---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Tue 04/12/05: 25 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:53 AM - Re: RV6 Spins clamav-milter version 0.80j on opie.wvnet.edu (Stewart, Michael (ISS Atlanta)) 2. 07:32 AM - heavy rt wing problem (Charles Heathco) 3. 07:44 AM - Re: Antenna doubler plates (Mike Robertson) 4. 07:54 AM - Re: Antenna doubler plates (Ralph E. Capen) 5. 08:11 AM - Re: heavy rt wing problem (Stewart, Michael (ISS Atlanta)) 6. 08:45 AM - Re: Should I or shouldn't I (Jeff Dowling) 7. 10:03 AM - Re: Should I or shouldn't I (Fiveonepw@aol.com) 8. 10:07 AM - Re: Should I or shouldn't I (David Carter) 9. 10:57 AM - Re: Should I or shouldn't I (John) 10. 12:32 PM - Re: Should I or shouldn't I (Jerry Grimmonpre) 11. 12:36 PM - Re: Should I or shouldn't I (David Carter) 12. 02:34 PM - Re: Your VG's? (John) 13. 04:42 PM - RV Down? - CNN Headline News (Kyle Boatright) 14. 05:53 PM - [ Jeff Deuchar ] : New Email List Photo Share Available! (Email List Photo Shares) 15. 06:10 PM - Re: Your VG's? (Ron Lee) 16. 06:39 PM - [Fw: [VAF Mailing List] RV-6A Down - not fatal] (Bobby Hester) 17. 06:47 PM - vg's for windscreen clearing (Alex Peterson) 18. 07:13 PM - Re: vg's for windscreen clearing (Jim Jewell) 19. 07:47 PM - alternator speed (Jim Jewell) 20. 08:09 PM - Re: [Fw: [VAF Mailing List] RV-6A Down - not fatal] (Kendel McCarley) 21. 08:26 PM - Engine trouble @ Valkaria (Ed Holyoke) 22. 08:39 PM - Proposed MT prop AD () 23. 08:44 PM - Re: [Fw: [VAF Mailing List] RV-6A Down - not fatal] (Bob Perkinson) 24. 10:28 PM - Re: RV Down? - CNN Headline News (HCRV6@aol.com) 25. 10:56 PM - Re: [Fw: [VAF Mailing List] RV-6A Down - not fatal] (randall) ________________________________ Message 1 _____________________________________ Time: 04:53:56 AM PST US Subject: RE: RV-List: RV6 Spins clamav-milter version 0.80j on opie.wvnet.edu From: "Stewart, Michael (ISS Atlanta)" --> RV-List message posted by: "Stewart, Michael (ISS Atlanta)" You will not get the recovery you saw in this test after 2 full turns. The recovery on a 6 of a fully developed spin, which is fully developed only after 2 1/2, will take 3/4 of a turn to recover. Also I noticed you did not indicate whether or not you had ailerons deployed during the spin which will also tighten the wrap in a 6 and lengthen the recovery. Mike Do not archive. -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Bob Subject: Re: RV-List: RV6 Spins clamav-milter version 0.80j on opie.wvnet.edu --> RV-List message posted by: Bob Results from spin testing my RV. I have been flying my RV for over three years and finally have gotten around to doing spins. I had heard so much bad press about RV6s and spins (all from the RV list), I was quite sure I was going to die if I ever did a spin. But, I am practicing for future aerobatic competitions and one of the maneuvers is a 1 to 2 turn spin for sportsman category. So I decided I had better learn how to spin the RV. In my RV I found it spins just like a Cessna 172. A few MPH above stall, apply full rudder and then full aft stick and there you have it, instant spin. Now getting into a spin is not that hard, it is the getting out that makes all the difference. Following the instructions in the RV6 builders manual resulted in a 1/4 turn spin recovery on my first spin. Just like the manual says. NOTE: I have the instructions in outline form pasted on my panel, just in case. I have worked up to 1 1/2 turn spins and it comes out of the spin easily. As soon as I release the rudder pressure it stops spinning. I do not even have to apply opposite rudder. One time I did use opposite rudder before I released back pressure and it started spinning the other way. When I released back pressure it stopped immediately. What an airplane!! I have not tried the Beggs-Mueller technique as I am not too keen on letting go of the stick. But holding ailerons neutral and releasing back pressure works for me. One spin I did yesterday did not work, I did not apply fully rudder and the aircraft yawed and dropped a wing but would not spin. It takes forceful spin input to get into the spin and then keep it there. I am not encouraging anyone to go and do spins, but after hearing all the bad stuff on the RV list about spins, I