Recent content by proppastie

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  1. proppastie

    LVL verses plywood

    I seem to remember the cautions of non aircraft plywood such as voids, and knots.....some talk above about might be one lamination bad and not really that bad, but might there be more than one bad lamination?...Is the fact that these are very thin laminations mean that perhaps there are less...
  2. proppastie

    Tubular boom from sheet?

    Boku posted the tail boom for one of the HP gliders, it was sheet metal.
  3. proppastie

    Flight Club - Ultralight Build Log

    Just remember the camel was a horse designed by committee.....I would not use flexible hinge, wire ties, or leather straps for anything structural (like control surface hinges)....If you look at Glider Criteria the chart on tail loading you will see the larger the tail the larger the proof limit...
  4. proppastie

    Single-seat ultralight puddlejumper: the "Carbonmax"

    seems to me I had to have external contour boards on my leading edge near each rib station.
  5. proppastie

    Tubular boom from sheet?

    Why?
  6. proppastie

    Flight Club - Ultralight Build Log

    Frati "The Glider" and Glider Criteria.....I used Glider Criteria for tail feathers, boom, control surfaces, spoiler....Frati for wing loading......simple platform area method...
  7. proppastie

    Flight Club - Ultralight Build Log

    That can be made from a section of 4130 tube with a tab welded to it. Welding thinwall tubing is a great skill to know....look at the beautiful welds of Little Scrapper if you want to see art.
  8. proppastie

    Flight Club - Ultralight Build Log

    Glider Criteria has scheme for load testing ribs....but that alone will not ensure the safety of the wing. To make prototypes of the, tail feathers, wing, landing gear, fuselage etc means essentially just building it and then load testing it, which if you have not calculations could be a...
  9. proppastie

    another Autoflight gearbox failure - this time after 34 hrs

    off .015 .....is there that much slack between meshing gears?....could be BS to deflect blame for other design/fabrication/assembly flaws.......Does New Zealand advertise this gearbox for this engine?
  10. proppastie

    another Autoflight gearbox failure - this time after 34 hrs

    when it is all over would be a good story I bet. ....
  11. proppastie

    another Autoflight gearbox failure - this time after 34 hrs

    It usually is not this hard. As was said at least you did not get hurt physically.
  12. proppastie

    Push-Pull control tube fabrication

    https://www.aircraftspruce.com/catalog/appages/an490.php not the number you are looking for but the same function...did not find the female in those size.....but did not look very far.....I have a lathe so have been turning my own.
  13. proppastie

    Flight Plan Requirements

    off topic, but where I am everybody loves to be playing/looking at the "fish finder",.... really a big distraction because it is hard to see anyone out the window unless they are less than a mile. But now when you are in haze or clouds it is handy. I would much rather have it than endless...
  14. proppastie

    Flight Plan Requirements

    Friend was flying somewhere in Africa....said there was maybe 200 airplanes in the whole country and they had ADSB but still required position reports. They also would complain if he was off altitude more than 100 ft.
  15. proppastie

    Flight Plan Requirements

    I was sort of interested in other countries than USA.....pretty much know what is required in NJ. NY, KPHL.
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