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Type: Posts; User: Gordon Misch

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    A bit of crud under the oil pressure relief ball?

    A bit of crud under the oil pressure relief ball?
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    Well, a couple things here. First, I won't...

    Well, a couple things here.

    First, I won't pretend to offer a valid analysis in a crash situation. Who can predict just what the geometry and energy of an impact will be?

    Second, Yes Dave...
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    Pete, Supercub MD is correct. Buckling theory...

    Pete, Supercub MD is correct. Buckling theory is all about exploiting offsets from straight. Here's more than you'd ever want to know about that! ...
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    I hear that kegs are pretty tough, if bundled...

    I hear that kegs are pretty tough, if bundled together - - -
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    Me too re PC, however civility and...

    Me too re PC, however civility and appropriateness to this site's declared purpose are crucial to its success.

    While I sorta understand removing entire threads - kinda like the whole class...
  6. Thread: X-Brace

    by Gordon Misch
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    For "slender" columns, that is correct. See...

    For "slender" columns, that is correct. See "Slenderness Ratio" about halfway down in this page. https://www.engineeringtoolbox.com/euler-column-formula-d_1813.html
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    Nothing sez you can't be out in your boat. Just...

    Nothing sez you can't be out in your boat. Just no poaching. :lol:
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    I was wondering the same thing. But then got...

    I was wondering the same thing. But then got to thinking that the carb bowl is vented to the air inside the cowl, and the balance between that ambient pressure and the pressure from the fuel in...
  9. Do I know him?

    Do I know him?
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    "BLEVE" Boiling Liquid Expanding Vapor...

    "BLEVE" Boiling Liquid Expanding Vapor Explosion.
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    Wind against a leaky check valve???

    Wind against a leaky check valve???
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    Fill it with water first. Easy and zero danger!

    Fill it with water first. Easy and zero danger!
  13. Could you please explain this? I was thinking...

    Could you please explain this? I was thinking that the starter motor would be acting as a too-fast generator, creating a reverse EMF on the system.
  14. What I was guessing, but you said it better.

    What I was guessing, but you said it better.
  15. Just guessing - Bad breaker, that opens when...

    Just guessing - Bad breaker, that opens when it shouldn't but doesn't pop - dunno if that's possible. Voltage taken from "upstream" of the breaker, and amps showing flow from battery to loads....
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    Perfect. Thanks, Mike. Nice, Steve! I can...

    Perfect. Thanks, Mike.

    Nice, Steve! I can do that too. Once out of 500 landings. . . .
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    Ugh! That's the whole five hours! I watched...

    Ugh! That's the whole five hours! I watched quite a bit of it, but missed Mr. Pierce's part.
  18. Stewart is asking a good question. The tail...

    Stewart is asking a good question. The tail geometry is engineered to be effective in balancing the maximum CG MOMENTS. At max moments it must be still lifting downward, otherwise the aircraft is...
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    I missed SP's performance. Anybody got a link...

    I missed SP's performance. Anybody got a link to it?
  20. The weigh points are simply where they are, and...

    The weigh points are simply where they are, and only matter for summing the measured weight moments about the datum. What ultimately matters is the CG location in reference to the defined datum. ...
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    Just square up the wing, mark the tab from the...

    Just square up the wing, mark the tab from the previously drilled tube, disassemble and drill the tab like you mentioned earlier. One simple way to mark the hole in the tab is with a little shot...
  22. Firewall vertical = level, per Piper service...

    Firewall vertical = level, per Piper service bulletin. Don't have the bulletin number handy, but can go find it, if desired. They call it "alternative leveling means". Or maybe it's an FAA...
  23. Wireweinie has it right on all counts. Level...

    Wireweinie has it right on all counts. Level the plane, weigh at known locations from the chosen datum (measured horizontally), compute moments, add 'em up, divide by total weight, done.
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    For sure! WOW

    For sure! WOW
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    Love that line!

    Love that line!
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