Hello Wahid

There are so many stupid little reasons why a gyro will fly or not that its hard to know where to start.

I will give you some basic setup angles that tend to be similar on most of my DC control gyros.

Hang angle ( this is the amount the model hangs nose low when held by the mast) should be around 8 degrees as a good starting point.

Down thrust of the engine on that image you posted should be around 6 degrees . Gyros need a lot more down thrust than fixed wing due to the higher centre of gravity and the drag of the rotors.

Neutral aft tilt should also be around 8 degrees with the tranny stick centred. Lateral movement should be something like 7 or 8 degrees each way. If aft rake is fixed then I tend to use 8 degrees as the angle.

Are you rotors definitely reaching full autorotation before launch ? You should notice a rapid acceleration in to autorotation with a noticeable 'thrumming sound' and the model should certainly go light in your hands before launch. This sound is more noticeable on the smaller models like the .15 sized model.

Finally, your rotor mast should be mounted aft of the for&aft pivot point. This is to balance out lift and drag so as not to overstress your servos. This might explain why you are stripping a few or even losing control due to too much force preventing the servo from operating correctly.

Even though gyros are fun to fly really slowly, I recomend flying reasonably quickly with gentle turns at first, airspeed will allow your tail surfaces to give you this extra stability.

I hope this helps

Sean

P.S Stay with the hand launching, with smaller models its definitely easier until you gain confidence.