thought I would put some people's mind to rest, an RV6 can be recovered from a spin and with enough altitude you will not die!! I loose about 850 feet in a one rotation spin. I just thought you might want to know my results. Bob RV6 NightFighter ________________________________ Message 2 _____________________________________ Time: 07:32:04 AM PST US From: "Charles Heathco" Subject: RV-List: heavy rt wing problem --> RV-List message posted by: "Charles Heathco" I have been compensating for this with the manual aileron trim I installed on my 6a. Yesterday the light was shining on the Rt wing in such a way that i could see a slight upturn of the wing skin at the aileron joint for about 3' along the joint from the outer end. The lft side is fine. That would certainly cause the rt wing to pull down a bit. I didnt build the plane and not sure how this could be fixed, if at all. I wondered if anyone had experienced this, or have a posible fix for it. Charlie heathco ________________________________ Message 3 _____________________________________ Time: 07:44:49 AM PST US From: "Mike Robertson" Subject: RE: RV-List: Antenna doubler plates --> RV-List message posted by: "Mike Robertson" In general I use the rule of thumb to use a thickness equal to the skin thickness, but that can be changed to thicker material depending on the weight and drag of the item being mounted. In this case I think a double plate of .025-.032 is about right. Mike Robertson >From: "Ralph E. Capen" >Reply-To: rv-list@matronics.com >To: rv-list@matronics.com >Subject: RE: RV-List: Antenna doubler plates >Date: Mon, 11 Apr 2005 13:42:28 -0500 (GMT-05:00) > >--> RV-List message posted by: "Ralph E. Capen" > >Mike, > >Anything on thickness? > >Ralph > >-----Original Message----- >From: Mike Robertson >To: rv-list@matronics.com >Subject: RE: RV-List: Antenna doubler plates > >--> RV-List message posted by: "Mike Robertson" > >Ralph, > >For a whip antenna AC 43.13-2A does not even show a doubler. The general >rule-of-thumb that I use for whip antenna installation is at least a 1 inch >edge past any/all screw holes or the outer edge of the antenna base, >whichever is wider. >Use this info at your own risk. > >Mike Robertson > > >From: "Ralph E. Capen" > >Reply-To: rv-list@matronics.com > >To: avionics-list@matronics.com, rv-list@matronics.com > >Subject: RV-List: Antenna doubler plates > >Date: Mon, 11 Apr 2005 13:07:12 -0500 (GMT-05:00) > > > >--> RV-List message posted by: "Ralph E. Capen" > > > >Fellow listers, > > > >I am starting the installation of my Comant CI122 com antenna on the > >underbelly of my RV6A. > > > >All I can find in the archives is Eric Newton's post on a 3" x 6" x .040 > >doubler along with a couple of others that indicate that one is > >required/has been used - check the 43.13. No mention of the basis for >the > >dimensions used. > > > >Obviously, the AC 43.13 should have info on the determination of the > >appropriate dimensions - but I have not learned to read that mumbo jumbo > >well enough to get any usable information from it. > > > >If someone could point out the correct paragraph or how they arrived at > >their specific numbers, I would greatly appreciate it. > > > >Ralph Capen > >RV6AQB N822AR > > > > > > ________________________________ Message 4 _____________________________________ Time: 07:54:14 AM PST US From: "Ralph E. Capen" Subject: RE: RV-List: Antenna doubler plates --> RV-List message posted by: "Ralph E. Capen" Thanks Mike...! -----Original Message----- From: Mike Robertson Subject: RE: RV-List: Antenna doubler plates --> RV-List message posted by: "Mike Robertson" In general I use the rule of thumb to use a thickness equal to the skin thickness, but that can be changed to thicker material depending on the weight and drag of the item being mounted. In this case I think a double plate of .025-.032 is about right. Mike Robertson >From: "Ralph E. Capen" >Reply-To: rv-list@matronics.com >To: rv-list@matronics.com >Subject: RE: RV-List: Antenna doubler plates >Date: Mon, 11 Apr 2005 13:42:28 -0500 (GMT-05:00) > >--> RV-List message posted by: "Ralph E. Capen" > >Mike, > >Anything on thickness? > >Ralph > >-----Original Message----- >From: Mike Robertson >To: rv-list@matronics.com >Subject: RE: RV-List: Antenna doubler plates > >--> RV-List message posted by: "Mike Robertson" > >Ralph, > >For a whip antenna AC 43.13-2A does not even show a doubler. The general >rule-of-thumb that I use for whip antenna installation is at least a 1 inch >edge past any/all screw holes or the outer edge of the antenna base, >whichever is wider. >Use this info at your own risk. > >Mike Robertson > > >From: "Ralph E. Capen" > >Reply-To: rv-list@matronics.com > >To: avionics-list@matronics.com, rv-list@matronics.com > >Subject: RV-List: Antenna doubler plates > >Date: Mon, 11 Apr 2005 13:07:12 -0500 (GMT-05:00) > > > >--> RV-List message posted by: "Ralph E. Capen" > > > >Fellow listers, > > > >I am starting the installation of my Comant CI122 com antenna on the > >underbelly of my RV6A. > > > >All I can find in the archives is Eric Newton's post on a 3" x 6" x .040 > >doubler along with a couple of others that indicate that one is > >required/has been used - check the 43.13. No mention of the basis for >the > >dimensions used. > > > >Obviously, the AC 43.13 should have info on the determination of the > >appropriate dimensions - but I have not learned to read that mumbo jumbo > >well enough to get any usable information from it. > > > >If someone could point out the correct paragraph or how they arrived at > >their specific numbers, I would greatly appreciate it. > > > >Ralph Capen > >RV6AQB N822AR > > > > > > ________________________________ Message 5 _____________________________________ Time: 08:11:27 AM PST US Subject: RE: RV-List: heavy rt wing problem From: "Stewart, Michael (ISS Atlanta)" --> RV-List message posted by: "Stewart, Michael (ISS Atlanta)" Do you mean the skin overlap of the gap fairing was turned up forward of the aileron? Mike Do not archive -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of Charles Heathco Subject: RV-List: heavy rt wing problem --> RV-List message posted by: "Charles Heathco" I have been compensating for this with the manual aileron trim I installed on my 6a. Yesterday the light was shining on the Rt wing in such a way that i could see a slight upturn of the wing skin at the aileron joint for about 3' along the joint from the outer end. The lft side is fine. That would certainly cause the rt wing to pull down a bit. I didnt build the plane and not sure how this could be fixed, if at all. I wondered if anyone had experienced this, or have a posible fix for it. Charlie heathco ________________________________ Message 6 _____________________________________ Time: 08:45:53 AM PST US From: "Jeff Dowling" Subject: Re: RV-List: Should I or shouldn't I --> RV-List message posted by: "Jeff Dowling" I would not undo anything at this point. Just go fly it and see how you like it. I think you will be very happy with your 6 just the way it is. Shemp/Jeff Dowling RV-6A, N915JD 165 hours Chicago/Louisville ________________________________ Message 7 _____________________________________ Time: 10:03:35 AM PST US From: Fiveonepw@aol.com Subject: Re: RV-List: Should I or shouldn't I --> RV-List message posted by: Fiveonepw@aol.com > >If you were in my shoes, where I am just about to take my 6A to the > >airport, would you replace the vertical stab and rudder with a 7/7A > >version prior to getting everything completed? >>> At the same point in my project, I got some time with Mike Seagar in the -9 and asked him the same question. Might want to ask him what his preference is... From The PossumWorks in TN Mark Phillips -6A, kit #25539 -160 hours - do not archive ________________________________ Message 8 _____________________________________ Time: 10:07:44 AM PST US From: "David Carter" Subject: Re: RV-List: Should I or shouldn't I --> RV-List message posted by: "David Carter" I had 1.3 hours dual in an RV-6 and it "hunted" directionally. This is a fairly common observation. - If I could increase the vertical stab area easily, I would. More rudder isn't the issue - it is vertical stab area. - Might consider a "dorsal fin" extending fwd from base of vertical stab (like a Cessna) - should be an easier way of increasing yaw stability vs an entirely new RV-7 vertical stab & rudder. David ----- Original Message ----- From: "Jeff Orear" Subject: RV-List: Should I or shouldn't I > --> RV-List message