Action cams are pretty popular, and I picked up a small HD one (a favorite of RC helicopter groups) for some flight videos. I fabricated several mounts for my RV-4 that should work for a variety of aircraft. They are made from 3/4-inch wide x 1/8-inch thick strap aluminum and 1-3/4-inch suction cups that I found online. Besides the suction cups, the straps have a slight clamping action to help keep the mount tightly attached to the plane. A couple of rivets hold the straps together, and foam and felt strips were added to prevent scratching. The mounts work great, and you can’t beat the price—about $7 each.
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Prop Momentum Theory
Proper selection and design of the propeller is one of the keys to airplane performance.
Build Your Skills: Composites (Part 6)
In this series installment, author Bob Fritz takes you through the basics of a three-day project you can really use: lightweight fiberglass wheel chocks. The article covers materials, cutting, patterns, foam cutting, eliminating bubbles, and pitfalls to look out for during the build; by Bob Fritz.