---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sat 05/30/15: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:43 AM - Re: symmetrical panel and backup (Rocketman1988) 2. 11:35 AM - NAV splitter (rvdave) 3. 11:49 AM - Re: NAV splitter (Bob Turner) 4. 12:37 PM - Re: Re: NAV splitter (Carl Froehlich) 5. 12:43 PM - Re: NAV splitter (Jesse Saint) 6. 12:56 PM - Re: NAV splitter (rvdave) 7. 01:26 PM - Wheel balancer (Carl Froehlich) 8. 01:55 PM - Re: Re: symmetrical panel and backup (Kelly McMullen) 9. 02:02 PM - Re: Re: NAV splitter (Kelly McMullen) 10. 02:06 PM - Re: NAV splitter (Bob Turner) ________________________________ Message 1 _____________________________________ Time: 08:43:02 AM PST US Subject: RV10-List: Re: symmetrical panel and backup From: "Rocketman1988" "... don't think I need the same level of redundancy in my RV-10, but I really do want something like the GRT mini..." Exactly. I am current;y looking at an AFS EFIS with the GRT Mini backup. Seems like a good compromise. If the weather is so bad that I need triple redundant systems, then I will probably just delay a bit...or go on the airlines... Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442808#442808 ________________________________ Message 2 _____________________________________ Time: 11:35:43 AM PST US Subject: RV10-List: NAV splitter From: "rvdave" The quick build kit I have, the previous builder installed two Archer NAV antennae one in each wingtip I'm assuming I can combine these signals using a combiner or reverse splitter . Will I be fighting a ghosting/corrupting signal using two signal sources? -------- Dave Ford RV6 for sale RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442813#442813 ________________________________ Message 3 _____________________________________ Time: 11:49:01 AM PST US Subject: RV10-List: Re: NAV splitter From: "Bob Turner" This absolutely does not work. You will make a directional antenna which works very well in some directions and very poorly in others. Which direction depends on the exact lengths of the coax. One Archer works just fine, with some reduction in sensitivity when looking thru the airframe direction. -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442814#442814 ________________________________ Message 4 _____________________________________ Time: 12:37:46 PM PST US From: Carl Froehlich Subject: Re: RV10-List: Re: NAV splitter Nope - will not work. The impedance match will be all wrong. Use one antenna for NAV, keep the other antenna as a backup comm - say for a handheld. It would work a boat load better than the handheld's rubber ducky antenna. I made this antenna out of same scrap aluminum and small pieces of fiberglass. I used an antenna tester to tune (most of these antennas are so far out that just slapping one in tends to produce disappointing results). 100nmi plus VOR range at altitude. Carl > On May 30, 2015, at 2:45 PM, Bob Turner wrote: > > > This absolutely does not work. > You will make a directional antenna which works very well in some directions and very poorly in others. Which direction depends on the exact lengths of the coax. > One Archer works just fine, with some reduction in sensitivity when looking thru the airframe direction. > > -------- > Bob Turner > RV-10 QB > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=442814#442814 > > > The quick build kit I have, the previous builder installed two Archer NAV antennae one in each wingtip I'm assuming I can combine these signals using a combiner or reverse splitter . Will I be fighting a ghosting/corrupting signal using two signal sources? -------- Dave Ford RV6 for sale RV10 building Cadillac, MI > > > > > > > > ________________________________ Message 5 _____________________________________ Time: 12:43:16 PM PST US From: Jesse Saint Subject: Re: RV10-List: NAV splitter You can use one to Fe achieve Nav radio if you have two, but you don't want to try to combine them. Jesse Saint Saint Aviation, Inc. 352-427-0285 jesse@saintaviation.com Sent from my iPad > On May 30, 2015, at 1:31 PM, rvdave wrote: > > > The quick build kit I have, the previous builder installed two Archer NAV antennae one in each wingtip I'm assuming I can combine these signals using a combiner or reverse splitter . Will I be fighting a ghosting/corrupting signal using two signal sources? > > -------- > Dave Ford > RV6 for sale > RV10 building > Cadillac, MI > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=442813#442813 > > > > > > > > > > ________________________________ Message 6 _____________________________________ Time: 12:56:47 PM PST US Subject: RV10-List: Re: NAV splitter From: "rvdave" Exactly what I need to know, thanks. -------- Dave Ford RV6 for sale RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442818#442818 ________________________________ Message 7 _____________________________________ Time: 01:26:21 PM PST US From: "Carl Froehlich" Subject: RV10-List: Wheel balancer The RV-10 is down for inspection, right wing replacement and to fix an annoying nose gear shimmy. Reading the achieves it was clear that wheel balancing is a major step to solving nose gear shimmy. I already have the solid nose gear axle mod. Finding a wheel balancer proved hard outside of dropping $400 for one from Aircraft Tool Supply. Tom Doran made this one with some very nice bearings he had laying around and milled Delrin spacers (he is magic with a mill machine). It is amazingly sensitive. I tried balancing the nose wheel in the past with just a horizontal rod to find the heavy spot. Using this rig I found my previous attempt to be way off. I ended up using six =BC oz stick on weights to get the nose wheel to balance. The mains used about three weights each. Carl ________________________________ Message 8 _____________________________________ Time: 01:55:58 PM PST US From: Kelly McMullen Subject: Re: RV10-List: Re: symmetrical panel and backup What you choose for backup may be dependent on whether your pitot/static lines run to ADAHRS in rear of plane (dynon Skyview) or if it is at the instrument panel. The GRT mini requires hook up to those lines, and you get benefit of actual airspeed and altitude. Dynon D1/D2 needs no hookup, but only gives you GPS derived ground speed and GPS track and GPS altitude. All better than nothing, but not quite as good as barometric and pitot derived numbers. Huge change in redundancy from when I was flying in non-radar areas with venturi powered gyros and electric turn coordinator, with single nav/com/ils and single ADF. That gave some blood pressure rise when the venturis iced up. Key word is when, not if. Fortunately the old AN gyros would operate down to less than 1" of vacuum, so you got warning when the vacuum started trending below 4" All with one alternator and one battery for electrons. On 5/30/2015 8:39 AM, Rocketman1988 wrote: > > "... don't think I need the same level of redundancy in my RV-10, but I really do want something like the GRT mini..." > > Exactly. I am current;y looking at an AFS EFIS with the GRT Mini backup. Seems like a good compromise. If the weather is so bad that I need triple redundant systems, then I will probably just delay a bit...or go on the airlines... > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=442808#442808 > > ________________________________ Message 9 _____________________________________ Time: 02:02:58 PM PST US From: Kelly McMullen Subject: Re: RV10-List: Re: NAV splitter I have installed two, because I have two nav/coms. If you only have one, perhaps with an ILS, you could use the second one for the GS. As others have said, you can't combine, and if you split for GS or second nav you lose about 50% of the signal strength. On 5/30/2015 12:53 PM, rvdave wrote: > > Exactly what I need to know, thanks. > > -------- > Dave Ford > RV6 for sale > RV10 building > Cadillac, MI > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=442818#442818 > > ________________________________ Message 10 ____________________________________ Time: 02:06:40 PM PST US Subject: RV10-List: Re: NAV splitter From: "Bob Turner" If your nav radio has separate inputs for vor and GS you can hook up one antenna to each and save tbe cost of a splitter. If you want to use it for a com radio you'll want to bend it up as much as possible, and trim about 10% of the length off the end. It won't be great but as Carl said it's better than the rubber duckie. For techies: the impedance match is fine, the issue is that depending on the direction of the signal, there will be phase mis-matches. When the phase difference is 180 degrees you'll get no signal. -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442822#442822 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-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/rv10-list Browse Digests http://www.matronics.com/digest/rv10-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.