From: krnet-bounces@mylist.net To: John Bouyea Subject: KRnet Digest, Vol 346, Issue 4 Date: 3/23/2004 9:00:14 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. Larry Flesner (Stephen Jacobs) 2. Re: Balancing Ailerons (Ross Youngblood) 3. Re: Larry Flesner (Gavin Donohoe) 4. Re: General Consensus - Trim tab switch movement (Dan Heath) 5. Re: General Consensus - Trim tab switch movement (Mark Jones) 6. RE: Larry Flesner (Merl Manning) 7. Re: Balancing Ailerons (Donald Reid) 8. trim switch (larry flesner) 9. cockpit size (larry flesner) 10. Importing project to Canada (Chris Angela Barber) 11. Re: Re: KR> Balancing Ailerons (wdecker@cox.net) 12. Re: General Consensus-trim travel (Joseph H. Horton) 13. Resubscribe (paulwasp@webtv.net) 14. Re: Re: KR> Balancing Ailerons (joe) 15. aileron trim (joe) 16. Re: cockpit size (Dean Cooper) 17. Re: Importing project to Canada (Peter Johnson) ---------------------------------------------------------------------- Message: 1 Date: Tue, 23 Mar 2004 10:54:32 +0200 From: "Stephen Jacobs" Subject: KR> Larry Flesner To: "'KRnet'" Message-ID: <000201c410b4$82b08260$6464a8c0@homedesktop> Content-Type: text/plain; charset="us-ascii" Larry I am trying to finalize the cockpit width - I have been studying pictures of aircraft with an occupant in the pilot's seat - in particular your bird and that of Chris Gardiner - both appear to have adequate space - but I am not sure how big the occupant is. How wide would you make it if you built another 2S and wanted 2 seats? I was surprised at how far you are seated away from the panel in your airplane - I suspect that you have no shortage of legroom - looks like a good 4" of headroom? Does anyone know how big a fellow Chris Gardiner is - he looks very comfortable in his KR? Maybe I trying an overkill with 1200 mm (47") Thanks Steve (askies"AT"microlink.zm) ------------------------------ Message: 2 Date: Tue, 23 Mar 2004 01:16:25 -0800 From: Ross Youngblood Subject: Re: KR> Balancing Ailerons To: KRnet Message-ID: Content-Type: text/plain; format=flowed; charset=iso-8859-15 I think Wolfgang's description regarding Eigen Frequencies is saying the same thing. Flutter is mechanical oscillation with positive feedback. I recall learning about Eigenvalues in linear algebra... but did not study aerospace or mechanical engineering... I suspect that reducing the "Eigen Frequency" is another term for trying to keep any harmonic oscillation low enough so that it doesn't feeback onto itself and cause the plane to damage itself. (i.e. prevent flutter). On Mon, 22 Mar 2004 19:31:01 -0600, Mark Jones wrote: > Wolfgang, > The reason to balance the ailerons is not to achieve equal control > balance > between the two ailerons yet to achieve balance on the pivot point of the > aileron hinge to help eliminate flutter. Flutter is sudden and is seldom > recoverable before it destroys the control surface. Do a search in the > archives on flutter and you will have a nights worth of reading. > > 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 > > >> Hi Netters, >> >> I followed the balancing discussion for some time now, and to through >> some >> more fuel into the fire (or to just post a dumb question): Shouldn't the >> Ailerons balance each other, since if the left one goes down the right >> one >> goes up? I personally do not recall that we used balancing weights on >> the >> gliders we build at the glider group in Germany. >> >> There was only one reason to add counterweights to ailerons, and that >> was > to >> increase inertia of the system as to reduce Eigen-Frequency of the >> whole system to a manageable frequency. Schleicher Aircraft used an >> interesing method in the ASW-19, by putting lead into the top of the >> control stick. >> >> You may forgive me if the self balancing of the ailerons is not >> possible with the KR-2, as I am not yet fully familiar with the >> control mechanics. > I >> got my plans only a few weeks ago and still in the study phase. >> >> Wolfgang >> >> >> >> _______________________________________ >> 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 -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ ------------------------------ Message: 3 Date: Tue, 23 Mar 2004 19:50:43 +1000 From: "Gavin Donohoe" Subject: Re: KR> Larry Flesner To: "KRnet" Message-ID: <001201c410bc$4f3843c0$304d8690@oemcomputer> Content-Type: text/plain; charset="iso-8859-1" Go for 40 inches at the shoulders, that'll be heaps!!! Gav Australia ----- Original Message ----- From: "Stephen Jacobs" To: "'KRnet'" Sent: Tuesday, March 23, 2004 6:54 PM Subject: KR> Larry Flesner > Larry > > I am trying to finalize the cockpit width - I have been studying > pictures of aircraft with an occupant in the pilot's seat - in > particular your bird and that of Chris Gardiner - both appear to have > adequate space - but I am not sure how big the occupant is. > > How wide would you make it if you built another 2S and wanted 2 seats? > > I was surprised at how far you are seated away from the panel in your > airplane - I suspect that you have no shortage of legroom - looks like > a good 4" of headroom? > > Does anyone know how big a fellow Chris Gardiner is - he looks very > comfortable in his KR? > > Maybe I trying an overkill with 1200 mm (47") > > Thanks > Steve (askies"AT"microlink.zm) > > > > > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.634 / Virus Database: 406 - Release Date: 18/03/2004 ------------------------------ Message: 4 Date: Tue, 23 Mar 2004 05:55:29 -0500 (Eastern Standard Time) From: "Dan Heath" Subject: Re: KR> General Consensus - Trim tab switch movement To: "krnet@mylist.net" Message-ID: <406017A1.000032.03592@COMPUTER> Content-Type: Text/Plain; charset="iso-8859-1" Mark, With that switch and indicator, if you mounted it any other way, it would be upside down or sideways. I like it. See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC DanRH@KR-Builder.org See you in Mt. Vernon - 2004 - KR Gathering See our EAA Chapter 242 at http://EAA242.org ------------------------------ Message: 5 Date: Tue, 23 Mar 2004 05:59:26 -0600 From: "Mark Jones" Subject: Re: KR> General Consensus - Trim tab switch movement To: "KRnet" Message-ID: <001301c410ce$4a936ea0$6401a8c0@wi.rr.com> Content-Type: text/plain; charset="iso-8859-1" Actually, you can flip the switch upside down. Those are stick on labels and they provide labels which read both ways. 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: "Dan Heath" To: Sent: Tuesday, March 23, 2004 4:55 AM Subject: Re: KR> General Consensus - Trim tab switch movement > Mark, > > With that switch and indicator, if you mounted it any other way, it > would be > upside down or sideways. I like it. > > See N64KR at http://KR-Builder.org - Then click on the pics > > Daniel R. Heath - Columbia, SC > > DanRH@KR-Builder.org > > See you in Mt. Vernon - 2004 - KR Gathering > > See our EAA Chapter 242 at http://EAA242.org > > _______________________________________ > 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: Tue, 23 Mar 2004 07:38:23 -0600 From: "Merl Manning" Subject: RE: KR> Larry Flesner To: "KRnet" Message-ID: Content-Type: text/plain; charset="us-ascii" If you widen it to 40" at the shoulders will the "standard" canopy and rear turtle deck still fit? Merl Manning (merlm@netins.net) Eldora, Iowa -----Original Message----- From: krnet-bounces@mylist.net [mailto:krnet-bounces@mylist.net]On Behalf Of Gavin Donohoe Sent: Tuesday, March 23, 2004 3:51 AM To: KRnet Subject: Re: KR> Larry Flesner Go for 40 inches at the shoulders, that'll be heaps!!! Gav Australia ----- Original Message ----- From: "Stephen Jacobs" To: "'KRnet'" Sent: Tuesday, March 23, 2004 6:54 PM Subject: KR> Larry Flesner > Larry > > I am trying to finalize the cockpit width - I have been studying > pictures of aircraft with an occupant in the pilot's seat - in > particular your bird and that of Chris Gardiner - both appear to have > adequate space - but I am not sure how big the occupant is. > > How wide would you make it if you built another 2S and wanted 2 seats? > > I was surprised at how far you are seated away from the panel in your > airplane - I suspect that you have no shortage of legroom - looks like > a good 4" of headroom? > > Does anyone know how big a fellow Chris Gardiner is - he looks very > comfortable in his KR? > > Maybe I trying an overkill with 1200 mm (47") > > Thanks > Steve (askies"AT"microlink.zm) > > > > > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.634 / Virus Database: 406 - Release Date: 18/03/2004 _______________________________________ 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: 7 Date: Tue, 23 Mar 2004 08:43:59 -0500 From: Donald Reid Subject: Re: KR> Balancing Ailerons To: KRnet Message-ID: <5.0.2.1.0.20040323080915.01bf9f20@pop.erols.com> Content-Type: text/plain; charset="us-ascii"; format=flowed At 08:03 PM 3/22/2004 -0500, you wrote: >Shouldn't the >Ailerons balance each other, since if the left one goes down the right >one goes up? The ailerons, taken as a multi-body mechanical system, will naturally tend to self-balance. This is not the same as balance for flutter consideration. >There was only one reason to add counterweights to ailerons, and that >was to increase inertia of the system as