Hi
I am builder from Slovakia, so I do not have a DTFB I use another kind of foam so I have some times problems for example with CG, or I have to use bigger motors.
Recently I build an FT Sparrow, but I had to make its nose a bit longer because of CG. It flew only straight and when I tried to turn it always fall straight to ground. So I decided to add ailerons to the wing and it helped. The Sparrow flew nicely. I like this concept a lot, but after 3 flights it never flew again. It again started to fall at turns. I thought the problem was in the V-tail, because it took some beating. Since the V-tail and also whole frame was quiet beat up after crashes I decided to make a new frame with a conventional tail. So my Sparrow now is 3 channel ailerons and elevator.
But for my surprise it also flies only straight and when turning it falls. Here is the video from maiden.
Any sugestions how to fix it?