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    Peter Sripol is at it again...

    For the reasons you listed having role models like Peter who are involved in DIY is extremely important, there is more to life than social media and video games . SpaceX, Rocket Lab, Blue Origin, Sierra Nevada, and many other companies are creating a new "Golden Age" of space flight, many...
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    Peter Sripol is at it again...

    I think those numbers are too optimistic, the kids in my neighborhood have absolutely no interest in wrenching or building projects of any type.
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    Peter Sripol is at it again...

    Just so we are completely clear Peter is only into building ultralights for the YouTube money and not for his initial stated reason.
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    Peter Sripol is at it again...

    I find disappointment in the poor performance of Peter's designs, all that work to build an ultralight to have it be abandoned, 0&4. Success to me would be an airworthy plane that would last many years, if it employs innovative construction or flying abilities all the better. Burt Rutan stated...
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    Peter Sripol is at it again...

    My question is; would you fly in one of Peter's planes?
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    Peter Sripol is at it again...

    I agree, Peter is not advancing the state of the art, he is producing content for his YouTube channel and a workshop of marginal aircraft. Nothing to see here.
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    Low and Slow......and quiet ?

    Steve Grossruck fabricated a "quiet" muffler system for a 250cc Zenoah made from two glass pack mufflers welded end to end around which he wound fiberglass insulation and contained it all with a wrap of galvanized steel flashing retained by several large hose clamps. The assembly was attached...
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    Legal question about copyright

    As I understand the Copyright Laws; you are allowed to build one of anything for "personal use". You however cannot sell copies or plans of a protected product or use the product for commercial purposes. If I were to build a replica of Mickey Mouse for my backyard it is not a problem. Using the...
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    Cascade Ultralights Kasperwing

    I like the simple design. I can see you are proposing to use a single large spar, possibly 250mm. Is the wing to be wire braced?
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    Cascade Ultralights Kasperwing

    Speedracer, Ralf Center, a veteran Dog Mtn. HG pilot pointed out the fallacy of hang gliding as being a engineless sport. He simply pointed to all the vehicles in the launch and LZ and said "your HG is powered by a V8".
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    Cascade Ultralights Kasperwing

    It appears the Kasperwing U/L mishap at Arlington Airfield was the unfortunate result of a rotor/downdraft that frequently occurs at the area. Most ultralight pilots have experienced the condition if they have flown the Arlington U/L pattern on more than one occasion. The rotor can be very...
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    Cascade Ultralights Kasperwing

    d Rick, Things have progressed a bit since you flew an A model Kasperwing. I found the Zenoah 250 anemic and replaced my single cylinder engine with a Xeonah electric start water cooled twin 440 (Zenoah was spelled with an "X" in the old days). Over the decades most pilots replaced the factory...
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    Paramotor engines in tractor configuration?

    Yes it will be more dificult to find than your in-house Home Depot stock of twin-wall polypropylene. Polycarbonate (Lexan) is really tough stuff, completely different than the softer polypropylene campaign signs. I might suggest buying a few pieces from Amazon and testing it, I expect that 4 or...
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    Paramotor engines in tractor configuration?

    This is a bit off the motor topic but I noted that you said you planned on using corrugated plastic sheet on your new ultralight project. There is a Russian builder that uses corrugated polycarbonate rather than the corrugated polypropylene, I believe the polycarbonate would be a far superior...
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    Cascade Ultralights Kasperwing

    Yes, https://kasperwing.com/contact/
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    Cascade Ultralights Kasperwing

    Please submit your Kasperwing information, photos and videos to the webpage.
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    Minimalist Glider

    I guess it would look like this; https://www.delta-club-82.com/bible/861-hang-glider-platz.htm
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    Minimalist Glider

    First off it shouldn't have a gap between the main wings, I also don't think too much of the hand held jib/canard arrangement. It would be a good project to construct a 1/4 scale R/C model to determine if it is an efficient flyer compared to other modern hang glider designs, my guess would be... no.
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    Minimalist Glider

    Hang gliders evolved away from loose sail to battens and airfoil shaped ribs for performance and safety. Back in the good old days of loose hang glider sails, pilots dreaded the "full luft dive", the first production models of the Weedhopper U/L also used an undefined sail, a shortcut that lead...
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    Cascade Ultralights Kasperwing

    Thanks for taking over the site.
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