The fin template on the left is 22"wide by 28" long, and has a root of 12". Three fins will be attached to a 98mm Blue Tube. I'll be using 1/4" Baltic birch plywood stock for the fins.
I'll have a 24" dia. "centering ring" made from the Baltic birch sitting on top of the fins as an added 10" horizontal attachment point. I have read the very informative Fiberglassing Techniques thread.
But I thought I should ask specific advice about the fin/body tube fiberglassing process for such large fins as these. I thought of possibly reinforcing the bottom "leg" portion of the fins with layers of fiberglass and/or 1/4" plywood on either side, but I wasn't planning to glass the entire fin.
I'd appreciate any thoughts/directions/techniques/critiques. The finished rocket will weigh about 45 pounds. The football-shaped body will also be glassed over the 1" insulating foam circular layers, but I have experience in glassing an oddly-shaped large body from a previous project (McDonnell Douglas "Delta Clipper").
Thanks!!!