From: krnet-bounces@mylist.net To: John Bouyea Subject: KRnet Digest, Vol 346, Issue 73 Date: 8/16/2004 3:57:49 PM Send KRnet mailing list submissions to krnet@mylist.net To subscribe or unsubscribe via the World Wide Web, visit http://mylist.net/listinfo/krnet or, via email, send a message with subject or body 'help' to krnet-request@mylist.net You can reach the person managing the list at krnet-owner@mylist.net When replying, please edit your Subject line so it is more specific than "Re: Contents of KRnet digest..." Today's Topics: 1. BLOG updated - some budget details (Duncan) 2. Compass dip (Martindale Family) 3. hurricane damage (StRaNgEdAyS) 4. Re: hurricane damage (Dan Heath) 5. Re: hurricane damage (Mark Jones) 6. Hurricane Charley (Colin & Bev Rainey) 7. Re: Fuselage dimensions and shape (Mark Langford) 8. Re: hurricane damage (Mark Langford) 9. Re: hurricane damage (Linda Warner) 10. Re: Fuselage dimensions and shape (VIRGIL N SALISBURY) 11. Re: hurricane damage (Ray Fuenzalida) 12. Gathering update (larry flesner) 13. hurricane damage (larry flesner) 14. RE: Compass dip (Wood, Sidney M.) 15. RE: Gathering update (Mark Jones) 16. Re: Compass dip (VIRGIL N SALISBURY) 17. Dynon EFIS (Stephen Jacobs) 18. Re: Gathering update (JSMONDAY@aol.com) 19. Newbold (Dene Collett (SA)) 20. RE: hurricane damage (Doug Rupert) 21. Re: Dynon EFIS (Charles Buddy & Cheryl Midkiff) 22. RE: Dynon EFIS (Wood, Sidney M.) 23. Re: hurricane damage (FIXERJONES@aol.com) 24. Re: hurricane damage (Orma) 25. gathering update (larry flesner) ---------------------------------------------------------------------- Message: 1 Date: Mon, 16 Aug 2004 20:45:14 +1200 From: Duncan Subject: KR> BLOG updated - some budget details To: krnet Message-ID: <6.1.2.0.2.20040816204303.04659ec0@styx> Content-Type: text/plain; charset="us-ascii"; format=flowed Hi, If this sort of thing interests you, I've updated my budget pages to reflect what the project has cost so far. Duncan of Devonport KR2-S Plans: #9792, #1184 Auckland, New Zealand ------------------------------ Message: 2 Date: Mon, 16 Aug 2004 18:47:56 +1000 From: "Martindale Family" Subject: KR> Compass dip To: "KRnet" Message-ID: <001c01c4836d$bad658a0$75a0fea9@athlon2400> Content-Type: text/plain; charset="iso-8859-1" Folks My Airpath type dash compass seems to fluctuate through 10 degrees one way on easterly and the opposite on westerly headings when the tail is lifted on the ground to level attitude but not on north or south headings. I think this has something to do with the dip setting. Does anyone know how to change these compasses from north to south hemisphere settings. Does the card have a different slot underneath to take the pivot point? Is it easy to change? Need to know before I hack into it. John The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: johnjane@chc.net.au ------------------------------ Message: 3 Date: Mon, 16 Aug 2004 20:13:45 +1000 From: "StRaNgEdAyS" Subject: KR> hurricane damage To: "KRnet" Message-ID: <095c01c48379$b898f550$0101a8c0@server> Content-Type: text/plain; charset="iso-8859-1" Just saw some pics on the AVweb site of the Charlies' mayhem, is that a KR about 2/3 of the way down the page? http://www.avweb.com/news/features/187931-1.html Absolutely shocking damage! Commiserations to all who weathered it! Peter Bancks strangedays@dodo.com.au http://www.homebuiltairplanes.com http://canardaviationforum.dmt.net ------------------------------ Message: 4 Date: Mon, 16 Aug 2004 06:16:28 -0400 (Eastern Standard Time) From: "Dan Heath" Subject: Re: KR> hurricane damage To: "krnet@mylist.net" Message-ID: <4120897C.00000D.01756@COMPUTER> Content-Type: Text/Plain; charset="iso-8859-1" I sure believe that it is. "There is a time for building and a time for GOING TO THE GATHERING, and the time for building has long since expired." See you in Mt. Vernon - 2004 - KR Gathering http://KRGathering.org See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC -------Original Message------- From: KRnet Date: 08/16/04 06:12:49 To: KRnet Subject: KR> hurricane damage Just saw some pics on the AVweb site of the Charlies' mayhem, is that a KR about 2/3 of the way down the page? http://www.avweb.com/news/features/187931-1.html Absolutely shocking damage! Commiserations to all who weathered it! Peter Bancks strangedays@dodo.com.au http://www.homebuiltairplanes.com http://canardaviationforum.dmt.net _______________________________________ to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 5 Date: Mon, 16 Aug 2004 05:48:33 -0500 From: "Mark Jones" Subject: Re: KR> hurricane damage To: "KRnet" Message-ID: <001401c4837e$93a1f800$6401a8c0@wi.rr.com> Content-Type: text/plain; charset="iso-8859-1" Well, that sure is Diehl gear and sure looks like a Dragonfly canopy and an RF48 airfoil. If I were a gambling man, I would bet that it is. Any idea who's? Mark Jones (N886MJ) Wales, WI USA E-mail me at flykr2s@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html ----- Original Message ----- From: "StRaNgEdAyS" To: "KRnet" Sent: Monday, August 16, 2004 5:13 AM Subject: KR> hurricane damage > Just saw some pics on the AVweb site of the Charlies' mayhem, is that > a KR about 2/3 of the way down the page? > http://www.avweb.com/news/features/187931-1.html > Absolutely shocking damage! > Commiserations to all who weathered it! > Peter Bancks > strangedays@dodo.com.au > http://www.homebuiltairplanes.com http://canardaviationforum.dmt.net > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 6 Date: Mon, 16 Aug 2004 07:01:15 -0400 From: "Colin & Bev Rainey" Subject: KR> Hurricane Charley To: "KRnet" Message-ID: <00dd01c48380$59d6fa10$69ee0843@RaineyDay> Content-Type: text/plain; charset="iso-8859-1" Well wanted everyone to know that N96TA is fine and came though her trial by fire (hurricane) unscathed! If you have been to the website she looks just like she did when I took the pictures on the ramp. I feel for the guys in the nearby T-Hangars because they are hurting. Their doors got blown in on them. The plane next to us received a big hole in the tail boom due to flying debris. I think I should get a sign off just for surviving this thing, Hahaha! Our hearts and prayers go out to any and all who have losses. Please pray for the 16 dead here in Florida. Now if I can just clear away enough of these fallen tree branches to find my FAA Inspector.... Colin & Bev Rainey KR2(td) N96TA Sanford, FL crainey1@cfl.rr.com http://kr-builder.org/Colin/index.html ------------------------------ Message: 7 Date: Mon, 16 Aug 2004 06:54:16 -0500 From: "Mark Langford" Subject: Re: KR> Fuselage dimensions and shape To: "KRnet" Message-ID: <009801c48387$c1e88040$5e0ca58c@net.tbe.com> Content-Type: text/plain; charset="iso-8859-1" "Duncan of Devonport" wrote: > I know this question has been asked already, but I'm still uncertain > about this... Basically, I have three questions: You're right, this has been answered several times, but I can see how searching the archives for it might be tedious. And since nobody else has bitten, I'll give it a shot. > I have a set of KR2-S plans, which as we know has an extra bay added > to the > KR2 plans (ie lengthened by 14" aft of the cabin). Based on best > practice as evolved here on KRNet, by how much (in addition to this) > should I lengthen each bay aft of the cabin? And do I lengthen the > bays forward of the firewall? The politically correct reply would be to "consult an engineer", but since there's no documented problem with KR tails separating in flight (hurricanes don't count), I'd think you could get away with adding an inch and a half to each bay and not substantially change the geometry of the structure. One consideration that somebody pointed out is that the scarf joint for the plywood skin needs to fall on a wooden member, so keep that in mind, or simply add one more bay instead. Either way, you'll probably need more plywood, but in my eperience, you'll need more plywood than the plans call for anyway, so go ahead and buy another sheet while you're getting the rest. I wouldn't lengthen the fuselage in front of the spar more than two inches, unless you're going to put a light engine in it. > If I widen the cabin to 40", this will effectively reduce the area of > the wings, since the cockpit is now encroaching on the wing root by a > few inches on each side. Do I lengthen the spars/wings by the same > amount to compensate for this encroachment? I wouldn't bother, considering the slight width change that you're talking about. "Wing area" typically includes the area of the fuselage between the wings anyway. > Finally, question 3 > If I widen the cockpit to (say) 40" at the top, by how much should I > widen the bottom of the cockpit? By an equal amount? And a > supplementary question... Is there any fundamental or aesthetic > reason why the cockpit should be wider at the top than at the bottom? > Could the sides not be perpendicular? You can either widen the bottom the same amount as you widened the top, or you can make the sides perpendicular to the bottom. Your choice. You