DutchRoll
Well-known member
With the advent of the new FAA rules requiring transponders for all drones/rc airplanes over 250g/0.55lbs, I have seen a significant amount of interest on this forum on foam board choices and how to shave off grams off the foam board to get a design under the legal limit, while still having the resulting structure be strong enough to take the static and dynamic loads of flight.
I'm endeavoring to approach this problem scientifically, creating a testing program that will build a 1.5" x 20" straight box spar from each type of foam board I can get my hands on, and test the box spar to destruction.
I'm endeavoring to approach this problem scientifically, creating a testing program that will build a 1.5" x 20" straight box spar from each type of foam board I can get my hands on, and test the box spar to destruction.
Last edited: