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  1. J

    technical details of 51%

    Here's something that's been bothering me. The "major portion" / 51% rule has certainly been discussed a great deal in aviation circles, but I still don't know, how far can you push the rules. Tools are what I'm thinking of now. Say you need a custom tool to build an aircraft. I think Zenith...
  2. J

    How To Learn Aircraft Engines?

    I'm an auto mechanic, and I'd like to learn more about aviation engines. There's a local engine rebuilder I'd like to work for someday, but I think I'd have a much better shot if I knew more details of these engines. So, the question is, are there some good books, websites, etc that you know...
  3. J

    Anyone using BRL-CAD?

    I was looking for a cad package that runs under Linux and the only really appealing one that fit my ($0) budget was BRL-CAD. It's a fully featured CSG (constructive solid geometry) CAD package designed by the U.S. Army Ballistics Research Lab (as it was then called). I downloaded and built it...
  4. J

    The "why" about VORs

    Why is it, that VORs are set up the way they are? I'm not (yet) a pilot far less instrument rated, so I don't really understand it all that well (not having seen one working "in the flesh"), but it seems wierd to me. As I understand it, you set the angle from the station to you that you want to...
  5. J

    EFIS For Homebuilt / Experimental Aircraft.

    I love the look and functionality of a 8 inch or so screen displaying navigation and engine information. Advanced Flight systems has a setup like that listed for several thousand dollars, but then you have to upgrade it with sensors, etc. There are some others also, from Garmin down (price...
  6. J

    Might actually do it.

    I've been on the forum for quite a while now, mainly reading, trying to be give what limited insight I have, and just chipping in when "I can't keep my darned mouth shut." Now I'm thinking that I'll possibly, just maybe, actually get started on my childhood dream and build an airplane. Anyway...
  7. J

    Looking for video proof - somewhat frivolous topic

    I'm in a bit of a bind here :D, and you folks were the ones that came to mind. My girlfriend and I were talking, and somehow we ended up betting about whether an airplane can do a "cartwheel." I accepted the bet because we came up with a definition that let a flat spin qualify - now there are...
  8. J

    Design selection criteria - Is this new / useful?

    I know everything below has been presented here before, but I don't think it's ever been put together like this - if it has I guess I just wasted my time. I wanted to crystallize in my own mind some of the aspects to picking a design, so I typed up a bit of notes, I'd like to hear...
  9. J

    What's so different about certified engines?

    If you take a previously certified engine, and use it on a amateur-built (that seems to be that Transport Canada calls our 'Experimental') aircraft, it no longer has to maintain certification, correct? So at that point it has the same status as any engine you might bung in there, with the result...
  10. J

    TC for redrive?

    Has anyone considered using a torque converter in their auto-conversion set up? I know they are not all that efficient, but they seem to have some strong points. One could either use it to transfer power into a conventional gear/chain/belt reduction system, or, using a specialty TC, use the...
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