You are correct that it is usually not a big problem if the glass separates from the foam in some places. Most KRs I have seen have seperation in some places. My only concern was cosmetic. My last KR had a big bubble near the trailing edge. It looked O.K. on cold days, but the glass expanded when it was hot and bubbled.
Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of larry flesner Sent: Tuesday, April 27, 2004 9:07 AM To: KRnet Subject: RE: KR> delaminations! >I have thought of taking something like a thin steel ruler and putting 1/4" >deep grooves in the foam in a 6" X 6" grid pattern before putting on the >micro. That would prevent the glass from separating from the foam and also >give it a little more stiffness while adding very little weight. Has anyone >ever tried this? Maybe I will do some test pieces. >Brian Kraut +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The foam will just fail with a "grid" pattern attached. I really don't see the need for anything more than sealing the foam with whatever method you chose and glassing it. How many KRs have flown before us using that method and how many have fallen from the sky because of the epoxy/fiber delaminating from the foam? It's a beautiful morning out and I need to run by the hangar. I think I'll take my ol' "hard-shelled" bird up for a quick flight! :-) Larry Flesner _______________________________________ to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
