Or we have wing tips pre-fabbed available. Steve Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Mark Langford" <n5...@hiwaay.net> Sender: krnet-bounces+n925sg=cox....@mylist.net List-Post: krnet@list.krnet.org Date: Thu, 5 Aug 2010 22:21:36 To: KRnet<kr...@mylist.net> Reply-To: KRnet <kr...@mylist.net> Subject: Re: KR> Hoerner tips Mike Sylvester wrote: > Mark, I like sunsets as much as everybody else but I had really rather see > a picture of those longer wings. I'm interested in the tips. Are they > like Jones's or more like the Horner tips? Mine are pure Hoerner tips, best I can tell. Jones appears to have done a better job of reading the KR manual and done them from the get-go. That being said, when I did mine I was in too much of a hurry to spend a few hours and do the research to see exactly what that means. So I sortof kindof did a Hoerner tip, and then nicely rounded all the edges, which killed the effectiveness completely, I now know. To do a Hoerner tip, glue a chunk of foam on the end of the wing and contour the top and bottom to match the adjacent airfoil. Glass it or carbon fiber it, and with a square end on it (perpendicular to the ground). Then take a hacksaw or something similar and starting at either the front or the rear, and using the top edge of the airfoil cut about a 60 degree angle (measured from vertical) inward towards the fuselage using the upper "corner" as a guide. http://www.n56ml.com/wingtips/100629071m.jpg comes pretty close to telling the whole story. Note that the outer edge of the wing is parallel to the centerline of the fuselage. That's what eluded me 10 years ago. Viewed from the top you'd never know it was anything but squared off. The theory is that you can radius the bottom a little, but the top has to be a sharp corner so the air can't turn that sharp cornerand turn inward into a vortex, which would be a drag producer. I need to tuft that tip and show the results. Probably a lot better than previously. Good point though, regarding sunsets. I took several hundred pictures of the wingtip process, but flying and taking sunset pictures is a lot more fun and relaxing that creating web pages. That's something else I've learned in the last five years. Sorry about that.... Mark Langford N56ML "at" hiwaay.net website at http://www.N56ML.com -------------------------------------------------------- _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
