RE: phoenix decathlon
I have also tested the use of a gyro, and I am very pleased with the results. I am using the Futaba 401 on the ruder. I connected the gain to channel 5, lower the ATV to zero for the AVCS and up to 90 for the standard. I now get almost perfect take offs. I can switch the gyro off and have normal gyro free flight. I still need to tweak it some I may up the ATV to 110 or even 125 to see what happens.
I am also going to program some differentials as IronCross suggested. I think it could help in low speed stalls which I have some problems recovering from.