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Old 07-03-2017 | 05:08 AM
  #18  
AA5BY
 
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From: White Oak, TX
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Originally Posted by speedracerntrixie
Actually moving the CG forward is counterproductiv. You want the airplane to be more neutrally balanced. Start out with moderate elevator throw and CG back around 35%. The object is to have the elevator trim stay constant from just above stall to full speed. That is a product of CG and elevator trim. For a 3D type airplane the wing and stab should both be set at zero. If the CG is too far forward you will need to carry up trim. The result is much like a car that always pulls to one side. Hard to drive smoothly that way.
Yep... testing a more forward position was indeed counterproductive and it was reset back to where it was. Where it is now provides proper power on/off trim .
I've come to believe that the very thick foil perhaps in combination with the short moment is something I've just not gotten used to. Thick foils continue to produce a lot of lift at slower speeds and my normal pitch control habits when landing likely produce over controlling. It might be that more than 60% expo would help. Or... maybe a land setup is needed. Or maybe.... elevator servo slow down... I'm going to try it and maybe do so on a land switch as I like kicking the bird around other than when landing.