KenKelso

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About KenKelso

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KenKelso's Activity

  1. KenKelso added a post in a topic Avid STOL airfoil -some calculations   

    Hey Turbo, I 3d printed a flap handle detent setup, details in this post
    http://avidfoxflyers.com/index.php?/topic/6873-3d-printed-flap-detent/#comment-62183
    Ken
    • 0
  2. KenKelso added a post in a topic Vortex Generators   

    I have emailed you with my phone number. Skiing this week, when I get home I’ll see if I have the tail plane mod. details. Is yours a Speedwing Aerobat? Needs to be for the mod. to get you 1020lbs max weight.
    Ken
    • 1
  3. KenKelso added a post in a topic Vortex Generators   

    There is an interesting series of videos on 3D printed VG's on YouTube, shows their effect nicely. I can make these for you if you go ahead. Ken
    • 1
  4. KenKelso added a post in a topic Vortex Generators   

    It would be interesting to experiment Alan but getting them past the LAA modification system may be the biggest problem. One advantage of VG's is improved controls but as the flaperons fly below the wing I suspect this would not be the case on our Avids. We need someone with a wind tunnel!
    I know that you would also like to go a bit faster to keep up with Troy and I am looking at drag reduction on my bird. I have so far designed some fuel filler fairings for 3D printing and am now working on lift strut wing and fuselage fairings.
    BTW my strip is holding up well this winter so if you fancy a bimble up Cambridge way give me a shout.
    Ken
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  5. KenKelso added a post in a topic Flaperon attachment repair   

    In the UK changes like that have to be put through the Light Aircraft Association (LAA) modification procedure. The repair I carried out was already an approved repair scheme.
    Ken
    • 2
  6. KenKelso added a post in a topic Flaperon attachment repair   

    Here you go Leni, AutoCAD 2004 format. 
    BTW Paypal'ed you a small contribution yesterday, keep up the good work.
    Ken
    Speedwing Flaperon Repair.dwg
    SW171.dwg
    • 1
  7. KenKelso added a post in a topic Flaperon attachment repair   

    Been there done that akflyer, unfortunately I think they changed the speedwing profile slightly after mine and this drawing is for a 1998 model. These drawings are in AutoCAD 2020 format say if you would like me to export in another format.
    Ken
    Speedwing Flaperon Repair.dwg
    SW171.dwg
    • 1
  8. KenKelso added a topic in Technical tasks   

    Flaperon attachment repair
    In case others have to do it here are photos of my repair to all the flaperon hangers on my Speedwing. The process was:
    1/ Strip all the fabric
    2/ Using a hot air gun soften the glue between capstrips and ribs, prise the capstrips off.
    3/ Soften glue on rib to spar joint.
    4/ Remove rear rib section
    5/ make new rear rib sections using one of the broken ones glued together as a router pattern.
    6/ Glue rib replacement part to spar using structural adhesive.
    7/ Glue capstrips to ribs
    8/ Re-Cover and paint wing!!!!
     








    • 6 replies
    • 257 views
  9. KenKelso added a post in a topic Avid for sale in France   

    There are a couple of posts about slats here:


    Ken
    • 0
  10. KenKelso added a post in a topic what is a bush pilot?   

    In the UK ‘cowboy’ is used as a derogatory term usually applied to a tradesman who does a poor job or rips you off!
    I enjoy some of the videos but Cory Robin preaching about his amazing life style gets my goat. 
    Ken
    • 2
  11. KenKelso added a post in a topic Done getting bit in the ASS by toe brakes   

    Hello Fred,
    could you let me know more about the valve that you used to select left/right braking please, is it a solenoid valve or just manual. 
    Ken
    • 0
  12. KenKelso added a post in a topic Done getting bit in the ASS by toe brakes   

    The brakes caught me out the other day on my Avid.
    A thermal caught me as I touched down and kinked the plane a little to the left, full right rudder applied but I kept going left!! Unfortunately I went off my airstrip onto some rough ground so a wingtip went down and the flaperon touched the ground. The wing is now stripped of covering and I'm doing the repairs.
    Not a ground loop as I basically went straight but at 20 degrees to the strip.
    I don't have much time on the Avid but have about 700 tailwheel hours and am in current practice with a Chipmunk so my feet are not dead.
    My analysis is that full right rudder brings the left brake forward and unless one has the presence of mind to lift the left foot then the brake is applied. As the aircraft slows the rudder becomes less effective but the brake doesn't!!
    Basically the brake pedal geometry sucks.
    I am thinking that valves on the pedals and a lever on the stick would give good differential braking and be similar to the setup on the Chipmunk.
    Ken

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  13. KenKelso added a post in a topic Flap Lever   

    If you don’t trust plastic (polymers) then the files could be used to CNC machine the parts from aluminium. 
    Ken
    • 0
  14. KenKelso added a post in a topic Flap Lever   

    OK NorthIdahoAvidFlyer it's raining here so I can't go flying so I've added a version with 5 positions which should result in 3 degree of flap per.
    Ken
    • 4
  15. KenKelso added a post in a topic 3D Printed Flap Detent   

    Version with 5 positions as requested by NorthIdahoAvidFlyer.
    Avid Flap Detent 5 Position.stl
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