---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Mon 12/26/11: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:55 PM - Re: RV-List Digest: 2 Msgs - 12/23/11 (Bill Christie) 2. 07:44 PM - Dynon Skyview Airspeed Calibration... (Matt Dralle) 3. 07:54 PM - Re: Dynon Skyview Airspeed Calibration... (Kelly McMullen) 4. 08:03 PM - Re: Dynon Skyview Airspeed Calibration... (David Maib) 5. 08:05 PM - Re: Dynon Skyview Airspeed Calibration... (Linn Walters) 6. 09:20 PM - Re: Dynon Skyview Airspeed Calibration... (mr.gsun@gmail.com) ________________________________ Message 1 _____________________________________ Time: 04:55:27 PM PST US From: Bill Christie Subject: RV-List: Re: RV-List Digest: 2 Msgs - 12/23/11 Please cancel all my subscriptions ---- RV-List Digest Server wrote: * ================================================= Online Versions of Today's List Digest Archive ================================================= Today's complete RV-List Digest can also be found in either of the two Web Links listed below. The .html file includes the Digest formatted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation. The .txt file includes the plain ASCII version of the RV-List Digest and can be viewed with a generic text editor such as Notepad or with a web browser. HTML Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 11-12-23&Archive=RV Text Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 11-12-23&Archive=RV =============================================== EMail Version of Today's List Digest Archive =============================================== ---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Fri 12/23/11: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:24 PM - Re Video cameras (Martin Hone) 2. 06:52 PM - Re: Re Video cameras (Robin Marks) ________________________________ Message 1 _____________________________________ Time: 01:24:11 PM PST US Subject: RV-List: Re Video cameras From: Martin Hone I don't know how the Drift HD170 Stealth goes showing an EFIS display, though I will be finding out in a week or so, but for steam gauges it is great. I have mounted it on the wing ( a bit further forward than most so I get the u/c) and used it as a helmet cam. Both work great. And the wireless remote is really useful, as is the ability to rotate the lens. Remember, it only cost $159 Here are a couple of You tube links that will give you an idea, and despite not using it in HD1080 mode, just the regular 720, the pictures are excellent - especially when the camera is played back on the big screen TV ! The only criticism I have at this stage is the funny things it does to the prop. Here is a landing from the wing : http://www.youtube.com/watch?v=dWXHznnvLD4 This using it as a helmetcam, showing panel : : http://www.youtube.com/watch?v=uW6oJgF3I_U FWIW, Martin ________________________________ Message 2 _____________________________________ Time: 06:52:10 PM PST US From: Robin Marks Subject: RE: RV-List: Re Video cameras TWFydGluIHdoYXQgYSBmdW4gYWlycGxhbmUhDQpTdGFuZGFyZCBiYXR0ZXJ5IGxpZmUgb24gdGhl IGRyaWZ0IGlzIG5vdCBncmVhdCBzbyB0aGUgcmVtb3RlIChpZiB3aXRoaW4gcmFuZ2UpIGlzIGEg YmlnIGhlbHAuDQpZZXMgdGhlIG5ldyBwcmljaW5nIG9uIHRoZSBkcmlmdCBtYWtlcyBtZSB3YW50 IHRvIHRha2UgYSBsb29rIGF0IGEgc2Vjb25kIG9uZS4gU29tZXRpbWVzIGl0J3MgbmljZSB0byBo YXZlIG1hdGNoaW5nIHVuaXRzIGZvciBhY2Nlc3NvcmllcyBldGMuIGJ1dCBJIGRpZCB3YW50IHRv IHBsYXkgd2l0aCB0aGUgQ29udG91ciB0b28uDQpGaXJzdCB0aGluZ3MgZmlyc3QsIEhpcy9IZXJz IEdhbGF4eSBOZXh1cyBpcyB1bmRlciB0aGUgdHJlZS4NCg0KUm9iaW4NCg0KRnJvbTogb3duZXIt cnYtbGlzdC1zZXJ2ZXJAbWF0cm9uaWNzLmNvbSBbbWFpbHRvOm93bmVyLXJ2LWxpc3Qtc2VydmVy 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US From: Matt Dralle Subject: RV-List: Dynon Skyview Airspeed Calibration... Dear Listers, I've been flying the new 10" Dynon Skyview in the RV-6 for a few weeks now and it seems like the airspeed is reading maybe 10mph fast. The GS always reads 10mph or more slower than the True airspeed, no matter which way I fly with respect to the current wind. Looking through the configuration options on the Skyview, I'm not seeing parameters to calibrate the airspeed. If the airspeed were *slow* compared to