to reduce Eigen-Frequency of >the whole system to a manageable frequency. You want to increase the natural frequency of the system. With an engine/prop combination, you can pass through a resonance frequency without damage. This is not the same with the wing. This entire area of discussion can't be condensed into a few paragraphs. The short answer is that the wing must be stiff to increase the natural frequency and the aileron should balanced. >Schleicher Aircraft used an interesing >method in the ASW-19, by putting lead into the top of the control >stick. This is probably not a weight for flutter consideration, but instead is used to alter the control forces. A so-called "bob" weight attached to the stick in such a way that normal gravity pulls the stick nose-up will need to be counteracted with aerodynamic force on the trim tab. Don Reid - donreid "at" erols.com Bumpass, Va Visit my web sites at: AeroFoil, a 2-D Airfoil Design And Analysis Computer Program: http://www.eaa231.org/AeroFoil/index.htm KR2XL construction: http://users.erols.com/donreid/kr_page.htm Aviation Surplus: http://users.erols.com/donreid/Airparts.htm EAA Chapter 231: http://eaa231.org Ultralights: http://usua250.org VA EAA State Fly-in: http://vaeaa.org ------------------------------ Message: 8 Date: Tue, 23 Mar 2004 07:53:43 -0600 From: larry flesner Subject: KR> trim switch To: KRnet Message-ID: <3.0.6.32.20040323075343.008b5200@pop.midwest.net> Content-Type: text/plain; charset="us-ascii" That is why I would like a general consensus of how a panel mounted elevator trim rocker switch should be activated. >Mark Jones (N886MJ) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Mark, Go with what you have mounted and fly it. My switch is mounted in a small box on the left side wall just under and behind the panel. Mine is rigged just opposite and I have to think about it each time I use it. I plan to switch it to your configuration. 27 hours and counting!!!!!!! Larry Flesner ------------------------------ Message: 9 Date: Tue, 23 Mar 2004 07:53:55 -0600 From: larry flesner Subject: KR> cockpit size To: KRnet Message-ID: <3.0.6.32.20040323075355.00860340@pop.midwest.net> Content-Type: text/plain; charset="iso-8859-1" >How wide would you make it if you built another 2S and wanted 2 seats? >I was surprised at how far you are seated away from the panel in your >airplane - I suspect that you have no shortage of legroom - looks like >a good 4" of headroom? Steve (askies"AT"microlink.zm) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ My KR is standard dimensions in the cockpit area except for the canopy height. I would like to have several more inches in width but just how wide I couldn't Say. My legroom is standard KR2. I believe the 2S gives you a few more inches from the forward spar to the firewall. That should probably be o.k. unless you are unusually tall. The changes I made to accommodate my 6 foot 4 inch body were as follows. I raised the forward deck 1 ¾ inches at the instrument panel and then cut the instrument panel to have the bottom edge even with the top longerons. You will notice it the photos that my forward deck raises toward the windshield. Most KR's are flat in that area. My entire windshield, gullwing door, turtledeck was raised to give me approx 3 to 4 inches of head room. I extended my verticals approx 7 inches above the top longerons before radiusing over to the top. These changes are one contributing factor to my lower than normal cruise with an 0-200 but were well worth it in comfort. As for the head room, build your seat first and have someone measure the height you need while you set in the seat and built to that dimension. Larry Flesner ------------------------------ Message: 10 Date: Tue, 23 Mar 2004 09:40:47 -0500 From: "Chris Angela Barber" Subject: KR> Importing project to Canada To: krnet@mylist.net Message-ID: Content-Type: text/plain; format=flowed Does anyone know what's involved in buying a project from the U.S. and importing it into Canada to complete? Or can anyone point me into the right direction to look? Thanks, Chris Barber _________________________________________________________________ Free yourself from those irritating pop-up ads with MSn Premium. Get 2months FREE* http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=http://hotmail.com/enca&HL=Market_MSNIS_Taglines ------------------------------ Message: 11 Date: Tue, 23 Mar 2004 11:54:05 -0500 From: Subject: Re: Re: KR> Balancing Ailerons To: KRnet Message-ID: <20040323165405.LMY1670.lakemtao04.cox.net@smtp.east.cox.net> Content-Type: text/plain; charset=ISO-8859-1 Exactly my point. Ailerons