Kitfox Aircraft Stick and Rudder Stein Air Grove Aircraft TCW Technologies Dynon Avionics AeroLED MGL Avionics Leading Edge Airfoils Desser EarthX Batteries Garmin G3X Touch
Results 1 to 4 of 4

Thread: Flapperon adjustment and angle differences

  1. #1
    Senior Member
    Join Date
    Dec 2017
    Location
    Canada
    Posts
    308

    Default Flapperon adjustment and angle differences

    I'm just going over everything as I prepare for my first test flight. One thing that I've noticed are the angles of each flapperon differ sometime by up to 4.75 degrees. This seems to be a bit much. Below is the table of angles I've measured. What's considered acceptable? And is there an easy way to figure out what to adjust to improve it. I feel like it's just a guessing game from the last/first time I did this months ago.

    Flap Position L0 R0 Diff L 1/2 R 1/2 Diff L Full R Full Diff
    Left Stick 23.55 23.50 0.05 14.15 12.40 1.75 4.60 1.30 3.3
    Right Stick 13.85 10.75 2.15 23.85 20.00 2.85 34.15 20.60 4.75
    Center Stick 0 0 0 8.7 11.00 2.3 19.00 20.70 1.7


    So some of these really stand out, especially full flaps.
    912 IS
    Airmaster Prop
    Garmin Stack
    C-FKLO

  2. #2
    Senior Member jmodguy's Avatar
    Join Date
    Jul 2014
    Location
    Carmel, IN
    Posts
    744

    Default Re: Flapperon adjustment and angle differences

    I had the same issues and concerns. I called the factory and talked with John McBean and he told me to make sure they are rigged per the manual at neutral and the rest will fall out where it will. The deflection at full throw is not that critical because you will likely not see those deflections in normal flight. He told me not to overthink it...
    Jeff
    KF 5
    340KF

  3. #3
    Senior Member
    Join Date
    Feb 2020
    Location
    Steilacoom, WA
    Posts
    730

    Default Re: Flapperon adjustment and angle differences

    That 34.15 sure jumps off the page. Is that a typo?
    Kitfox 5 (under construction)
    Commercial SE/ME, CFII

  4. #4
    Senior Member
    Join Date
    Dec 2017
    Location
    Canada
    Posts
    308

    Default Re: Flapperon adjustment and angle differences

    Quote Originally Posted by alexM View Post
    That 34.15 sure jumps off the page. Is that a typo?
    Nope it is not. But now that I look, the matching should be 29.60 making the 4.75 degree difference

    I'm planning to go over everything again on monday - from double checking the control horn attachment angles onwards.
    912 IS
    Airmaster Prop
    Garmin Stack
    C-FKLO

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •