Wing rock, dutch roll?
I am trying to get a plane of mine in the air for more that 10 seconds at a time. The small version is a 4 ounce 18 inch wingspan pusher canard. Its stable in pitch with good atourity, and stable in yaw. but just after takeoff before its up to speed it rocks or wobbles back in forth(roll). Right now it has two verticals angled out at the top. Im wondering if it has something to do with the shape of the main wing and the placement of the verts. Any ideas? thanks
Nick