray" Subject: RE: RV-List: IMC - What If??? Just remember, with a non TSO'd EFIS, you and your family are the Beta testers. Bruce www.Glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of RobHickman@aol.com Sent: Friday, September 26, 2008 5:24 PM Subject: Re: RV-List: IMC - What If??? In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time, khorton01@rogers.com writes: Has the ability of the EFIS to remain powered after a lightning strike been validated by any HIRF/lightning testing, or is it purely hypothetical? Lots of stuff that looks good on paper fails when subjected to testing. You must have not read my original response, In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time, RobHickman writes: Actually we spent a lot of time with the help of Crossbow designing in lightning protection on the electrical connections that wire to the EFIS. Crossbow has extensive experience with passing the lightning protection requirements for certification. We have not actually done lightning verification testing of our EFIS or the RV-10. _____ Looking for simple solutions to your real-life fi382257x1200540686/aol?redir=http://www.walletpop.com/?NCID=emlcntus wall086 /aol?redir=http://www.walletpop.com/?NCID=emlcntuswall00000001" target="_blank">Check out WalletPop for the latest news and information, tips and calculators. ________________________________ Message 9 _____________________________________ Time: 08:33:51 PM PST US From: "Bret Smith" Subject: RE: RV-List: IMC - What If??? Bruce, Following your rationale, anyone who flies a non-certificated aircraft is a Beta tester... I fail to accept your premise. Bret Smith RV-9A N16BL Blue Ridge, Ga www.FlightInnovations.com _____ From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Bruce Gray Sent: Friday, September 26, 2008 10:55 PM Subject: RE: RV-List: IMC - What If??? Just remember, with a non TSO'd EFIS, you and your family are the Beta testers. Bruce www.Glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of RobHickman@aol.com Sent: Friday, September 26, 2008 5:24 PM Subject: Re: RV-List: IMC - What If??? In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time, khorton01@rogers.com writes: Has the ability of the EFIS to remain powered after a lightning strike been validated by any HIRF/lightning testing, or is it purely hypothetical? Lots of stuff that looks good on paper fails when subjected to testing. You must have not read my original response, In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time, RobHickman writes: Actually we spent a lot of time with the help of Crossbow designing in lightning protection on the electrical connections that wire to the EFIS. Crossbow has extensive experience with passing the lightning protection requirements for certification. We have not actually done lightning verification testing of our EFIS or the RV-10. _____ Looking for simple solutions to your real-life fi382257x1200540686/aol?redir=http://www.walletpop.com/?NCID=emlcntuswall086 /aol?redir=http://www.walletpop.com/?NCID=emlcntuswall00000001" target="_blank">Check out WalletPop for the latest news and information, tips and calculators. href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.com/N avigator?RV-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ________________________________ Message 10 ____________________________________ Time: 10:07:54 PM PST US From: "Bruce Gray" Subject: RE: RV-List: IMC - What If??? Yes, to a degree. I built my Glasair III, you built your RV-9. We both know how it was done and the care and pride we took in it. I didn't write the code in my EHSI or your EFIS. I have no idea of the care or competence that went into it. Meeting TSO specs is one way to gage that level. Finding a bunch of pilots willing to bet their lives on it and fly it around for several thousand hours is another. No thanks, I'll pass. Bruce www.Glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Bret Smith Sent: Friday, September 26, 2008 11:33 PM Subject: RE: RV-List: IMC - What If??? Bruce, Following your rationale, anyone who flies a non-certificated aircraft is a Beta tester... I fail to accept your premise. Bret Smith RV-9A N16BL Blue Ridge, Ga www.FlightInnovations.com _____ From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Bruce Gray Sent: Friday, September 26, 2008 10:55 PM Subject: RE: RV-List: IMC - What If??? Just remember, with a non TSO'd EFIS, you and your family are the Beta testers. Bruce www.Glasair.org -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of RobHickman@aol.com Sent: Friday, September 26, 2008 5:24 PM Subject: Re: RV-List: IMC - What If??? In a message dated 9/26/2008 12:20:58 P.M. Pacific Daylight Time, khorton01@rogers.com writes: Has the ability of the EFIS to remain powered after a lightning strike been validated by any HIRF/lightning testing, or is it purely hypothetical? Lots of stuff that looks good on paper fails when subjected to testing. You must have not read my original response, In a message dated 9/25/2008 4:55:37 P.M. Pacific Daylight Time, RobHickman writes: Actually we spent a lot of time with the help of Crossbow designing in lightning protection on the electrical connections that wire to the EFIS. Crossbow has extensive experience with passing the lightning protection requirements for certification. We have not actually done lightning verification testing of our EFIS or the RV-10. _____ Looking for simple solutions to your real-life fi382257x1200540686/aol?redir=http://www.walletpop.com/?NCID=emlcntus wall086 /aol?redir=http://www.walletpop.com/?NCID=emlcntuswall00000001" target="_blank">Check out WalletPop for the latest news and information, tips and calculators. href="http://www.matronics.com/Navigator?RV-List">http://www.matronics. com/N avigator?RV-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c href="http://www.matronics.com/Navigator?RV-List">http://www.matronics. com/N avigator?RV-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-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/rv-list Browse Digests http://www.matronics.com/digest/rv-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.