My personal lesson from the contest was that I need to pay attention to stresses when I make a modifications.
My Hellcat, an old, die cut kit (15 lb wood) built 12 years ago was extensively lightened. I had run the parts sheets through a thickness sander and even with the old wood it came out at 28 grams with rubber. I have been building a torque box under the cowls of some Guillow's models with full plastic cowls to support a removable nose block. (The pictures are from a Rufe build, not the Hellcat.) The torque box was glued directly to the face of former F1. This, along with an agressive, but heavy, Ikara prop, actually provided enough weight in the nose to balance it with all the lightening. As it turned out I should have added some 1/16 square stock to provide more glue surface where the box was glued to the former because a mildly bad landing broke the torque box off the former and with the cowl glued to the fuselage there was no easy way to repair it at the field.
KF
3692.jpg
3693.jpg
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