Gyro Roll tendency
Posted: Sun Jul 24, 2016 7:47 pm
Hi all.
I am flying an Magni M18 gyro, and it is such a nice little gyro, very stable and it flies great also! The only issue I have is the roll tendency to the left, which requires constant pressure on the stick to keep it from rolling. This is not an issue while flying around the patch but could be tiresome on longer flights.
Now, as a basic principle of flight, with a anti-clockwise rotor spinning and asymmetric lift during forward flight, the gyro will naturally have the tendency to roll left. This has been compensated for by the manufacturer by either offsetting the rotor to the right a small amount, offsetting the trim attachment to the right or a combination of both.
The M18 does not have an offset rotor assembly and the trim cable is already attached to the far right of the holes provided. I think what adds to the issue is that the Rotax 582 engine turns clockwise, when viewed from the rear, so the torque will add to the roll tendency to the left.
This is only noticeable at high throttle settings and the gyro completely neutralizes when the rpm gets below 4000rpm (too low for sustained flight)
What is your experience with similar issues and what is the solution?
Jacques
I am flying an Magni M18 gyro, and it is such a nice little gyro, very stable and it flies great also! The only issue I have is the roll tendency to the left, which requires constant pressure on the stick to keep it from rolling. This is not an issue while flying around the patch but could be tiresome on longer flights.
Now, as a basic principle of flight, with a anti-clockwise rotor spinning and asymmetric lift during forward flight, the gyro will naturally have the tendency to roll left. This has been compensated for by the manufacturer by either offsetting the rotor to the right a small amount, offsetting the trim attachment to the right or a combination of both.
The M18 does not have an offset rotor assembly and the trim cable is already attached to the far right of the holes provided. I think what adds to the issue is that the Rotax 582 engine turns clockwise, when viewed from the rear, so the torque will add to the roll tendency to the left.
This is only noticeable at high throttle settings and the gyro completely neutralizes when the rpm gets below 4000rpm (too low for sustained flight)
What is your experience with similar issues and what is the solution?
Jacques