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: [email protected] [mailto:[email protected]]On Behalf Of Colin Rainey Sent: Monday, December 05, 2005 9:38 PM To: [email protected] 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 [email protected] EarthLink Revolves Around You. _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to [email protected] please see other KRnet info at http://www.krnet.org/info.html
