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Walkera Dragonfly 4 - Flybar Binding Correction

Walkera Dragonfly 4
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If the flybar cannot seesaw, due to binding...then it cannot even be balanced.
Take the entire flybar off by removing a paddle and the locking collar with it. With both
setcrews loose in the center control frame, pull the rod completely out.
The flybar seesaw is binding on the inner walls of the hub and also the two brass
bushings. With the hexkey that came with it, push each bushing out through the hole
of the opposite one. Try not to butcher up the inner edges, work slowly as these are
tight. Now, slide out the flybar seesaw. Sand both sides of this seesaw by rubbing it in
circular motions on a flat piece of 400 to 600 sandpaper. With a small rat tail file, open
the hole from both sides that the brass bushings enter. When all is reassembled, the
ideal will be that it teeters freely and also your flybar with paddles will move freely.
Some sewing machine oil can be added here as well. Note that this must not bind when
you're finished. Work slowly.