Simon Hitchen
Well Known Member
Hi guys, I've searched and searched but can't quite find what I'm looking for.
My 7 does has an aileron issue. On the ground everything, all wing trailing edges, line up beautifully. The angle of incidence is equal from tip to tip. Aileron alignment tool is bang on. I've measured the pivot point to aileron centre line on both ailerons inboard and out, exactly the same. The aircraft flies with the ball in the middle at cruise. All fairings measured straight with a laser.
In flight if I hold the ailerons in trail to match the wing tips and inboard flap position there is no rolling moment, it flies beautifully straight. If I let go of the ailerons with trim centre, the left aileron raises slightly (about 1/8th of an inch) with corresponding downward deflection of the right aileron and I roll left. It's trimable with about 3/4 trim at cruise speed.
Something to do with the airflow is causing the ailerons to deflect. It's certainly an airspeed dynamic pressure issue as the effect increases with airspeed. I know it can't be a flap position error because if I hold it all in trail it flies straight. I'm leaning towards adjusting the vertical position of the aileron (not sure which one yet). Any thoughts please?
Thanks
My 7 does has an aileron issue. On the ground everything, all wing trailing edges, line up beautifully. The angle of incidence is equal from tip to tip. Aileron alignment tool is bang on. I've measured the pivot point to aileron centre line on both ailerons inboard and out, exactly the same. The aircraft flies with the ball in the middle at cruise. All fairings measured straight with a laser.
In flight if I hold the ailerons in trail to match the wing tips and inboard flap position there is no rolling moment, it flies beautifully straight. If I let go of the ailerons with trim centre, the left aileron raises slightly (about 1/8th of an inch) with corresponding downward deflection of the right aileron and I roll left. It's trimable with about 3/4 trim at cruise speed.
Something to do with the airflow is causing the ailerons to deflect. It's certainly an airspeed dynamic pressure issue as the effect increases with airspeed. I know it can't be a flap position error because if I hold it all in trail it flies straight. I'm leaning towards adjusting the vertical position of the aileron (not sure which one yet). Any thoughts please?
Thanks
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