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Old 01-13-2016, 07:53 PM
  #13  
chistech
 
Join Date: Sep 2007
Location: south dartmouth, MA
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Set up the right flap servo linkage. I used a small CG control horn cut down some on the inside of the flap and put the control rod through the rear trailing edge. Using the small horn I needed less throw and a small servo arm. Because of the need for the flaps to close with some tension I set the control rod to allow the servo arm to be almost 180d (in the closed position) from the flap, lowering the tension on the servo drive gears and putting the tension more on the servo body. Setting it up this way allows the extra tension (tension is needed to fully close the ply flaps because of the slight warp they have and no hum from the servo).

Made up the support framework for the servo access door and sheeted the bottom of the wing. Sheeted the wing bottom and cutout the servo access opening. Because of the way the two flap servos are mounted in the wing, (because of the opposite rotation) one control rod needs towards the top of the rib, the other towards the bottom. Using the small servo arm allows all this to stay inside the wing with no issue.

When using the torque rods for the dive brakes, there is some movement of the brake end of the torque rod as the dive brake opens because of the dihedral. I made a small box to capture the end while still allowing the movement. Now the dive brake and the right side flap connections are all finished. I still need to make the connections on each side of the center flap to the respective outside flaps. I believe I will need the same sort of small box to allow for the control rod movement at these connections also.

Set up some values in my trans for mixing Aux 2 to flaps. Now when Aux 2 (dive brakes) is actuated, both the dive brakes and flaps open/close. Attached a couple pictures of half dive brake and full brake positions all with connections made to servos. Seems to be working well.
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