Peter, Isn't the 3300 a better fit for the KR as the weight is much closer to the VW 2180 which was the engine most used in that plane???? I am thinking you are going to have much more W&B issues with the 2200.
Just use a good epoxy and definitely rough it up very rough. Nothing will stick really well, but as long as you glass over the edge, it won't come off. I used AeroPoxy for everything on my plane except where I had to use Vinyl Ester. See N64KR at http://KRBuilder.org - Then click on the pics See you at the 2012 - KR Gathering in Mt. Vernon, Il MVN 40th Anniversary There is a time for building and it is over. Daniel R. Heath - Lexington, SC -----Original Message----- I noticed he attached the frame to the plexiglass with epoxy. What type is best and should I rough the plexiglass up to get it to stick? Because of all the problems we have encountered with using a Jabiru 3300 engine