The reason for programming in a small amount of elevator is that this is what it says in the instructions, mix in approx 15% of up elevator when airbrake is deployed. Also when the model was test flown by Mark Leavesley he agreed that a small amount would be needed to maintain level flight, as the model dropped the nose slightly when the airbrake was deployed.

I flew it on friday, without the airbrake (couldn't get the mix with the elevator working) and it landed ok, she came in fast so a little walk was needed. Friday was the first time I have flown turbines so it was my first experience of residual thrust and the amount of slowing down required.


Anyway I have sorted out my problem with the mixing, I had an elevator to flap mix active which was affecting the other mix, once inhibited the mixes worked ok.