are part of the dynamic system on the wing that can induce flutter, and it does so if the frequency at which the aileron flutters meets the frequence of the wing. Typically you try to make the wing as stiff as possible to increase the harmonic frequencies, and you try to decrease the harmonic frequencies of the ailerons to keep them below the harmonics of the wing. During my time at the Technical University Braunschweig I was involved building the SB-13 glider, which does not have a tail (I just tried to check out a link that would show a picture, but had to find out that something on the web page of the Academic Glidergroup does not work. I'll post it as soon as I find another one). During the development phase of this glider we built a 1:3 scale model, on which we experienced some extreme cases of fluttering. So we started doing calculations on this and found, that we had at least two different modes of flutter. The main reason for the occurance of flutter was the fact, that the tail was missing on this design, as the tail with it's long arm works as a great dampener, thus eliminating the oscillations created by a combination of warping and swinging of the main wing. The solution was to increase the stiffness of the wing so that the harmonic frequency of the wing (including the warp modes) was high enough that it flutter could not be induced within the speed enveloped we designed the aircraft for. Bottom line is, that you may still experience flutter, even if you perfectly balance your ailerons, if they are build light and if their harmonic frequencies coincide with the wings harmonic frequency. Just adding to the whole confusion about fluttering, but as it was pointed out before, it is indeed an extremely complex area. "Oscillations" was a mandatory class in my studies, and almost everybody in my class hated it!! Wolfgang > > From: Ross Youngblood > Date: 2004/03/23 Tue AM 04:16:25 EST > To: KRnet > Subject: Re: KR> Balancing Ailerons > > I think Wolfgang's description regarding Eigen Frequencies > is saying the same thing. Flutter is mechanical oscillation with > positive feedback. I recall learning about Eigenvalues in linear > algebra... but did not study aerospace or mechanical engineering... I > suspect that reducing the "Eigen Frequency" is another term for trying > to keep any harmonic oscillation low enough so that it doesn't feeback > onto itself and cause the plane to damage itself. (i.e. prevent > flutter). > > > On Mon, 22 Mar 2004 19:31:01 -0600, Mark Jones > wrote: > > > Wolfgang, > > The reason to balance the ailerons is not to achieve equal control > > balance > > between the two ailerons yet to achieve balance on the pivot point of the > > aileron hinge to help eliminate flutter. Flutter is sudden and is seldom > > recoverable before it destroys the control surface. Do a search in the > > archives on flutter and you will have a nights worth of reading. > > > > 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 > > > > > >> Hi Netters, > >> > >> I followed the balancing discussion for some time now, and to > >> through > >> some > >> more fuel into the fire (or to just post a dumb question): Shouldn't the > >> Ailerons balance each other, since if the left one goes down the right > >> one > >> goes up? I personally do not recall that we used balancing weights on > >> the > >> gliders we build at the glider group in Germany. > >> > >> There was only one reason to add counterweights to ailerons, and > >> that > >> was > > to > >> increase inertia of the system as to reduce Eigen-Frequency of the > >> whole system to a manageable frequency. Schleicher Aircraft used an > >> interesing method in the ASW-19, by putting lead into the top of > >> the control stick. > >> > >> You may forgive me if the self balancing of the ailerons is not > >> possible with the KR-2, as I am not yet fully familiar with the > >> control mechanics. > > I > >> got my plans only a few weeks ago and still in the study phase. > >> > >> Wolfgang > >> > >> > >> > >> _______________________________________ > >> 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 > > > > -- > Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ > > _______________________________________ > 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: 12 Date: Tue, 23 Mar 2004 12:29:16 -0500 From: "Joseph H. Horton" Subject: Re: KR> General Consensus-trim travel To: krnet@mylist.net Message-ID: <20040323.123725.1924.0.joe.kr2s.builder@juno.com> Content-Type: text/plain; charset=us-ascii Mark, I preferred to think of it as in the same travel as the control stick and similar to the control wheel in the cessna. The trim wheel turning up is nose down and turning down is nose up. In my mind that would be the same as having the rocker switch top as nose down and pressing the bottom as nose up. I have the trim lever set up in mine right now and is set like the control stick. Forward is nose down On Mon, 22 Mar 2004 19:25:24 -0600 "Mark Jones" writes: > I have just completed the wiring of my elevator trim tab to the > rocker switch and LED position indicator. Now I have to decide which > way to position the indicator and Led positioned. The mounting holes > are cut in the panel and all I have to de is screw them down. I have > tried the rocker both ways. Up is up and up is down. Down is up and > down is down. I am used to the trim wheel on Cessna where you turn > the wheel back to raise the elevator and the Piper where the trim > switch is on the yoke and you pull it back to raise the elevator. > Now, should I set the rocker switch where elevator up is achieved by > pressing the bottom which would be like pulling the yoke back and > pressing the top would be like pushing the yoke forward. Confusing? > That is why I would like a general consensus of how a panel mounted > elevator trim rocker switch should be activated. > > 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 > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > Joe Horton joe.kr2s.builder@juno.com ------------------------------ Message: 13 Date: Tue, 23 Mar 2004 13:51:45 -0500 (EST) From: paulwasp@webtv.net Subject: KR> Resubscribe To: krnet@mylist.net Message-ID: <19723-40608741-2827@storefull-3237.bay.webtv.net> Content-Type: Text/Plain; Charset=US-ASCII http://community.webtv.net/paulwasp/paulwaspspad ------------------------------ Message: 14 Date: Tue, 23 Mar 2004 12:13:55 -0800 From: "joe" Subject: Re: Re: KR> Balancing Ailerons To: "KRnet" Message-ID: <000c01c41113$5e6eff80$0a0110ac@o7p4e3> Content-Type: text/plain; charset="iso-8859-1" Hi, I'm assuming(?) that like all aircraft designers you performed your flutter testing on the ground thru the use of GVT ground vibration tests, and not by flying? ----- Original Message ----- From: To: "KRnet" Sent: Tuesday, March 23, 2004 8:54 AM Subject: Re: Re: KR> Balancing Ailerons > Exactly my point. Ailerons are part of the dynamic system on the wing > that can induce flutter, and it does so if the frequency at which the aileron flutters meets the frequence of the wing. Typically you try to make the wing as stiff as possible to increase the harmonic frequencies, and you try to decrease the harmonic frequencies of the ailerons to keep them below the harmonics of the wing. > > During my time at the Technical University Braunschweig I was involved building the SB-13 glider, which does not have a tail (I just tried to check out a link that would show a picture, but had to find out that something on the web page of the Academic Glidergroup does not work. I'll post it as soon as I find another one). During the development phase of this glider we built a 1:3 scale model, on which we experienced some extreme cases of fluttering. So we started doing calculations on this and found, that we had at least two different modes of flutter. The main reason for the occurance of flutter was the fact, that the tail was missing on this design, as the tail with it's long arm works as a great dampener, thus eliminating the oscillations created by a combination of warping and swinging of the main wing. The solution was to increase the stiffness of the wing so that the harmonic frequency of the wing (including the warp modes) was high enough that it flutter could not be induced within the speed enveloped we designed the aircraft for. > > Bottom line is, that you may still experience flutter, even if you perfectly balance your ailerons, if they are build light and if their harmonic frequencies coincide with the wings harmonic frequency. > > Just adding to the whole confusion about fluttering, but as it was > pointed out before, it is indeed an extremely complex area. "Oscillations" was a mandatory class in my studies, and almost everybody in my class hated it!! > > Wolfgang > > > > From: Ross Youngblood > > Date: 2004/03/23 Tue AM 04:16:25 EST > > To: KRnet > > Subject: Re: KR> Balancing Ailerons > > > > I think Wolfgang's description regarding Eigen Frequencies is saying > > the same thing. Flutter is mechanical oscillation with positive > > feedback. I recall learning about Eigenvalues in linear algebra... > > but did not study aerospace or mechanical engineering... I suspect > > that reducing the "Eigen Frequency" is another term for trying to > > keep any harmonic