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  1. D

    Lost ultralight.

    Yes! Thank you, its the MiniFox. The video of the one person assembly video is very impressive and should be the baseline for utility. Crowd sourcing saves my memory.
  2. D

    Lost ultralight.

    No it was not a kolb or other mainstream airplane. Very light weight. He carried a half span very comfortably.
  3. D

    Lost ultralight.

    I read so much here, sometimes I lose a thread and can’t find it. there was a video embedded in a thread, showing someone assemble a plane and then take off. He carried the wing panel out and attached it overhead at the root with two pins then lifted the wing and attached the two struts. Repeat...
  4. D

    Single-seat ultralight puddlejumper: the "Carbonmax"

    There was a thread recently regarding moldiness D-tubes. It mentioned Rol Klingberg and misrepresented his work. Rol has spent several years and successfully designed a method for flawless male mold D-tubes. He deserves a shout out and credit for his perseverance. I was appreciative enough to...
  5. D

    Single-seat ultralight puddlejumper: the "Carbonmax"

    Have we had any progress with the very promising Carbon Max?
  6. D

    Carbon Fiber Tube Fuselage

    My question is whether carbon tube trusses is another example of “black aluminum “ Is it more efficient to replicate a truss designed for steel. How does this compare to a carbon shell?
  7. D

    dihedral break in middle of center section

    Look at the Jodel range.
  8. D

    Purrpose of short struts

    Agree. Struts are as short as possible to avoid jury struts. their purpose is to stabilize a wing to a fuselage with just one point of connection at the cabane. I have failed to articulate my question properly. There are two ways to think of my arrangement. 1.) a cantilevered full span wing...
  9. D

    Purrpose of short struts

    The folding is possible but at this point, my intention is to create a wing with no openings or control cables/arms. The Junkers Flaps plug in automatically on assembly. Three connections to remove.
  10. D

    Purrpose of short struts

    This topic is of interest to me as well. My goal is is a lightweight easily detachable wing panel that can be then trailered. My wing is composite d-tube, single strut, with a drag spar from the rear root attach point to the strut attach point. My question is how to handle the loads at the...
  11. D

    Planform question....

    I'm surprised that the Verner is, 4 lbs lighter than a Casler and swings a huge prop. The prop disc is the key. I refuse to fly a two stroke and was always concerned that the 1/2 VW at 40 hp was minimal for the Mature Pilot. Watching Les Homan fly the Legal Eagle XL with the Verner has...
  12. D

    Planform question....

    I anticipated this question would show up early. The simple answer is aesthetics I am a heavy pilot and I want to float and alight softly. So my idea was to take whatever weight savings I could create with carbon and convert them to wing area. The double taper at the spar is going to make a 13...
  13. D

    Planform question....

    can you give examples of these airfoils?
  14. D

    Planform question....

    Thanks! I am suspecting that's what the Carbon Dragon designers did, when you look at the progression, root to tip, of the leading edge. Speaking of that airfoil, I have been curious about what appears to be a more sharp leading edge than many other popular choices. and, it seems to start low...
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    Single-seat ultralight puddlejumper: the "Carbonmax"

    I'm anxiously awaiting airfoil selection for the Carbon Max, and I notice that the aluminum form for the leading edge has a substantial crease as opposed to a small radius. Those of us forced to read tea leaves are wondering if this portents a Carbon Dragon type leading edge as opposed to the...
  16. D

    Planform question....

    Yes! The wings have no internal openings or controls. Torque rods to Junkers Flaps. Wings unbolt with three fittings and hang from the cabanes with two rope loops and rest on the elevator.
  17. D

    Planform question....

    I'm working on a part 103 design and have a question about a double taper planform, I'm using a high wing with a carbon D cell and drag spar supported by two points at the root and a single strut attached at the lower longeron and 30-40% of the halfspan. I would like to use a 20% Airfoil at the...
  18. D

    Flaps definitions in theory vs. reality

    I was trapped on vacation and found a copy of "British Warplanes......." in a bookstore in Winona MN. Therein, I saw a photo of a Fairy Barracuda with Fairy-Youngman Flaps. Who knew! They were hinged VERY low and one shot showed the plane diving with them deployed at 30 deg. NEGATIVE! Still...
  19. D

    Jodel Again

    Pincraze, do you have the Stan Hall references? Was that here or in Sport Aviation, or where? Dan, that is a very nice airplane in your avatar. Have you given any thought to a composite Jodel spar? Going back to the Engineering Library, with Jones under my arm.
  20. D

    Jodel Again

    Just skimmed Jones. 1. Much discussion regarding individual lamina, very little on complex structures. 2. Scary sentence at the end of the book that basically said, "The interactions between components is so complex, no competent composite engineer would release a structure without testing to...
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