Recent content by Topaz

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  1. Topaz

    Concepts only: Doodles without numbers

    Wow! It's actually not that far off! 😊
  2. Topaz

    Missing airframe parts, legal to fly?

    Asking a bunch of people you've never met on an internet forum isn't the way to go about this. Contact an attorney or contact the FAA. Nothing anyone here can tell you is worth more than the price you're paying for it. Moderator Note: Thread closed. Contact me via PM if you have questions.
  3. Topaz

    Basic Configuration for a "Safe" airplane

    Now you've done it. Let the holy wars begin! (We've discussed this once or thrice, ad nauseum.)
  4. Topaz

    Trailer Design - Resources?

    Thanks! Added to my notebook.
  5. Topaz

    New glider design

    And that's what this is all about. 🍻
  6. Topaz

    The propellers plane of damage ?

    I can attest that a quarter-ounce Japanese beetle has a similar effect when striking the center of your motorcycle-helmet faceplate at ~120mph. :oops:
  7. Topaz

    Trailer Design - Resources?

    Before we get too far off into the weeds on air suspensions, is there really one you can buy "off the shelf" for a trailer in the 1,200-2,000lb load range, for a comparable price to the leaf-spring and rubber-puck suspensions? Can someone point me at that? If there isn't, then we're getting off...
  8. Topaz

    New glider design

    It's also an option for situations like my own, where you have a touring motorglider that compromises absolute drag reduction for more practicality in powered cruising mode. (Not everyone can own a Stemme 😉) Offsetting the extra cooling drag with a slight bit of thrust brings performance up to...
  9. Topaz

    New glider design

    Funny you should mention that... ;) I've been thinking very much along the same lines, since the maximum component length in my build space is ~14.5'.
  10. Topaz

    New glider design

    Any notion of a "sweet spot" or "ideal" span is going to be entirely subjective, and depend entirely on what kind of soaring the pilot wants to do. 18m certainly isn't anywhere near optimum for paragliders or hang-gliders, for example. Nor for trainers, nor for micro-lift gliders. I personally...
  11. Topaz

    New glider design

    That's the exact same argument that was used for 15m ships 30 years ago as being the only "serious" soaring and the same one will be used for the 23m ships fifteen years from now, when anyone flying 18m gliders will be "just throwing away performance." In your case, since what you describe is...
  12. Topaz

    Trailer Design - Resources?

    My work here is accomplished!
  13. Topaz

    Trailer Design - Resources?

    Thanks for the suggestion. That looks really nice. I'll have to see what range of loads they have those in. There's nothing magical about 2,000 lbs here, even though that's the number that's been bandied about here for example. In point of fact, with a ~450lb. payload of airplane and spare...
  14. Topaz

    Trailer Design - Resources?

    Thanks, Murry! I'll take you up on that. E-mail or call me and we can touch base on both that and next-steps for ESA after the workshop. I'd love to. But the guys with the glass don't like to fly out of Skylark very often because of the dirt runways, and Hemet, Crystal, and Warner Springs are...
  15. Topaz

    Trailer Design - Resources?

    Wow! That's quite the ingenious rig! I love the pivoting crane to sling the fuselage onto the wings. Very clever. Oh, and nice airplane, too! 😊
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