wouldn't be the first to make the sides vertical. Any detrimental aero tradeoffs would be minor, and it would be somewhat easier to build. There's more of this kind of stuff located at http://home.hiwaay.net/~langford/kopinion.html . Mark Langford, Huntsville, AL N56ML at hiwaay.net see KR2S project N56ML at http://home.hiwaay.net/~langford ------------------------------ Message: 8 Date: Mon, 16 Aug 2004 07:10:10 -0500 From: "Mark Langford" Subject: Re: KR> hurricane damage To: "KRnet" Message-ID: <00ac01c48389$fa594890$5e0ca58c@net.tbe.com> Content-Type: text/plain; charset="iso-8859-1" > Well, that sure is Diehl gear and sure looks like a Dragonfly canopy > and an > RF48 airfoil. If I were a gambling man, I would bet that it is. Any > idea who's? Definitely a KR2, probablyl an S. There are only two that appear in the database, and one is in Lee County, registered as N925BW, to Bob Wetzel of Cape Coral. But since this one had no wings, maybe it wasn't registered yet, so who knows. I'm pretty amazed that the tail was blown off and the canopy stayed attached though. I want to see those canopy latches! Mark Langford, Huntsville, AL N56ML at hiwaay.net see KR2S project N56ML at http://home.hiwaay.net/~langford ------------------------------ Message: 9 Date: Mon, 16 Aug 2004 08:44:10 -0400 From: jaslkw@webtv.net (Linda Warner) Subject: Re: KR> hurricane damage To: krnet@mylist.net (KRnet) Message-ID: <16418-4120AC1A-2540@storefull-3137.bay.webtv.net> Content-Type: Text/Plain; Charset=US-ASCII Hi all. That damged KR2S may have been the one that Bob Wetzel built. He passed away several years ago and I don't know what became of it. I know that the last time I saw it, it was painted all white. How about you, Ron Freiberger, are you still on the net. He knew the plane too. John Sickafoose Naples, Fl (but in Ohio for the summer - to escape the hurriacanes) ------------------------------ Message: 10 Date: Mon, 16 Aug 2004 09:09:45 -0400 From: VIRGIL N SALISBURY Subject: Re: KR> Fuselage dimensions and shape To: krnet@mylist.net Message-ID: <20040816.090946.940.0.virgnvs@juno.com> Content-Type: text/plain; charset=us-ascii It is a much simpler build to make the sides straight than taper top to bottom, Virg On Sun, 15 Aug 2004 22:17:00 -0400 (Eastern Standard Time) "Dan Heath" writes: > RE: Is there any fundamental or aesthetic reason why the cockpit > should be > wider at the top than at the bottom? > > > > If your butt is the same width as your shoulders, then why not make > it > streight? However, I don't think it would look as good and would > also cause > it to have more frontal area. If I were making it wider, I would > maintain > the same proportions. > > I am not building an S, but I don't think the wider fuselage will > require > longer wings. > > Your results will vary! > > "There is a time for building and a time for GOING TO THE GATHERING, > and the > time for building has long since expired." > > See you in Mt. Vernon - 2004 - KR Gathering http://KRGathering.org > > See N64KR at http://KR-Builder.org - Then click on the pics > > Daniel R. Heath - Columbia, SC > > > > > > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > Virgil N. Salisbury - AMSOIL www.lubedealer.com/salisbury Miami ,Fl ------------------------------ Message: 11 Date: Mon, 16 Aug 2004 06:23:10 -0700 (PDT) From: Ray Fuenzalida Subject: Re: KR> hurricane damage To: KRnet Message-ID: <20040816132310.72965.qmail@web42006.mail.yahoo.com> Content-Type: text/plain; charset=us-ascii WOW! Amazing stuff. Either planes are really flimsy or you don't mess with Mother Nature. Mark Jones wrote: Well, that sure is Diehl gear and sure looks like a Dragonfly canopy and an RF48 airfoil. If I were a gambling man, I would bet that it is. Any idea who's? Mark Jones (N886MJ) Wales, WI USA E-mail me at flykr2s@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html ----- Original Message ----- From: "StRaNgEdAyS" To: "KRnet" Sent: Monday, August 16, 2004 5:13 AM Subject: KR> hurricane damage > Just saw some pics on the AVweb site of the Charlies' mayhem, is that > a KR about 2/3 of the way down the page? > http://www.avweb.com/news/features/187931-1.html > Absolutely shocking damage! > Commiserations to all who weathered it! > Peter Bancks > strangedays@dodo.com.au > http://www.homebuiltairplanes.com http://canardaviationforum.dmt.net > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html _______________________________________ to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html --------------------------------- Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! ------------------------------ Message: 12 Date: Mon, 16 Aug 2004 08:30:56 -0500 From: larry flesner Subject: KR> Gathering update To: KRnet Message-ID: <3.0.6.32.20040816083056.007c6a40@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" Netters, I just got an update from Bob Lee and here are some of the numbers for the Gathering as it stands right now. 73 preregistrations with 32 states and Canada represented. Willie Wilson is planning on attending from England also. 18 attendies indicated they intend to fly their KR's to the Gathering. That does not include the several "overly optimistic" builders that said they would fly in but will not have their projects completed (ML & MJ). Good weather could make this years Gathering a record setting event! Don't forget to go to the www.krgathering.org site and print out a flyer to post at the local airports. The discount price for the Holiday Inn rooms is good only till the end of this month. If you plan to book the Holiday Inn, get it done now. Other hotel info is available at the Gathering web site. If you are a KR builder, flyer, or dreamer, Mt.Vernon will be the place to be in September! Larry Flesner - 2004 Gathering Host ------------------------------ Message: 13 Date: Mon, 16 Aug 2004 08:52:41 -0500 From: larry flesner Subject: KR> hurricane damage To: KRnet Message-ID: <3.0.6.32.20040816085241.008397d0@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" At 06:23 AM 8/16/04 -0700, you wrote: >WOW! Amazing stuff. Either planes are really flimsy or you don't mess with Mother Nature. > +++++++++++++++++++++++++++++++++++++++++++++++++++ I hardly think we can pass judgement on the "flimsy" planes after seeing what it (Charlie) did in reducing the steel structures to rubble!! There is no way to imagine the power Mother Nature has at her disposal. Let the lucky ones among us be grateful......... Larry Flesner ------------------------------ Message: 14 Date: Mon, 16 Aug 2004 09:59:26 -0400 From: "Wood, Sidney M." Subject: RE: KR> Compass dip To: "KRnet" Message-ID: Content-Type: text/plain; charset="iso-8859-1" John, You have rediscovered what most pilots refer to as the Northerly turning error. It has everything to do with the dip angle of the earth's magnetic field. Your Airpath compass can only respond to the horizontal component (where you are located) of the three-dimensional earth magnetic field. The angle between compass pivot line and the magnetic dip angle will produce a turning force on the compass card whenever there is some relative motion such as raising or lowering the tail, or turning the aircraft in flight (banking included). In the Northern (magnetic) hemisphere, turning through Northern headings will cause the compass indication to lag behind the actual heading during the turn. Easterly or Westerly headings will indicate close to the actual heading. Southern heading turns will cause the compass to lead the actual heading. In the Southern hemisphere these Northerly and Southerly turning errors are reversed due to the opposite magnetic dip angle. At the Earth's magnetic equator the dip angle is zero and these turning errors disappear, but the pitch and bank induced errors will remain. I don't think there is any way to change the above physics in your compass. Airpath does sell compasses for use in the Southern hemisphere for $15 extra. These compasses are referred to as "south field". The manufacturer reverses the magnetic field of the compass card, and reverses the numbers on the card by 180 degrees to get the proper read out. This then will give the same Northerly turning errors indication as found in the Northern hemisphere. You can adjust your compass to compensate for local magnetic effects due to the iron in your engine or magnetic fields generated by your electrical system. That's why you should make the compass adjustments with the engine running and electrical equipment turned on as directed in the manufacturer instructions. My Dynon EFIS does not exhibit turning errors, because it senses and responds to the total Earth magnetic field vector. That includes direction and strength of the magnetic field. The Dynon electronic sensor can tell the difference between the Earth's magnetic field and induced magnetic fields produced by the aircraft installation. Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD USA Sidney.wood@titan.com -----Original Message----- From: krnet-bounces@mylist.net [mailto:krnet-bounces@mylist.net] On Behalf Of Martindale Family Sent: Monday, August 16, 2004 4:48 AM To: KRnet Subject: KR> Compass dip Folks My Airpath type dash compass seems to fluctuate through 10 degrees one way on easterly and the opposite on westerly headings when the tail is lifted on the ground to level attitude but not on north or south headings. I think this has something to do with the dip setting. Does anyone know how to change these compasses from north to south hemisphere settings. Does the card have a different slot underneath to take the pivot point? Is it easy to change? Need to know before I hack into it. John The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: johnjane@chc.net.au _______________________________________ to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 15 Date: Mon, 16 Aug 2004 10:12:43 -0500 From: Mark Jones Subject: RE: KR> Gathering update To: 'KRnet' Message-ID: <370D915E4564D611B0530050DABB9FC201902B02@SIC-EXCHANGE> Content-Type: text/plain Hey Larry, you forgot to mention....only 38 more days till the Gathering. Mark Jones -----Original Message----- From: larry flesner [mailto:flesner@midwest.net] Sent: Monday, August 16, 2004 8:31 AM To: KRnet Subject: KR> Gathering update Netters, I just got an update from Bob Lee and here are some of the numbers for the Gathering as it stands right now. 73 preregistrations with 32 states and Canada represented. Willie Wilson is planning on attending from England also. 18 attendies indicated they intend to fly their KR's to the Gathering. That does not include the several "overly optimistic" builders that said they would fly in but will not have their projects completed (ML & MJ). Good weather could make this years Gathering a record setting event! Don't forget to go to the www.krgathering.org site and print out a flyer to post at the local airports. The discount price for the Holiday Inn rooms is good only till the end of this month. If you plan to book the Holiday Inn, get it done now. Other hotel info is available at the Gathering web site. If you are a KR builder, flyer, or dreamer, Mt.Vernon will be the place to be in September! Larry Flesner - 2004 Gathering Host _______________________________________ to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 16 Date: Mon, 16 Aug 2004 12:24:48 -0400 From: VIRGIL N SALISBURY Subject: Re: KR> Compass dip To: krnet@mylist.net Message-ID: <20040816.122854.940.1.virgnvs@juno.com> Content-Type: text/plain; charset=us-ascii This was covered during your Flight Training. It is acting normally, Virg On Mon, 16 Aug 2004 18:47:56 +1000 "Martindale Family" writes: > Folks > > My Airpath type dash compass seems to fluctuate through 10 degrees > one way on easterly and the opposite on westerly headings when the > tail is lifted on the ground to level attitude but not on north or > south headings. I think this has something to do with the dip > setting. Does anyone know how to change these compasses from north > to south hemisphere settings. Does the card have a different slot > underneath to take the pivot point? Is it easy to change? Need to > know before I hack into it. > > John > > The Martindale Family > 29 Jane Circuit > TOORMINA NSW 2452 > AUSTRALIA > > phone: 61 2 66584767 > email: johnjane@chc.net.au _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > Virgil N. Salisbury - AMSOIL www.lubedealer.com/salisbury Miami ,Fl ------------------------------ Message: 17 Date: Mon, 16 Aug 2004 20:14:17 +0200 From: "Stephen Jacobs" Subject: KR> Dynon EFIS To: "'KRnet'" Message-ID: <000001c483bc$dc0baee0$cf64a8c0@home> Content-Type: text/plain; charset="us-ascii" My Dynon EFIS does not exhibit turning errors, because it senses and responds to the total Earth magnetic field vector. +++++++++++++++++++ Hey Sid - I am about to order 4 Dynon's (EFIS D10) and I still have no first hand info on their performance. I had some reservations and communicated with someone at Dynon (Doug Medema) - he answered my questions, but still left me wondering. I would be interested in any advice or info you may be prepared to part with. I am particularly interested in the AH function during very slow turns - have you noted any tendency for the instrument to lag or become "lost"? Would you be comfortable with just a D10 in IF conditions. I am referring to the functionality, not the reliability. Did you use their fancy AoA pitot? You comment about the compass is interesting - despite reading the blurb many times, I did not realize that this facility existed. I will happily chop 4 x $169 off the order. Take care Steve J ------------------------------ Message: 18 Date: Mon, 16 Aug 2004 15:05:08 EDT From: JSMONDAY@aol.com Subject: Re: KR> Gathering update To: krnet@mylist.net Message-ID: Content-Type: text/plain; charset="US-ASCII" Add one more to the gathering!!! I will be attending as well.. and filling out the preregistration in a couple of minutes... John Monday KR2S Laguna Beach, CA ------------------------------ Message: 19 Date: Mon, 16 Aug 2004 21:07:19 +0200 From: "Dene Collett \(SA\)" Subject: KR> Newbold To: "krnet" Message-ID: <000301c483c4$ad2aaba0$37e5fea9@telkomsa127179> Content-Type: text/plain; charset="iso-8859-1" Hi Netheads A few years ago there was an article in "Kitplanes" about a motor developed by a guy by the name of Newbold. Does anybody know what happened to this motor? If I remenber, it put out something like 50HP and weighed in at around 25#. Dene Collett KR2S-RT builder Port Elizabeth South Africa mailto: dene.collett@telkomsa.net P.S: checkout www.whisperaircraft.com ------------------------------ Message: 20 Date: Mon, 16 Aug 2004 15:52:39 -0400 From: "Doug Rupert" Subject: RE: KR> hurricane damage To: "'KRnet'" Message-ID: <001a01c483ca$98b90030$6404e440@office> Content-Type: text/plain; charset="us-ascii" I was at an air show last February at Punta Gorda airport and there was a KR2S sitting there although the pilot was nowhere to be seen. May have been it. Doug Rupert -----Original Message----- From: krnet-bounces+drupert=sympatico.ca@mylist.net [mailto:krnet-bounces+drupert=sympatico.ca@mylist.net] On Behalf Of Mark Langford Sent: Monday, August 16, 2004 8:10 AM To: KRnet Subject: Re: KR> hurricane damage > Well, that sure is Diehl gear and sure looks like a Dragonfly canopy > and an > RF48 airfoil. If I were a gambling man, I would bet that it is. Any > idea who's? ------------------------------ Message: 21 Date: Mon, 16 Aug 2004 13:24:38 -0700 From: "Charles Buddy & Cheryl Midkiff" Subject: Re: KR> Dynon EFIS To: "KRnet" Message-ID: <016c01c483cf$0e0712b0$6401a8c0@charlesmidkiff> Content-Type: text/plain; charset="iso-8859-1" Hi Stephen, Besides being employed as an engineer at Dynon, Doug Medema is a member of EAA Chapter 84 here in Everett, WA; and a home builder who built and is flying his RV-6, in which he has installed one of their Dynon instruments. Just thought I'd throw that out there for info. Bud Midkiff KR2S Lynnwood, WA email: c.midkiff@verizon.net web: http://mysite.verizon.net/res18ums/index.html ----- Original Message ----- From: "Stephen Jacobs" To: "'KRnet'" Sent: Monday, August 16, 2004 11:14 AM Subject: KR> Dynon EFIS > My Dynon EFIS does not exhibit turning errors, because it senses and > responds to the total Earth magnetic field vector. > > +++++++++++++++++++ > > Hey Sid - I am about to order 4 Dynon's (EFIS D10) and I still have no > first hand info on their performance. I had some reservations and > communicated with someone at Dynon (Doug Medema) - he answered my > questions, but still left me wondering. ------------------------------ Message: 22 Date: Mon, 16 Aug 2004 16:54:31 -0400 From: "Wood, Sidney M." Subject: RE: KR> Dynon EFIS To: "KRnet" Message-ID: Content-Type: text/plain; charset="iso-8859-1" Steve, I have not flown my KR-2 yet. My experience is limited to talking with the hardware and software engineers at Dynon, playing with the D10 on the bench, and Navy development programs as a navigation systems consultant. The Navy deployed this same magnetometer technology about 6 years ago in their tactical aircraft with excellent results. The military environmental requirements and operating conditions will put more wear and tear on avionics in six months than we will put on a KR-2 in twenty years. None of the military magnetometer systems have any lag or tendency to drop sync or get "lost". The Dynon EFIS D10 keeps the heading gyro constantly slaved to the magnetic heading sensor. There is no drift in heading, no lead or lag, no over shoot. You never have to reset the heading gyro every few minutes as you must with a mechanical directional gyro. The gyros in the D10 are all solid-state digital electronic units. The attitude gyros in the D10 are constantly being leveled using solid state digital accelerometers. The leveling rate is controlled by the digital processor and takes into account the maneuvering dynamics and the three-axis magnetic attitude sensing as well. This is a far cry from the mechanical gyros that try to level through uncoordinated turns and aerobatics and made you fly