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  1. Norm Langlois

    P-51C at ~70% scale as ultralight?

    I have said very little here . Its nice to dream. How can you accept the fact that in order to be a 103 you need approximately 120 sq ft of wing area ether by wing alone or by flaps or flaperon. to be in compliance with the 103 air speeds . You cant have it any other way just because you want...
  2. Norm Langlois

    Seamax beats ICON ?

    The two planes are the first in the list order of my friend Amos . He declares he is going to by one or the other. The word from 2 people I know that have flown the Seamax and the Icon. one downside for Amos and the Seamax is dock side, the strut interference. And The other is a flight...
  3. Norm Langlois

    Tell us what you are building!

    I encourage you to weigh up your calculations . A 103 compliant UL is a hard mark to hit. There are a very few cantilevered wings to fit your goals and they are not wood. The weight for 103 is just to low for any of us dreamers. The available engine weights are still to high for a 4 stroke 90...
  4. Norm Langlois

    thinning down from 6061 to 2024

    Macrae's post is good . It would need to be applied internal and integrated, with the bulkheads. But 3 sided forming is not going to happen. I can do 2 plus 1, or 3 independent sides. Riveting 3 sides together is not that big a deal. provides paired flanges doubling thickness. It also gives...
  5. Norm Langlois

    thinning down from 6061 to 2024

    The img is a drawing of a 3 piece or 4 piece option this could have many versions . the riveted construction would allow for add ons flats angles mount clips etc.
  6. Norm Langlois

    thinning down from 6061 to 2024

    I want to be clear about this. I am not looking to create the same spar , smaller . Or even invert this one. this has only two side webs. The bottom was left open for warping. I later had to add a web to remove the warp character, and its not the same material thickness. The wing in the picture...
  7. Norm Langlois

    thinning down from 6061 to 2024

    This wing works with the flying wire. I agree with inverting and adding to the spar as well. I want to make it only 6 inches deep . Also with only a single row of lightening holes . The hole would not be as much for lightening ,but for coining a pan into the web . Much like these holes but with...
  8. Norm Langlois

    thinning down from 6061 to 2024

    Maybe a few think its a stand alone spar. true mono. Its not and I should not have presented it that way . Before I finished up the original wing I was advised to put a torque control tube in at the TE some pictures show this short 2 inch tube . near the engine mount. Any wing construction would...
  9. Norm Langlois

    thinning down from 6061 to 2024

    As I said in the beginning here I intend to build a spar . how long it takes whether its not garage builder friendly is not important. The kit plane are very good , build one if you like. There are a few who would if they could build war plane look a likes .If I can find a way to build the...
  10. Norm Langlois

    thinning down from 6061 to 2024

    As I mentioned slightly .Long ago there was an individual that has engineering back ground told me The spar might actually be cantilever-able. if reversed. I have been aware of that potential along time.That was back in the threads of Oshkosh 365. Those are all lost. Another likely...
  11. Norm Langlois

    thinning down from 6061 to 2024

    VP1 I did say I should reverse the spar. I have lashed out as well. The problem here is those nay Sayers think they are correct, even, when there are others that are favorable . The balance is no one has the right to demean others because one won't bend to there will, Regardless. Your post...
  12. Norm Langlois

    thinning down from 6061 to 2024

    The books wont help my old brain . If I handed you a book to learn Chinese ,written in Chinese. and you have no translator will you get any where with the book? FOR ALL OF YOU I AM THROUGH FLYING, I am just exploring what I know how to do. No one is saving me from anything with negative...
  13. Norm Langlois

    thinning down from 6061 to 2024

    Bill if I understand you . Had I installed the 1X1 X1/16 sq tube all the way along the top of the spar it would have held up. On MY BUILD since I only went out 30 inches. I got the same result but at a greater load. If inverted with the pair on top ,that relates to more than .25 inches with my...
  14. Norm Langlois

    thinning down from 6061 to 2024

    Bill you know I have fought this battle for years. Since back in 2007. I was reluctant then to join the EAA forums before, I had something to present more than a concept. Even then I had the Dana's and Victors. Fortunately I had some actual help.
  15. Norm Langlois

    thinning down from 6061 to 2024

    The kolb Design is not a comparison to the concept presented here. its only an argument that the kolb is better than my plane as built. It also can not even have a chance to be used for cantilevered. If you have no love for the triangle concept that is your choice. Do you think its right to keep...
  16. Norm Langlois

    thinning down from 6061 to 2024

    I have been using geometry for solutions because I can . The tubing design serve the home builder. They have limits. I am just search out side the box where many can not go. I can. The aircraft engineers of this world have no interest in Ultralights there is no money in it for them. You know...
  17. Norm Langlois

    thinning down from 6061 to 2024

    Bill The concept drawing show layers and contour the capped side this reinforces the flanges by way of layers lighter ,not much different than adding a flat bar. This is why I say invert the spar and make the pair , in compression and the single in tension. and 2024 would serve tension side...
  18. Norm Langlois

    thinning down from 6061 to 2024

    Though Dana is correct about the reduced cable capacity at an angle. It is still greater than the 4 G load Stop with the BS I do not wish to defend MY AIRPLANE. No one has to fly it. I do not wish for anyone to accept it. The weakest point on the cable is the attachment to the spar top The...
  19. Norm Langlois

    thinning down from 6061 to 2024

    Dana I expect many people feel that way about flying UN-certified . They would not fly my plane ether. The flying wire changes how the wing is built and what from it also changes the Direction of the load. Out board of the wire the arm being shorter less shear load . Inboard of the wire no...
  20. Norm Langlois

    thinning down from 6061 to 2024

    In test No. 2, I had added in about 3 ft of 1X1 X 1/16th sq tube .Had I used a 10 ft or 12 ft. The result would have been much different. But weight was a big issue as building for UL always is.
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