posted by: "Jeff Orear" > > List: > > This question is directed more toward my 6/6A brethren who are flying their creations. > > If you were in my shoes, where I am just about to take my 6A to the airport, would you replace the vertical stab and rudder with a 7/7A version prior to getting everything completed? Those of you that are flying the 6/6A, do you ever wish you had more rudder authority? Is the tendency to fishtail that apparent with the 6/6A vertical stab and rudder? > > One thing that I have to consider is that I have an 0320 E2D with a Catto three blade, which may bring CG into the picture. > > Just wondering what those that have gone before would do. > > > Regards, > > > Jeff Orear > RV6A N782P (reserved) > Just about to head to the airport > Peshtigo, WI > > ________________________________ Message 9 _____________________________________ Time: 10:57:07 AM PST US From: John Subject: Re: RV-List: Should I or shouldn't I --> RV-List message posted by: John Directional stability in turbulence was something I noticed in my RV6A but didn't worry about too much. After I installed vortex generators on the wings the wobble or fishtailing in rough air stopped. Nada. John David Carter wrote: >--> RV-List message posted by: "David Carter" > >I had 1.3 hours dual in an RV-6 and it "hunted" directionally. This is a >fairly common observation. > - If I could increase the vertical stab area easily, I would. More >rudder isn't the issue - it is vertical stab area. > - Might consider a "dorsal fin" extending fwd from base of vertical >stab (like a Cessna) - should be an easier way of increasing yaw stability >vs an entirely new RV-7 vertical stab & rudder. > >David > >----- Original Message ----- >From: "Jeff Orear" >To: >Subject: RV-List: Should I or shouldn't I > > > > >>--> RV-List message posted by: "Jeff Orear" >> >>List: >> >>This question is directed more toward my 6/6A brethren who are flying >> >> >their creations. > > >>If you were in my shoes, where I am just about to take my 6A to the >> >> >airport, would you replace the vertical stab and rudder with a 7/7A version >prior to getting everything completed? Those of you that are flying the >6/6A, do you ever wish you had more rudder authority? Is the tendency to >fishtail that apparent with the 6/6A vertical stab and rudder? > > >>One thing that I have to consider is that I have an 0320 E2D with a Catto >> >> >three blade, which may bring CG into the picture. > > >>Just wondering what those that have gone before would do. >> >> >>Regards, >> >> >>Jeff Orear >>RV6A N782P (reserved) >>Just about to head to the airport >>Peshtigo, WI >> >> >> >> > > > > ________________________________ Message 10 ____________________________________ Time: 12:32:56 PM PST US From: "Jerry Grimmonpre" Subject: Re: RV-List: Should I or shouldn't I --> RV-List message posted by: "Jerry Grimmonpre" John ... Would you mind telling ALL about your installed vortex generators. What improved, what changed, where you got them, what spacing, yada, yada. Thanx ... Jerry Grimmonpre Huntley, IL RV7A Do Not Archive ________________________________ Message 11 ____________________________________ Time: 12:36:12 PM PST US From: "David Carter" Subject: Re: RV-List: Should I or shouldn't I --> RV-List message posted by: "David Carter" That is really interesting! I'm planning to add vgs after I fly the airplane a few hours and get baseline data for comparison. - It is easy to "assume" that fishtailing is due to inadequate vertical fin area, but . . . - One fellow just mentioned he squeezed his rudder trailing edge and that fixed the problem. A little asymmetrical shedding of air off left and right sides of rudder actually make the rudder move, thus the fishtailing. . . . - You added vg's - asymmetrical shedding of turbulent flow over wings by fuselage could do the same thing. - Lots of variables! David ----- Original Message ----- From: "John" Subject: Re: RV-List: Should I or shouldn't I > --> RV-List message posted by: John > > Directional stability in turbulence was something I noticed in my RV6A > but didn't worry about too much. After I installed vortex generators on > the wings the wobble or fishtailing in rough air stopped. Nada. > > John > > David Carter wrote: > > >--> RV-List message posted by: "David Carter" > > > >I had 1.3 hours dual in an RV-6 and it "hunted" directionally. This is a > >fairly common observation. > > - If I could increase the vertical stab area easily, I would. More > >rudder isn't the issue - it is vertical stab area. > > - Might consider a "dorsal fin" extending fwd from base of vertical > >stab (like a Cessna) - should be an easier way of increasing yaw stability > >vs an entirely new RV-7 vertical stab & rudder. > > > >David > > > >----- Original Message ----- > >From: "Jeff Orear" > >To: > >Subject: RV-List: Should I or shouldn't I > > > > > > > > > >>--> RV-List message posted by: "Jeff Orear" > >> > >>List: > >> > >>This question is directed more toward my 6/6A brethren who are flying > >> > >> > >their creations. > > > > > >>If you were in my shoes, where I am just about to take my 6A to the > >> > >> > >airport, would you replace the vertical stab and rudder with a 7/7A version > >prior to getting everything completed? Those of you that are flying the > >6/6A, do you ever wish you had more rudder authority? Is the tendency to > >fishtail that apparent with the 6/6A vertical stab and rudder? > > > > > >>One thing that I have to consider is that I have an 0320 E2D with a Catto > >> > >> > >three blade, which may bring CG into the picture. > > > > > >>Just wondering what those that have gone before would do. > >> > >> > >>Regards, > >> > >> > >>Jeff Orear > >>RV6A N782P (reserved) > >>Just about to head to the airport > >>Peshtigo, WI > >> > >> > >> > >> > > > > > > > > > > ________________________________ Message 12 ____________________________________ Time: 02:34:40 PM PST US From: John Subject: RV-List: Re: Your VG's? --> RV-List message posted by: John Jerry and Konrad et al, I got the vg's from an outfit in Washington State...don't recall exactly where,..I believe that they are available from the fellow that makes exhaust systems for RV's also...same price as I recall...around $400 (vs $1,200-1600 or thereabouts if put on a certified plane.) As to installation, its dead-brain simple. You measure forward for the leading edge skin-main skin seam so many inches and mark it. A stickon sheet with the places to put the vg's is already cut out shows you the exact location to put them. You scuff up the paint, and use the supplied Lock Tite to install them. Its a two part liquid. You hold them in place for about one minute and they're there for good. Never had one come loose. Total installation time about 2 hours at max. Performance - somewhat subjective - I "feel" more advance warning about an impending stall. The stall is FAR, FAR more gentle...power off stalls are really just a good 'mush' with no wing drop....indicated stall speeds (accuracy at stall angle is really inexact) but my guess is that its about 5 MPH slower as I can tell from GPS - again, thats a crude measurement because its happening pretty fast....Rough air fishtailiing seems no longer to be present. Now if we could get something that would stop the up and down bouncing that now and then gives you a head bump, we'd be on to something! I fly in fairly rugged country near the continental divide with 14,000-ft hills nearby...if I had to go down there aren't many good spots for an emergency landing and a reduction of even 5MPH might save my rear. I see the vg's as a safety feature. John Konrad L. Werner wrote: > Dear John, > Could you please tell me more about these Vortex Generators on your RV? > What / Why / Where / Who, etc. > Thanks, > Konrad ________________________________ Message 13 ____________________________________ Time: 04:42:06 PM PST US From: "Kyle Boatright" Subject: RV-List: RV Down? - CNN Headline News --> RV-List message posted by: "Kyle Boatright" While at lunch, the TV in the restaurant was showing CNN headline news. This was ~12:30 Eastern time. Anyway, they showed "plane crash" video, showing an RV (probably a -6A or-7A), which was resting upright in a parking lot, looking like it had gone down with some airframe damage and a collapsed nosegear. They showed the footage twice, and I got the impression that it was a live shot from a helicopter somewhere. I couldn't hear the audio, nor was there a visible scroll at the bottom of the screen to give a location. Anyone have more information? Do not archive. KB ________________________________ Message 14 ____________________________________ Time: 05:53:21 PM PST US Subject: RV-List: [ Jeff Deuchar ] : New Email List Photo Share Available! From: Email List Photo Shares --> RV-List message posted by: Email List Photo Shares A new Email List Photo Share is available: Poster: Jeff Deuchar Lists: RV-List,Rocket-List Subject: Photos of Eric Hansen's rocket with new paint scheme, and Ken Fowler's rocket. http://www.matronics.com/photoshare/F1Rocket@telus.net.04.12.2005/index.html o Main Photo Share Index http://www.matronics.com/photoshare o Submitting a Photo Share If you wish to submit a Photo Share of your own, please include the following information along with your email message and files: 1) Email List or Lists that they are related to: 2) Your Full Name: 3) Your Email Address: 4) One line Subject description: 5) Multi-line, multi-paragraph description of topic: 6) One-line Description of each photo or file: Email the information above and your files and photos to: pictures@matronics.com ________________________________ Message 15 ____________________________________ Time: 06:10:05 PM PST US From: Ron Lee Subject: RV-List: Re: Your VG's? --> RV-List message posted by: Ron Lee Probably Larry Vetterman vetxaust@gwtc.net (605) 745-5932 http://www.ontariorvators.org/pitot/pitot.htm Ron Lee ________________________________ Message 16 ____________________________________ Time: 06:39:27 PM PST US From: Bobby Hester Subject: RV-List: [Fwd: [VAF Mailing List] RV-6A Down - not fatal] --> RV-List message posted by: Bobby Hester -------- Original Message -------- Subject: [VAF Mailing List] RV-6A Down - not fatal From: Jim Smith http://www.sfgate.com/cgi-bin/article.cgi?file=/c/a/2005/04/12/HAYWARD12.TMP A pilot crash-landed a small airplane in a Hayward parking lot early today after having engine problems shortly after taking off at the city's airport, officials said. The 70-year-old pilot departed from Hayward Executive Airport at 8:50 a.m. and immediately radioed the airport tower with the message that he had a dead engine, a Federal Aviation Administration spokesman said. He got out of the experimental plane after landing it in an industrial area near Soto Road and Jackson Street, about four miles from the airport, officials said. The plane collided with two unoccupied city vehicles, officials sad. The unidentified pilot was taken to a local hospital. Police said the man's injuries did not appear to be life-threatening. An airport spokeswoman said the pilot of the home-built RV-6 plane, who was the only person on board the craft, was bleeding from the head and leg after the crash. No other people were reported injured. The plane crashed into a storage area called Hayward Corporation Yard where city equipment and recycling bins are kept. Serial Number 22305 Type Registration Individual Manufacturer Name NEWELL THOMAS J Certificate Issue Date 09/05/2003 Model RV6A Status Valid Type Aircraft Fixed Wing Single-Engine Type Engine Reciprocating Pending Number Change None Dealer No Date Change Authorized None Mode S Code 50170413 MFR Year 1998 Fractional Owner NO Give the gift of life to a sick child. Support St. Jude Children's Research Hospital's 'Thanks & Giving.' http://us.click.yahoo.com/5iY7fA/6WnJAA/Y3ZIAA/1yWplB/TM Online help on this group at: http://help.yahoo.com/help/groups/ <*> To visit your group on the web, go to: http://groups.yahoo.com/group/vansairforce/ <*> To unsubscribe from this group, send an email to: vansairforce-unsubscribe@yahoogroups.com http://docs.yahoo.com/info/terms/ -- Surfing the Web from Hopkinsville, KY Visit my web site at: http://www.geocities.com/hester-hoptown/RVSite/ RV7A Slowbuild wings-QB Fuse :-) ________________________________ Message 17 ____________________________________ Time: 06:47:15 PM PST US From: "Alex Peterson" Subject: RV-List: vg's for windscreen clearing --> RV-List message posted by: "Alex Peterson" I have noticed patterns of "dead" air on the windscreen of my 6A. What I mean is that if flying in mist, there is minimal tendency for the airstream to blow beads of water from the center two feet or so of the windscreen. I have flown side by side with 8's which do not