Shrink Wrap Wings !

Discussion in 'Tube and Fabric' started by Greg Mueller, May 22, 2008.

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  1. Sep 12, 2015 #61

    proppastie

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    Will you rib stitch, pop-rivet or glue to the structure? I believe it is important for "pillowing" although I am not a fabric expert.
     
  2. Sep 13, 2015 #62

    airplaneAddict

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    I taped each rib from the inside to the top shrink wrap in four spots.

    The tape's glue is very sticky, but if you wanted more, I would super glue the tape edges.

    I bought Tower hobbies brand thick and thin super glue.

    TowerHobbies.com | Search Results
     
  3. Sep 15, 2015 #63

    airplaneAddict

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    More pictures of covering the second wing half
     

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  4. Sep 23, 2015 #64

    airplaneAddict

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    Painted trim using Rustoleum spray cans from Walmart, it sticks to plastic.
     

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  5. Sep 24, 2015 #65

    proppastie

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    please continue to up-date us, I know I would be very interested in how this holds up. Will you keep it inside a hanger or storage unit?
     
  6. Sep 27, 2015 #66

    airplaneAddict

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    So far I keep it outside the shop to work on it.

    During winter it will be stored in my storage unit with it's wings folded back.

    I have a week of clean up items before trying to start the Rotax 503.

    Then I'll taxi and do a few hops to get the feel of it.

    After that I may have to takeoff, keeping a landing spot within eyesite and gliding distance.

    My wife want's me to wait until next spring to fly it, so she can increase my life insurance :-}
     
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  7. Sep 27, 2015 #67

    airplaneAddict

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    Here are the latest pix
     

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  8. Sep 27, 2015 #68

    airplaneAddict

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    Here is the link to my website wit all the pictures of covering and construction

    MATO
     
  9. Sep 27, 2015 #69

    airplaneAddict

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    One thing I could do is to add stretch tape over each rib and pull it tight around the wing.

    I may do this if I have any pillowing
     
  10. Sep 27, 2015 #70

    proppastie

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    Some of the technical specifications said 1 year UV protection or 3 year. I am not sure what that means as regards a steady loss of strength or not. Might want to keep it inside when not flying after you finish. Might be instructive to build a test frame with scraps, and get a fabric punch tester to test for any loss of strength if you do decide to keep it outside.
     
  11. Sep 27, 2015 #71

    airplaneAddict

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    I used a metal ruler to do a punch test...really strong stuff...it's 3 times as thick as the models I cover...I can't keep it inside, because I don't want to fold the wings back very often...not to worry, as a newbie pilot it won't last long most likely :-} UV is the least of my worries.
     
  12. Sep 27, 2015 #72

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  13. Sep 27, 2015 #73

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  14. Sep 28, 2015 #74

    proppastie

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    I guess the question I have is how will you know when it has deteriorated "too much" It is guaranteed to deteriorate from UV. Weather the wax, paint or whatever works is the same question, how will you test it/evaluate it. If the top of the wing, or control surface fails you could get hurt, and that is what will fail first because it is exposed to the sun the most. That it is a cheap easy covering is great, one answer could be recover every year if it is really cheap and easy,....However that might not be good enough even. Please think about some sort of method to know how your fabric is holding up. There are standards for sail cloth or fabric that was original for your aircraft. A call to the factory or compare to other similar craft could get minimum strength standards as a comparison.

    You also could make wing tail covers when not flying. Let us know how is coming.
     
    Last edited: Sep 28, 2015
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  15. Sep 28, 2015 #75

    airplaneAddict

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    Thanks for your concern.

    I can poke it with my finger and it goes through I won't fly.

    Honestly, the plane may not last that long, as I'm a new pilot.
     
  16. Sep 28, 2015 #76

    airplaneAddict

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    more pictures
     

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  17. Oct 1, 2015 #77

    proppastie

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    new pilot ....go slow,....fly safe
     
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  18. Oct 1, 2015 #78

    proppastie

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    I found this as to strength. see attachment

    Edit: I calculated the PSI of Oratex 600 (650 N/50mm) to come out to 15,745 PSI vs 3000 PSI for the shrink wrap.

    330 N/in. = 74 lb/in...... .0047 in thick = 15745 lb/sq in

    That is not to say the shrink wrap is not strong enough for UL aircraft, but it is a data point for consideration.
     

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    Last edited: Oct 1, 2015
  19. Oct 1, 2015 #79

    airplaneAddict

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    I can buy 12 mill shrink wrap vs the 6 mill I have now...thanks for the calculations that say it will be strong enough!
     
  20. Oct 1, 2015 #80

    airplaneAddict

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