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Type: Posts; User: Dana

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    A 2 seater is not an ultralight (at least in the...

    A 2 seater is not an ultralight (at least in the US). You will need at least a Sport Pilot certificate with a seaplane endorsement, or a Private Pilot certificate with ASES (airplane single engine...
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    Looks homemade. Could be from a hovercraft or...

    Looks homemade. Could be from a hovercraft or airboat.
  3. Not a P-51, is a typical R/C pattern (stunt)...

    Not a P-51, is a typical R/C pattern (stunt) plane of the early 1970s. Not sure which one, there were hundreds of designs back then... it looks a little like a Sterling Lancer but the rudder shape...
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    Whatever it is, it's beautiful.

    Whatever it is, it's beautiful.
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    Frank, look for a free program called AF5Rename,...

    Frank, look for a free program called AF5Rename, it can do all kinds of mass renaming.
  6. Thread: Real Pilots?

    by Dana
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    Two words: "paragraph breaks."

    Two words: "paragraph breaks."
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    Most airplanes have at least some dihedral. The...

    Most airplanes have at least some dihedral. The airfoil used has nothing to do with it.
  8. Ditto.

    Ditto.
  9. Thread: homebuilt design

    by Dana
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    Pazmany's Light Airplane Design. Bruhn's...

    Pazmany's Light Airplane Design. Bruhn's Analysis and Design of Flight Vehicle Structures. Peery's Aircraft Structures.
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    What Ron said, with one caveat: If your special...

    What Ron said, with one caveat: If your special issuance requires anything on your part, like participation in a HIMS program, you have to keep that up until the medical expires. If you don't, and...
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    I don't know what equation you're using, but for...

    I don't know what equation you're using, but for a given vertical speed a longer shock stroke absorbs the energy over a greater distance, so the load is less.
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    Everybody worries about liability, but my...

    Everybody worries about liability, but my understanding is that there has never been a successful suit over a used homebuilt airplane. Put it on Barnstormers, the old 'dacs still have a following. ...
  13. Thread: Open Source Plans

    by Dana
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    A new design that "looks very similar" is one...

    A new design that "looks very similar" is one thing, a copy with identical structure (or with very minor changes) is another. If your copy would make it possible for somebody to build a new plane...
  14. Thread: Open Source Plans

    by Dana
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    Not a lawyer, but I'd think that without...

    Not a lawyer, but I'd think that without permission from the copyright holder you'd be in violation of copyright law. Serial number has nothing to do with it a builder (from legitimate plans) can...
  15. Thread: Do You Look Up?

    by Dana
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    Doesn't everybody?

    Doesn't everybody?
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    "Waldo Pepper" is my favorite, it doesn't hurt...

    "Waldo Pepper" is my favorite, it doesn't hurt that Dad took me to see it when I was a teenager, after reading all about the production in Flying magazine and waiting what seemed like forever for it...
  17. Hey Bill, do you ever miss Cadkey where you could...

    Hey Bill, do you ever miss Cadkey where you could model anything explicitly, without creating a separate file and sketch for every single component? No constraints... :P
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    I have a "G-8" leather flight jacket which I like...

    I have a "G-8" leather flight jacket which I like regardless of the maker's claims of military origin almost certainly being false. It (with obligatory silk scarf) is still functional in the open...
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    What every forum software needs is this (this one...

    What every forum software needs is this (this one is from POA), which automatically shows up on any old thread just above the reply box:
  20. Thread: Need help

    by Dana
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    If the plane has a LH prop (top of prop moves to...

    If the plane has a LH prop (top of prop moves to the left when viewed from behind), then it will need left rudder, not right.
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    If the bender can bend 1/4" mild steel it can...

    If the bender can bend 1/4" mild steel it can certainly bend 1/8" 4130... but you'll still want to stress relieve it afterward.

    You can also clamp the form in the vise and hold the workpiece in...
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    Heat it. It's super easy to bend when red hot. ...

    Heat it. It's super easy to bend when red hot. Clamp one side in a vise with a suitable radius form to bend it around, heat the bend zone with a torch, and tap it around with a hammer. Then heat...
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    I put two in my Hatz, one is a dual USB power...

    I put two in my Hatz, one is a dual USB power with a voltmeter and the other is a plain cigarette socket that I can plug anything into. Oddly, one of the USB others causes my intercom to break...
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    I would suggest a cigarette lighter socket and an...

    I would suggest a cigarette lighter socket and an adapter in that, that way it's easier to replace if it craps out or you need to upgrade to the latest greatest fast charging standard.
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    What Larry said, backpacking gear is going to be...

    What Larry said, backpacking gear is going to be lighter and better quality. I don't use a tent; instead I use a bivy sack (a gore-tex sleeping bag cover) and sleep under the wing. But if I was...
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