in frame class tri copter frame type v tail is an option what does that mean a?
Tricopter does not have a vtail option. If you can set that up that setting is ignored.
Unless you are talking about a qplane, then the vtail option is probably for the plane frame and not the tri qframe.
If you are not talking about a qplane you should post in Copter and not Plane
thanks i am new here so i have V tail drone so setting up V tail is probably right option i guess !