pulsing and bridle/frame adjustments

Another cause of this low frequency vibration can be due to
the distance between the top and bottom bridle connection points 
on the leading edge spar. If the distance is small then smal changes
in legnth of bridle, or small amounts of flex in the fram, result in large
changes in pitch. Consequently increase distance between the two
and/or reduce the length of the bridle (reduces degree of stretch in 


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