I too have been working on a SPAD (SPAG DC) Gyro for a while now. I've been trying to collect ideas and specifications that will help me build. What I have so far is a Gyro with a three bladed rotor (10 degrees on the blade holders...though I've since read 20 degrees is preferred...ideas?) The finished weight should be 4 pounds if I add it all up without fuel. I'm for sure going to have questions such as servo direction for roll (rotor tilts right looking from behind to make a right turn?) and such. I've hopefully included a picture so you can see my progress. With a little more time I'll get to the radio install and make some blades (balsa and maple covered with Monokote to start....no Coro for the time being).

Splinter Wood.