oscillation low enough so that it doesn't feeback > > onto itself and cause the plane to damage itself. (i.e. prevent > > flutter). > > > > > > On Mon, 22 Mar 2004 19:31:01 -0600, Mark Jones wrote: > > > > > Wolfgang, > > > The reason to balance the ailerons is not to achieve equal control > > > balance between the two ailerons yet to achieve balance on the > > > pivot point of the > > > aileron hinge to help eliminate flutter. Flutter is sudden and is seldom > > > recoverable before it destroys the control surface. Do a search in > > > the archives on flutter and you will have a nights worth of > > > reading. > > > > > > 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 > > > > > > > > >> Hi Netters, > > >> > > >> I followed the balancing discussion for some time now, and to > > >> through some more fuel into the fire (or to just post a dumb > > >> question): Shouldn't the > > >> Ailerons balance each other, since if the left one goes down the right > > >> one > > >> goes up? I personally do not recall that we used balancing > > >> weights on the gliders we build at the glider group in Germany. > > >> > > >> There was only one reason to add counterweights to ailerons, and > > >> that was > > > to > > >> increase inertia of the system as to reduce Eigen-Frequency of > > >> the whole > > >> system to a manageable frequency. Schleicher Aircraft used an interesing > > >> method in the ASW-19, by putting lead into the top of the control stick. > > >> > > >> You may forgive me if the self balancing of the ailerons is not possible > > >> with the KR-2, as I am not yet fully familiar with the control > > >> mechanics. > > > I > > >> got my plans only a few weeks ago and still in the study phase. > > >> > > >> Wolfgang > > >> > > >> > > >> > > >> _______________________________________ > > >> 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 > > > > > > > > -- > > Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ > > > > _______________________________________ > > 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 ------------------------------ Message: 15 Date: Tue, 23 Mar 2004 12:32:43 -0800 From: "joe" Subject: KR> aileron trim To: "KRnet" Message-ID: <001501c41115$fe8486a0$0a0110ac@o7p4e3> Content-Type: text/plain; charset="iso-8859-1" My aircraft ailerons had fixed trim tabs that could be manually bent(while on the ground), which I replaced with twin servos.(STC'd). The control was mounted on the pilot side wall and was an arched piece of plastic with a perpindicular control which moved forward and aft. It can be found in any old issue of The Commanche Flyer, the commanche society newsletter(magazine form). ------------------------------ Message: 16 Date: Tue, 23 Mar 2004 18:26:19 -0500 From: "Dean Cooper" Subject: Re: KR> cockpit size To: "KRnet" Message-ID: <061b01c4112e$3f1cb3f0$0502a8c0@office> Content-Type: text/plain; charset="iso-8859-1" Larry wrote: >As for the head room, build your seat first and have someone measure >the height you need while you set in the seat and built to that >dimension. Also, make sure you have your headset on when you measure... :-) Dean Cooper Jacksonville, FL Email me at dean_cooper@bellsouth.net See my KR project at www.geocities.com/djramccoop1/KR2_Home.html ------------------------------ Message: 17 Date: Tue, 23 Mar 2004 16:35:59 -0800 From: "Peter Johnson" Subject: Re: KR> Importing project to Canada To: "KRnet" Message-ID: <00ce01c41145$3d31b560$31421a45@peter> Content-Type: text/plain; charset="iso-8859-1" Hi Chris. I suggest you look at the 'MDRA Inspection Services' website. If the info you're looking for is not there then there will be a link to where you will find it. Peter Johnson KR-2Sexy with a Corvair Kenora, Ontario mailto:pjohnson@voyageur.ca ----- Original Message ----- From: "Chris Angela Barber" To: Sent: Tuesday, March 23, 2004 6:40 AM Subject: KR> Importing project to Canada > Does anyone know what's involved in buying a project from the U.S. and > importing it into Canada to complete? Or can anyone point me into the right > direction to look? > > Thanks, > > Chris Barber > > _________________________________________________________________ > Free yourself from those irritating pop-up ads with MSn Premium. Get 2months > FREE* > http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=htt p://hotmail.com/enca&HL=Market_MSNIS_Taglines > > > _______________________________________ > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 346, Issue 4 ************************************* ================================== ABC Amber Outlook Converter v4.20 Trial version ==================================