What a great flying Yak 
Setup with the DA 50, hitec HV servo's and Futaba HV FASST system.
After some trim flights adjusting expo and balance, and finally a slight shim to the motors thrust, it began tracking like a pattern plane! No weird tendencies, on and off throttle held perfect lines in all attitudes, the works!
And then... after some basic loops with a roll over the top, four points, knife edge's, slow rolls and stall turns with a snap on up line being about the hardest maneuver.. coming out of the last stall turn, the wings began to flutter..... extremely bad... got her slowed at idle to a near stand still in the air and still severe wing fluttering.. she tip stalled over, I caught it for a split second on the down elevator..... and she tip stalled one final time, pile driving near nose first from about 15 feet.
I dont fly hard.. and have never even tried 3D, being an older pattern guy.. all I can think is one of the vertical snap rolls broke the wing cradle free in the fuselage, and the wings shook the thing to pieces.
Setup with the DA 50, hitec HV servo's and Futaba HV FASST system.
After some trim flights adjusting expo and balance, and finally a slight shim to the motors thrust, it began tracking like a pattern plane! No weird tendencies, on and off throttle held perfect lines in all attitudes, the works!
And then... after some basic loops with a roll over the top, four points, knife edge's, slow rolls and stall turns with a snap on up line being about the hardest maneuver.. coming out of the last stall turn, the wings began to flutter..... extremely bad... got her slowed at idle to a near stand still in the air and still severe wing fluttering.. she tip stalled over, I caught it for a split second on the down elevator..... and she tip stalled one final time, pile driving near nose first from about 15 feet.
I dont fly hard.. and have never even tried 3D, being an older pattern guy.. all I can think is one of the vertical snap rolls broke the wing cradle free in the fuselage, and the wings shook the thing to pieces.
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