lannes
First Officer
Flight distance : 4465 ft
Australia
Offline
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Could just be plastic fatigue in the arm near the motor from numerous flights, the mini doesn't seem strong in that area.
It is easy to twist the arm , if you grab the front leg it will twist on its own without force at where the motor joins the arm, the plastic is very soft
On power up and in sport mode this is also the area that experiences the most torque
Probably a design specification fault due to excessive weight saving, the arm at that point should be especially rigid torsionally since there is weight outboard
You'll also notice that the panel highlighted in yellow on the fornt arms is a type of foam rubber, while on the back arms it is rigid plastic.
Being pliable means that the arms twist easily without much structural strength to stop it.
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