straight and level to get any reasonably accurate pitch and roll info. The D10 tracks the flight dynamics and modifies the leveling routine to optimize the display. There is a small error in the attitude during extreme maneuvers , but you will not be able to see it on the display. The D10 does flag the attitude display when you do stuff like inverted spins or hammerhead stalls. It will recover in less than 5 seconds after reasonably level flight is resumed. This kind of test is easy to do on the bench. The D10 is not certified for Instrument Flight Rules applications and should not be relied on in Instrument Meteorological Conditions. There are several certified EFIS brands available for IFR use, with corresponding price tags to match. The D10 does provide all the FAA-required flight instrument displays for VFR, including the magnetic compass. I have no other flight instruments but the D10 in N6242. You should install backup electrical power. The D10 uses external 13.6 volts dc, external backup 13.6 volts dc (another battery), and internal rechargeable battery power for triply redundant power sources, as you may choose. I am using the first two sources without the internal batteries. Just another cost item I felt was not justified on a VFR bird. Incidentally, the Rutan Space Ship One uses the D10 as a backup to the primary EFIS. I did not use the AoA function, because I had already installed my pitot-static probe and did not want to put in another (separate) static port and plumbing. AoA is certainly a useful function. I have done a few goofy things while flying airplanes, but I have never inadvertently stalled an airplane. My flying is just not that close to the edge of the envelope. Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD USA Sidney.wood@titan.com ___________________________________________________________________ My Dynon EFIS does not exhibit turning errors, because it senses and responds to the total Earth magnetic field vector. +++++++++++++++++++ Hey Sid - I am about to order 4 Dynon's (EFIS D10) and I still have no first hand info on their performance. I had some reservations and communicated with someone at Dynon (Doug Medema) - he answered my questions, but still left me wondering. I would be interested in any advice or info you may be prepared to part with. I am particularly interested in the AH function during very slow turns - have you noted any tendency for the instrument to lag or become "lost"? Would you be comfortable with just a D10 in IF conditions. I am referring to the functionality, not the reliability. Did you use their fancy AoA pitot? You comment about the compass is interesting - despite reading the blurb many times, I did not realize that this facility existed. I will happily chop 4 x $169 off the order. Take care Steve J ------------------------------ Message: 23 Date: Mon, 16 Aug 2004 17:36:49 EDT From: FIXERJONES@aol.com Subject: Re: KR> hurricane damage To: krnet@mylist.net Message-ID: <1ca.28b9714f.2e5282f1@aol.com> Content-Type: text/plain; charset="US-ASCII" the kr at punta gorda i saw & talked to the owner at the airshow. it was in dire need as the owner explaned, from what i saw of the airframe when it was in one piece, it was probly for the better what happened. the owner was debating weather to cut it up & start over steve jones n212kr ------------------------------ Message: 24 Date: Mon, 16 Aug 2004 17:57:08 -0400 From: "Orma" Subject: Re: KR> hurricane damage To: "KRnet" Message-ID: <000c01c483db$fac75360$442bd445@ROBBINS1> Content-Type: text/plain; charset="iso-8859-1" Either planes are really flimsy or you don't mess with Mother Nature. Perhaps something hit the tail section and caused the damage Orma Southfield, MI N110LR celebrating 20 years To the gathering or bust ------------------------------ Message: 25 Date: Mon, 16 Aug 2004 17:51:14 -0500 From: larry flesner Subject: KR> gathering update To: KRnet Message-ID: <3.0.6.32.20040816175114.0083c370@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" Just passing along a comment from John's preregistration form if anyone is interested. Larry Flesner =========================================================== Flying in Thursday around 6pm at STL and flying out Sunday 11:30 STl have rental card can give rides John Monday JSMONDAY@aol.com ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 346, Issue 73 ************************************** ================================== ABC Amber Outlook Converter v4.20 Trial version ==================================