From: krnet-bounces@mylist.net To: John Bouyea Subject: KRnet Digest, Vol 347, Issue 500 Date: 12/5/2005 9:00:22 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. RE: aileron hinges (Brian Kraut) 2. RE: aileron hinges. (David Kopanski) 3. RE: KR-2S / Corvair forsale (David Kopanski) ---------------------------------------------------------------------- Message: 1 Date: Mon, 5 Dec 2005 22:25:14 -0500 From: "Brian Kraut" Subject: RE: KR> aileron hinges To: "KRnet" Message-ID: Content-Type: text/plain; charset="us-ascii" He, he, he. Remember me telling you that I was going to have mine down for three months and it took a year and three months? Chris Heintz is no doubt an expert and I have a lot of confidence in his work. I have read a lot of his articles and would just love to have the opportunity to sit down with him and pick his brain for a few hours. I appreciate the link and it is certainly an idea worth pondering and it seems great for an aluminum plane. I think that there are some considerations that make it a lot less practical on the KR though. For one, you need the flexing area to be fairly wide so it will bend with a larger radius. To keep the gap on the bottom of the aileron a manageable distance will require a little rework of the shape. It will be very hard to get the aileron spars in and make that shape with a continuous glass top skin. You also might have a tendency for the top skin to start to peel off of the top of the spar. You could build the aileron separate and use a glass or kevlar hinge on top, but by the time you are done you are probably just as well off to use the piano hinge. Just my opinion, but I see no reason why it could not be feasible as long as you had a way to figure out if the fatigue strength and force to bend the hinge work out O.K. Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-bounces@mylist.net [mailto:krnet-bounces@mylist.net]On Behalf Of Colin Rainey Sent: Monday, December 05, 2005 9:38 PM To: krnet@mylist.net Subject: KR> aileron hinges Now you are asking to mix two different materials in a structural location. >From what I have heard, that is a bad idea. Why not just use the Dr. >Dean hinge method, detailed on Mark Langford's site, and make life easy and safe. This is one area that has been explored a great deal, and I believe that way too much time is wasted thinking of any new ideas. Incorporating these new ideas, while having merit, and making the builder look smart, will ultimately take a great deal of extra time, because now "Captain Kirk" you are going where no man has gone before! I have a flying KR2 that has been taken down for an engine change that was supposed to take 3 months. This April will be one year. All changes take extra time. Weigh the advantages: you still only get 20 degrees up and 10 degrees down deflection; It will be with more resistance, as I have spoken to builders who have had a 601 with the aileron skin, and converted to hinge for better control harmony; and it will take longer because you will be making the blue print. My humble opinion is to find something else on the plane to express your individuality... Colin Rainey brokerpilot96ta@earthlink.net EarthLink Revolves Around You. _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp 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: 2 Date: Tue, 6 Dec 2005 03:37:13 -0000 From: "David Kopanski" Subject: RE: KR> aileron hinges. To: "KRnet" Message-ID: <1385CC28637F584DA11E5B3F824EF18803D2302D@lonexch400.kbrsat.kbr.com> Content-Type: text/plain; charset="us-ascii" I just want to say that I've been following the comments that have been made on this site for only a couple of weeks. This site reminds me so much of a government think-tank. You good folks come up with some VERY, VERY interesting questions and comments, like the one below made by Ameet. If you think about it, this is where "cutting-edge technology" starts - by interested, dedicated people, like yourselves asking questions, making comments, trying new things, and coming up with new solutions. I belong to quite a few aviation discussion groups, but this one runs circles around the rest. I'm hyped! Keep up the fantastic work! David Kopanski Kirkuk, Iraq -----Original Message----- From: krnet-bounces@mylist.net [mailto:krnet-bounces@mylist.net] On Behalf Of Ameet Savant Sent: Monday, December 05, 2005 8:11 PM To: KRnet Subject: RE: KR> aileron hinges. Load is not just a function of airspeed it also depends on size of the control surface (among other things) 200 mph of an small R/C plane is not the same load on the control surface as 200mph for a full scale airplane. As I mentioned earlier, R/C gliders use "KEVLAR" for this purpose. I don't know the theory behind it nor the numbers to justify the fatigue life. But there must be some logic to it and might be a good start for someone to investigate such a hinge method. Regards, Ameet Savant --- Doug Rupert wrote: > Now the only question remaining is what composite > will take that kind of > repetitive flexing without degradation. > > Doug Rupert > > > > . As was mentioned previously, this is also common > practice on RC planes, > including some that have speeds up to 200 mph. > > > > Jeff Scott > > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.362 / Virus Database: 267.13.11/191 - > Release Date: 12/2/2005 > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to > KRnet-leave@mylist.net > please see other KRnet info at http://www.krnet.org/info.html __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html ---------------------------------------------------------------------- This e-mail, including any attached files, may contain confidential and privileged information for the sole use of the intended recipient. Any review, use, distribution, or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive information for the intended recipient), please contact the sender by reply e-mail and delete all copies of this message. ------------------------------ Message: 3 Date: Tue, 6 Dec 2005 04:13:23 -0000 From: "David Kopanski" Subject: RE: KR> KR-2S / Corvair forsale To: "KRnet" Message-ID: <1385CC28637F584DA11E5B3F824EF18803D230A0@lonexch400.kbrsat.kbr.com> Content-Type: text/plain; charset="us-ascii" Wow John, Very nice. 'Wish I had the time and money. My day will come. David Kopanski Kirkuk, Iraq -----Original Message----- From: krnet-bounces@mylist.net [mailto:krnet-bounces@mylist.net] On Behalf Of John Esch Sent: Tuesday, December 06, 2005 5:51 AM To: corvaircraft@mylist.net; krnet@mylist.net Subject: KR> KR-2S / Corvair forsale All Once again I am lowering the price of my KR-2S and Corvair project. Information can be found at http://www.home.earthlink.net/~jfesch/ The project is located at the Independence Airpark (7S5), Oregon. John Esch _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html ---------------------------------------------------------------------- This e-mail, including any attached files, may contain confidential and privileged information for the sole use of the intended recipient. Any review, use, distribution, or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive information for the intended recipient), please contact the sender by reply e-mail and delete all copies of this message. ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 347, Issue 500 *************************************** ================================== ABC Amber Outlook Converter v4.20 Trial version ==================================