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  1. trifoils

    Rutan Quickie / Q200, Q1, Q2

    I think it would fly fine without the concave lower fuselage that creates the double curve. Dragonfly fuselages have very little of that curve (if any) and are very fast. Amsoil racer was similar. Have you considered just taking a Dragonfly MK2 and reducing the fuselage width?.
  2. trifoils

    STOL Baby Ace

    You're right about the forward slip. Caught this one in the act, but it was straightened out by the time I got the pic
  3. trifoils

    Celera 500L (was: More Vaporware)

    That's it. The entire front fuselage would slide off, exposing the framework that supported the pilot. Unfortunately the builder did not include a roll bar.
  4. trifoils

    STOL Baby Ace

    I agree it's already more STOL capable than most, but you could easily improve it by just lengthening the wing back to cub proportions. Greatest Stol performance I've ever seen from a "normal" airplane was a restored Tcraft with a 100lb. pilot. All that wing got it in the air in under 300 feet.
  5. trifoils

    Celera 500L (was: More Vaporware)

    There was a single place aircraft by the name of Vmax Probe, designed for a speed record, featured in the book Personal Aircraft Drag Reduction. It looked basically the same with NACA scoop(s) for engine cooling, which did not work adequately for the 100hp two stroke, according to the article...
  6. trifoils

    Project roll call

    More ultralights than I can possibly maintain, the Dragonfly mutant still on the back burner, a hoop tent worthy of plant 42, and a giant pasture....
  7. trifoils

    World's Largest Aircraft (Stratolaunch) Flies for the First Time

    That's nothing. You should see the skyjack they need reach the flight controls for annual....
  8. trifoils

    Quicksilver GT400

    I knew a guy who flew one and he loved it. It's one of the enduring successful designs from the ultralight craze, like the quicksilvers, kolbs, challengers, basically every Rans, etc. A little slower than some in this class (55-60mph cruise with rotax 503) and the yoke is a big turnoff for...
  9. trifoils

    Budget built MiniMax 1100 Ultralight

    Not sure if it's been mentioned yet, but I don't think multitasking works well with physical tasks. What you finish is far more important than what you start. If you choose small milestones to reach before starting something else, the completion of them will add wind to your sails. Nothing...
  10. trifoils

    Come hell or high water I'm building this plane

    I'm sure many of us can relate.
  11. trifoils

    How many of you guys fly RC Planes too?

    Finished a day of greenhouse building with a slow flight in the Kadet Sr. The lift on this thing is amazing. Whole flight was at a fast idle.
  12. trifoils

    ShelterLogic Temporary Hanger (Pictures)

    Some farmers cover their hoop structures with metal if the tarp decays and I've considered it, but for now I will probably use metal sides with a tarp top, to let in light but keep out the rabbits. They will eat cacti out here if they're hungry enough so tender plants need a good barrier. The...
  13. trifoils

    ShelterLogic Temporary Hanger (Pictures)

    Thanks, but I'm not in the air (my r/c models are, occasionally). Local pilots have seemed to notice the site and I've had a few visitors. Today it was a spotless RV8 in invasion stripes who buzzed the field and did a victory roll on the way back to town. It's amazing what you can get away...
  14. trifoils

    ShelterLogic Temporary Hanger (Pictures)

    I set up a couple of the 10x15 hoop tents last year and they work great if you use the screw anchors, but will blow away in the wind without them (one met this fate early in its life). The tarp is a little thin but has lasted a year so far, aside from crow damage (which can be repaired -...
  15. trifoils

    Dragonfly MK-II 3 airfoil conversion

    Plane is now tied down safely at the farm. If anyone knows Patrick Panzera can you please ask him to deliver my bill of sale or written affidavit stating I purchased it from him, to whom it was donated by the original builder? If Mr. Panzera does not provide this, the aircraft will be a...
  16. trifoils

    Establishing fwd and aft cg limits?

    Speaking only on experience with RC models and ultralights, the forward CG limit sets the minimum speed when you can still flare for landing. Get it too far forward and it will smash into the runway when you try to flare. The aft CG is based on the wing's center of lift and must never go...
  17. trifoils

    Dragonfly MK-II 3 airfoil conversion

    Some signs of hope from the seller (thanks to the HBA member who contacted him privately). Says the paperwork is received from the builder and just needs to find time to file it with the FAA. My fingers are crossed. This airframe deserves to be tested in flight. Adding a stabilizer to a...
  18. trifoils

    World's Fastest Harmon Rocket

    I hope they know the confetti speed of that airframe.
  19. trifoils

    Dragonfly MK-II 3 airfoil conversion

    Update, still no transfer of ownership from the seller and I'm about done waiting for him. He's a nice guy and a somewhat well known publisher of an experimental aviation engine conversion magazine, who had a lot of dragonfly involvement decades ago. This is why the builder donated the plane...
  20. trifoils

    Statically Indeterminate?

    That whole mount is statically indeterminate. Any welded joint has a heat affected zone unless the entire piece is annealed and retreated after fabrication. Unless you know the preloads generated during cooling of each joint and the loss of yield strength this whole exercise is theoretical...
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