Looking at the HK SuperG autogyro manual I found "critical note" that says that rotor head must be tilted 7 deg to the left.
Also I found in the manual trouble shooting section that if the model rolls to the right is due to the rotor head not pre angled to the left…
I have flown few times my HK 2 Auto G2 gyrocopter.
At take-off phase the model rolls sharply to the left
The rotor angular bias was zero deg. (Please see attached photos and video clip)
According to my aerodynamic understanding the SuperG gyrocopter should roll to the left after take-off.
Both models have CCW rotor angular movement.
The advancing blade on the right side "sees" both airspeed
And linear speed while the retreating blade on the left side "sees" the difference of airspeed and linear speed.
This difference between the blades "produces" roll moment to the left.
May one of you please explain me why the SuperG manual requires that rotor head must be tilted 7 deg to the left