I have always wanted to build a Chinook. With the latest ArduCopter code supporting tandem helicopters, I thought I would build a small test bed.
I have used two 250 class frames, standard flybar heads, a single motor and a gear drive between the two rotor assembles. I have used a PixFalcon as the controller running ArduCopter 3.5.3.
I am having an issue on setup with the aft rotor assembly. The two rotors counter-rotate, forward in the normal manner (clock-wise from above). Using the stock flybar heads, this means that the collective motion on the aft rotor needs to be reversed. I can modify the servo reverse setting to get correct collective motion but that then causes the roll and yaw to be incorrect.
Chinook 30 Sep 2017.param (13.6 KB)
Any guidance or suggestions would be appreciated.