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Torsten Spitzner

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Everything posted by Torsten Spitzner

  1. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  2. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  3. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  4. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  5. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  6. Torsten Spitzner
    The harness risers were made from wide shoe laces and small rings sewn on using waxed dental floss. The test chute was packed and put into the container. Of course, I had to learn how to pack a round parachute as well...
  7. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  8. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  9. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  10. Torsten Spitzner
    Google to the rescue and I found a method to divide a circle into 14 equal parts, adding some for the overlaps. A card template was made and the gores cut to size I used the grouting lines on my tiled floor as straight edges The gores are laid out and taped together. There needs to be an overlap at each join, which creates a pocket, or sleeve, through which the lines are threaded. The lines are pulled through the gores. One line goes right through from one side, through the top and is the same line on the opposite side. The lines are knotted at the top, where the pilot chute will be attached later. The first test parachute is ready for testing.
  11. Torsten Spitzner
    In the meantime, I was also making a test parachute. This was simply made from refuse bags which were taped together. Regular string was used for the lines, a weight attached and taken for a test from from a suitable plane. This demonstrated that the concept was good and work on the model continued. The first problem was that the pattern for the gores (parachute panels) did not work out correctly.
  12. Torsten Spitzner
    The following series of pictures will hopefully explain the procedure. This whole design is over complex imo. When the pin is pulled, the elastIc bands are supposed to pull the two container sides open. I found this to not work reliably. Important to note also, is that the container size was hopelessly too small as per plan. The first test parachute would fit but subsequent ones, made from thicker material, would not.
  13. Torsten Spitzner
    The backing plate was cut from 2 or 3mm ply and some ply reinforcing was glued to the sides as the hooks and rings would be attached to these. I used contact adhesive here. Edited By Torsten Spitzner on 08/09/2020 08:26:07
  14. Torsten Spitzner
    The 'take a snapshot' function is most useful, I use it regularly to print small parts of plans. Small hooks and rings were made up from piano wire and the container cut as per plan from suitable material.
  15. Torsten Spitzner
    The next series of pictures relate to the container construction. ( the container holds the parachute), as per plan. Ultimately, I abandoned this entire method and made something much simpler. I couldn't get the designed container to open reliably. So I'll post the original idea just for continuity.   Edited By Torsten Spitzner on 07/09/2020 12:52:50 Edited By Torsten Spitzner on 07/09/2020 13:01:14
  16. Torsten Spitzner
    The next picture should show what I am doing. The leg support/attachment is balsa with ply doublers on the outside. The hole drilled through the centre then gets a piece of brass tube epoxied into it. This is for the piano wire axle which are epoxied into the two legs.
  17. Torsten Spitzner
    The leg mounting doublers were drilled for the shaft. the legs need to be able to swivel, or rotate forward. During freefall, a skydiver needs to be in a 'stable' position, called an 'arch'. When this little skydivers parachute is deployed, the legs need to rotate forward a little, into a more vertical position.
  18. Torsten Spitzner
    Okay, looking at that last picture, both top and bottom 'torso' pieces were ply, with the sides being balsa. The the ply leg mounting doublers were made
  19. Torsten Spitzner
    Some balsa triangle in the corners.. Hardwood strips was glued into the top 'torso' corners. The harness mounting would later be screwed/attached into these.
  20. Torsten Spitzner
    As I recall, the 'torso' is made from balsa. I used ply for the top part (where the head attaches onto). I remember telling myself at the time, that I should have made the entire torso from 3mm ply. But so far he has held up to the parachute opening forces.
  21. Torsten Spitzner
    I started by making the 'torso" of the jumper. essentially this is just a box which will contain the radio gear.
  22. Torsten Spitzner
    The first thing to do was to print the plan full size. I printed in tiled format at home and taped the pages together.. Then got things ready..
  23. Torsten Spitzner
    I have been asked to share the details of this little jumper, so I shall give it a go...... There is not much detailed info on the net, not that I could find in any case. The plans for this jumper are on Outerzone but I found the original build article to be somewhat unclear in places and some changes and figuring out were necessary. Nothing new there... I really enjoyed making this model since it was something completely different and Jumper Mk2 is planned, with the cardboard templates already made.
  24. Torsten Spitzner

    Torsten Spitzner posted a gallery image in Member Albums

  25. Torsten Spitzner
    Posted by Torsten Spitzner on 09/02/2020 11:27:24: Here's my latest model. He is yet to maiden, just waiting for less windy days since I made a simple (well, not that simple to make..), round parachute. The little man has finally maidened. He has 5 skydives logged and I am quite pleased with the 'model'
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