The problem I see is that you would get some bend back. You need to have the degree of dihedral rather presice. When you bend 1/4 inch strips, and glue them together, you get very little, if any, spring back. Check out how I built my spars on the link below. Darren Cromptom also did some great work in also encorporating an additional bend in the rear spar to create a linear trailing edge.
Ron Smith KR2SSXL Buckeye Arizona mercedesm...@yahoo.com http://ronsmith.myphotoalbum.com/albums.php --- On Thu, 4/2/09, Mark <markweg...@charter.net> wrote: From: Mark <markweg...@charter.net> Subject: KR> Bending main spars To: "'KRnet'" <kr...@mylist.net> List-Post: krnet@list.krnet.org Date: Thursday, April 2, 2009, 6:34 PM Hi netters; I purchased an older KR2 project last October that is in the boat stage with some completed spars. I recently unwrapped the spars and found that the front center spar wood is there, but they were never assembled/built. Back when I started investigating and learning about KR's (about 2 years ago), and after reading Raymer on design I thought that putting the dihedral in the main (center) spars would be best. I thought about 3 - 3 1/2 degrees would be a good number to shoot for. My plan for accomplishing this is to take a piece of 3/4" plywood and set some pins (3/4 bolts) in the appropriate locations on the plywood to "fixture" the main spars top and bottom spruce in the proper configuration and then put the spars top and bottom components in a really hot shower and let them "steam" until the hot water ran out and then clamp them to the fixture (using the same bolts for both top and bottom so they would match). I will be configuring the wings to meet the AS504x configuration by laminating the already built spars with thin strips of spruce top and bottom to the proper depth. Do you guys think this would work? Remember, I am building "Pretty Girl" in my living room. Thanks for your input. Regards, Mark W N952MW _______________________________________ 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