the GS, I could envision making adjustments to the Pitot tube to get it in better alignment with slipstream. But *fast* is a head scratcher. If there's no electronic configuration parameters to adjust, what do you do? Are there Pitot line "attenuators" like for RF in coax? ;-) Matt - Matt "Red Dawg" Dralle RV-8 #82880 N998RV "Ruby Vixen" http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap... RV-6 #20916 N360EM "The Flyer" http://www.mattsrv6.com - Matt's RV-6 Revitalization Log Status: 42+ Hours Since Purchase - Upgrades Complete; Now In Full Flyer Mode ________________________________ Message 3 _____________________________________ Time: 07:54:58 PM PST US From: Kelly McMullen Subject: Re: RV-List: Dynon Skyview Airspeed Calibration... On the static port, it is critical that there be a lip. Whether you used Van's pop-rivet port or a machined static port, it must not be flush with the aircraft skin. It needs to stick out about 1/16". On 12/26/2011 8:39 PM, Matt Dralle wrote: > --> RV-List message posted by: Matt Dralle > > Dear Listers, > > I've been flying the new 10" Dynon Skyview in the RV-6 for a few weeks now and it seems like the airspeed is reading maybe 10mph fast. The GS always reads 10mph or more slower than the True airspeed, no matter which way I fly with respect to the current wind. Looking through the configuration options on the Skyview, I'm not seeing parameters to calibrate the airspeed. If the airspeed were *slow* compared to the GS, I could envision making adjustments to the Pitot tube to get it in better alignment with slipstream. But *fast* is a head scratcher. If there's no electronic configuration parameters to adjust, what do you do? Are there Pitot line "attenuators" like for RF in coax? ;-) > > Matt > > - > Matt "Red Dawg" Dralle > > RV-8 #82880 N998RV "Ruby Vixen" > http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log > http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log > http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel > Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap... > > RV-6 #20916 N360EM "The Flyer" > http://www.mattsrv6.com - Matt's RV-6 Revitalization Log > Status: 42+ Hours Since Purchase - Upgrades Complete; Now In Full Flyer Mode > > ________________________________ Message 4 _____________________________________ Time: 08:03:02 PM PST US From: David Maib Subject: Re: RV-List: Dynon Skyview Airspeed Calibration... Maybe a static port error? Check out some of Kevin Horton's articles in Kitplanes. Static port errors can, and do, cause "fast" errors. IIRC, Kevin says that pitot alignment does not have to be very precise to be pretty accurate. David Maib Rv-10 40559 Flying. On Dec 26, 2011, at 10:39 PM, Matt Dralle wrote: > > Dear Listers, > > I've been flying the new 10" Dynon Skyview in the RV-6 for a few > weeks now and it seems like the airspeed is reading maybe 10mph > fast. The GS always reads 10mph or more slower than the True > airspeed, no matter which way I fly with respect to the current > wind. Looking through the configuration options on the Skyview, > I'm not seeing parameters to calibrate the airspeed. If the > airspeed were *slow* compared to the GS, I could envision making > adjustments to the Pitot tube to get it in better alignment with > slipstream. But *fast* is a head scratcher. If there's no > electronic configuration parameters to adjust, what do you do? Are > there Pitot line "attenuators" like for RF in coax? ;-) > > Matt > > - > Matt "Red Dawg" Dralle > > RV-8 #82880 N998RV "Ruby Vixen" > http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log > http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log > http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel > Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap... > > RV-6 #20916 N360EM "The Flyer" > http://www.mattsrv6.com - Matt's RV-6 Revitalization Log > Status: 42+ Hours Since Purchase - Upgrades Complete; Now In Full > Flyer Mode > > ________________________________ Message 5 _____________________________________ Time: 08:05:46 PM PST US From: Linn Walters Subject: Re: RV-List: Dynon Skyview Airspeed Calibration... I