After I showed a group of students a scratch-built r.c. aircraft made by Brooklyn Aerodrome, they were inspired to make and fly their own. They immediately ran into a couple of problems. First: They crashed — a lot. The airplanes were so light, that they were easily carried by the wind, and they weren’t robust enough to withstand much punishment. Second: There were a lot of interested students, but I was funding this out of pocket. I needed a way to get everyone to participate without breaking the bank.
We took a different approach. Doubling the thickness of the airframe made it easier to control, and more resistant to punishment. Also, instead of tying the electronics deck to the airframe, we made the electronics, propulsion, and control system interchangeable. This allowed every student to build and fly inexpensive custom airframes.