seem to have this problem. It doesn't matter if I use rain-ex (I've done tests with other products as well, covering the left half of the windscreen and looking for mist to fly in - no difference). The general problem seems to be a lack of high velocity air near the windscreen. I've even noticed when flying in light snow flurries that one can see individual snowflakes as they momentarily pause just ahead of the windscreen. The question is: Would placing a few vg's ahead of the windscreen help this? And, have others noticed this phenomenon? Thanks - Alex Peterson RV6-A 608 hours Maple Grove, MN http://www.home.earthlink.net/~alexpeterson/ ________________________________ Message 18 ____________________________________ Time: 07:13:55 PM PST US From: "Jim Jewell" Subject: Re: RV-List: vg's for windscreen clearing --> RV-List message posted by: "Jim Jewell" Hi Alex, If it seems to be worth a few test flights to you. You could try taping short lengths of wool yarn onto and around the the areas in question (tufting). Then use double sided tape to attach some number of vg's in various areas. After several test flights you might at least be able to improve on the condition you have at present. Has anyone else encountered this and tried some testing? Keep us informed. Jim in Kelowna ----- Original Message ----- From: "Alex Peterson" > > I have noticed patterns of "dead" air on the windscreen of my 6A. What I > mean is that if flying in mist, there is minimal tendency for the > airstream > to blow beads of water from the center two feet or so of the windscreen. > I > have flown side by side with 8's which do not seem to have this problem. > It > doesn't matter if I use rain-ex (I've done tests with other products as > well, covering the left half of the windscreen and looking for mist to fly > in - no difference). The general problem seems to be a lack of high > velocity air near the windscreen. I've even noticed when flying in light > snow flurries that one can see individual snowflakes as they momentarily > pause just ahead of the windscreen. > > The question is: Would placing a few vg's ahead of the windscreen help > this? > And, have others noticed this phenomenon? > > Thanks - > > Alex Peterson ________________________________ Message 19 ____________________________________ Time: 07:47:41 PM PST US From: "Jim Jewell" Subject: RV-List: alternator speed --> RV-List message posted by: "Jim Jewell" Just before the list went away I sent the email copied below. I don't think it got posted. ----- Original Message ----- From: "Jim Jewell" Subject: Re: AeroElectric-List: Alternator Speed An observation, and opinion do not archive > > Speaking of fan belt energy losses; > The majority of the energy loss that fan belts experience as the belt > rounds the pulleys will be given off as heat. If the heat climbs high > enough it will inevitably induce a heat related failure. I personally have > yet to see first hand, a properly adjusted fan felt that suffered such a > premature failure mode. > The worst application I have seen for an > automotive V-belt was the fan belt on the GM Corp. Corvair. They came off > if not very closely watched but they did not get burned off. Not in my > experience > at least. > During many past years I have seen a large number of un-altered unbalanced > alternators on various competition vehicles run at RPM rates that by far > exceeded the RPM rates that have been recently expressed as potentially > harmful on the rv-lists. > I am not saying balancing is of no value. Without a doubt balanced to a > finer tolerance is better. However I doubt that reducing RPM rates with 4+ > inch diameter alternator pulleys and larger will really be worth the > effort and cost. > > Many of the vehicles I refer to ran in 24 hr endurance conditions with > high loads created by lighting requirements etc. > More recently battling the heat generated by serpentine belts bending > around and reversing over many different pulleys has been handled by > improving materials use and reducing belt mass with micro V-belts. > Regardless the vast majority of belt failures that I have seen were age > and contamination related. > > I am not saying re-balancing rotating masses is of no value. Without a > doubt balanced to a finer than OEM tolerance is better. However I doubt > that reducing alternator RPM rates with 4+ inch diameter alternator > pulleys and larger will really be worth the effort and cost. > For me, balance the engine first. Then dynamically balance the prop, that > done, next on the list for me would be the alternator. > Mind you in the above example the alternator would get balanced along with > the engine anyhow. > Regardless, I consider the Dynamic prop balancing a must. Good for the > whole airframe and all of it's components! > > Jim in Kelowna opinion, do not archive ________________________________ Message 20 ____________________________________ Time: 08:09:13 PM PST US Subject: Re: RV-List: [Fwd: [VAF Mailing List] RV-6A Down - not fatal] From: Kendel McCarley --> RV-List message posted by: Kendel McCarley Looks like he let the front of that truck absorb a lot of the energy. I wouldn't have thought it a good idea, but the guy left the aircraft with minor injuries. do not archive ________________________________ Message 21 ____________________________________ Time: 08:26:38 PM PST US From: Ed Holyoke Subject: RV-List: Engine trouble @ Valkaria --> RV-List message posted by: Ed Holyoke Howdy listers, Developed some engine trouble today coming back from Sun'n'Fun. #1 cylinder EGT began to run a couple hundred degrees lower than normal and a kinda slapping sound like an exhaust leak was audible. The EGT kept decreasing and finally stabilized at around 950 or so. It had been running over 1400 before. Engine is very rough. The good folks at the X59 EAA hangar have kindly offered me the use of the hangar and compression tester for tomorrow. I'm going to be there pretty early to uncowl and such. If there's any engine gurus in the neighborhood, I'd be much obliged if you'd offer some advice. We may be in the market for a cylinder shop that can do a fairly quick turnaround somewhere near here, too. My cell # is : 818 723-8272 As you can see by my San Fernando Valley, CA area code, I'm a long ways from home. Thanks, Ed Holyoke ________________________________ Message 22 ____________________________________ Time: 08:39:54 PM PST US From: Subject: RV-List: Proposed MT prop AD --> RV-List message posted by: Proposed "AD" for MT propellers http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgADNPRM.nsf/0/9D764C3BEA27ADC786256FDB005CB285?OpenDocument --------------------------------- ________________________________ Message 23 ____________________________________ Time: 08:44:55 PM PST US From: "Bob Perkinson" Subject: RE: RV-List: [Fwd: [VAF Mailing List] RV-6A Down - not fatal] --> RV-List message posted by: "Bob Perkinson" It also looks like he had newly installed fuel tanks, or they weren't installed when the plane was painted. do not archive Bob Perkinson Hendersonville, TN. -----Original Message----- From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com]On Behalf Of Kendel McCarley Subject: Re: RV-List: [Fwd: [VAF Mailing List] RV-6A Down - not fatal] --> RV-List message posted by: Kendel McCarley Looks like he let the front of that truck absorb a lot of the energy. I wouldn't have thought it a good idea, but the guy left the aircraft with minor injuries. do not archive ________________________________ Message 24 ____________________________________ Time: 10:28:03 PM PST US From: HCRV6@aol.com Subject: Re: RV-List: RV Down? - CNN Headline News --> RV-List message posted by: HCRV6@aol.com According to the local news here in the Bay Area he was taking off from Hayward and lost power. The pilot successfully put it down in a parking lot with, according to the news reporter, minor injuries. The airplane looks pretty badly bent. An N-number search indicates the airplane is registered to Richard Crowe from Oxnard, anyone know him. Apparently he was not the builder. Thats all I know. Harry Crosby RV-6 N16CX, 61 hours. ________________________________ Message 25 ____________________________________ Time: 10:56:18 PM PST US From: "randall" Subject: Re: RV-List: [Fwd: [VAF Mailing List] RV-6A Down - not fatal] --> RV-List message posted by: "randall" > It also looks like he had newly installed fuel tanks, or they weren't > installed when the plane was painted. > Yeah and elevators and rudder. Curious.