think you're on the right track ..... airspeed is the measurement of the difference in pressure between the pitot and static. So, it appears (to me anyway) that the static pressure is in a lower pressure area than it 'should be'. You should have two static ports, one on each side of the fuselage about 1/2 way between wing trailing edge and horizontal stab leading edge. This should be the area of least disturbed air going by. Having the ports on each side balances the pressures caused by slipping and sliding. The port should stick out a little to get out of the laminar air flow along the fuselage. Since there's no airflow in either the pitot or static lines, a restricter won't have any effect. The angle of the pitot to relative airflow will have some effect on the airspeed reading too. One of our RV-4 pilots (he bought it, not built it) was complaining about inaccurate airspeed and we found the single static port above and forward of the wing leading edge on the left fuselage side. It's a 'washer' about 1" dia and 1/16" thick with a small hole in the center. It's located right where prop wash will really hit it with turbulent air. He plans on moving it and installing two ports as above. Linn On 12/26/2011 10:39 PM, Matt Dralle wrote: > --> RV-List message posted by: Matt Dralle > > Dear Listers, > > I've been flying the new 10" Dynon Skyview in the RV-6 for a few weeks now and it seems like the airspeed is reading maybe 10mph fast. The GS always reads 10mph or more slower than the True airspeed, no matter which way I fly with respect to the current wind. Looking through the configuration options on the Skyview, I'm not seeing parameters to calibrate the airspeed. If the airspeed were *slow* compared to the GS, I could envision making adjustments to the Pitot tube to get it in better alignment with slipstream. But *fast* is a head scratcher. If there's no electronic configuration parameters to adjust, what do you do? Are there Pitot line "attenuators" like for RF in coax? ;-) > > Matt > > - > Matt "Red Dawg" Dralle > > RV-8 #82880 N998RV "Ruby Vixen" > http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log > http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log > http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel > Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap... > > RV-6 #20916 N360EM "The Flyer" > http://www.mattsrv6.com - Matt's RV-6 Revitalization Log > Status: 42+ Hours Since Purchase - Upgrades Complete; Now In Full Flyer Mode > > ________________________________ Message 6 _____________________________________ Time: 09:20:25 PM PST US Subject: Re: RV-List: Dynon Skyview Airspeed Calibration... From: mr.gsun@gmail.com Is it a true vs indicated issue? Greg On Dec 26, 2011 7:49 PM, "Matt Dralle" wrote: > > Dear Listers, > > I've been flying the new 10" Dynon Skyview in the RV-6 for a few weeks now > and it seems like the airspeed is reading maybe 10mph fast. The GS always > reads 10mph or more slower than the True airspeed, no matter which way I > fly with respect to the current wind. Looking through the configuration > options on the Skyview, I'm not seeing parameters to calibrate the > airspeed. If the airspeed were *slow* compared to the GS, I could envision > making adjustments to the Pitot tube to get it in better alignment with > slipstream. But *fast* is a head scratcher. If there's no electronic > configuration parameters to adjust, what do you do? Are there Pitot line > "attenuators" like for RF in coax? ;-) > > Matt > > - > Matt "Red Dawg" Dralle > > RV-8 #82880 N998RV "Ruby Vixen" > http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log > http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log > http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel > Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap... > > RV-6 #20916 N360EM "The Flyer" > http://www.mattsrv6.com - Matt's RV-6 Revitalization Log > Status: 42+ Hours Since Purchase - Upgrades Complete; Now In Full Flyer > Mode > > ------------------------------------------------------------------------------------- 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.