Dan >From what I have read that others have posted, if a structure only requires >fiberglass lay ups on one side, then the foam is merely the shape and the >glass is taking all of the load. If a true composite structure is required, >lay ups on both sides are called for, then the foam does matter alittle, both >in thickness and in composition, because it is part of the total structure and >contribute to its strength. The most common I have seen it the pink foam Mark >L used, the blue foam I have seen Scott Swing use on the Velocity at his >Sebastian FL plant, and the Last O Foam that I ahve personnally used and also >seen the Vision builders use for their entire fuselage. They use 2 types I >thought would be of interest to KR builders including me when I build a new >cowling. They use regular Last O Foam, and then they also use a heatable Last >O Foam that can be shaped over a jig easily. Careful use of a heat gun, bend >to shape, let cool, glass the outside, allow to cure, then remove from jig, >place in reverse mold, as illustrated on Mark L's site, and glass the inside. >1/2 inch and 1/4 inch thicknesses are used throughout with glass applied the >same way as on the KR. I used Last o Foam on my seat, canopy handle, and >several other places and found it very easy to work with.
Now if I can just get that Inspector to come back..... Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com http://kr-builder.org/Colin/index.html
