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    Icarus Spain X-Fire
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    Precision Aerodynamics Raven
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    Cypres 2

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    Skydive Feniks, Belgrade, Serbia
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  1. The major characteristic of the schuemann planform is elliptical leading edge and a straight trailing edge. If you look at Leia, Petra or Valkyrie for example, as well as many paragliders, you'll notice those. It provides higher lift at lower speeds (so it also stalls later). Powerband is something else: Edit: Planform is outline of the wing projected onto horizontal plane. This is a photo of a Valkyrie:
  2. As far as I can see, neither crossfire 3 or safire 3 are schuemann planform. X-Fire by Icarus World is, Echo by FluidWings looks like it, not sure if there are any other non-crossbraced with schuemann.
  3. I don't like that he didn't say the size of the wing or the WL, he only said it was "lightly loaded" (which could mean anything from 1.0 to 1.5 I guess). When he said the fronts were heavy, not sure if he meant compared to Sabre 2 on the same WL or heavy in general. Edit: In the comments he said it was 170ft at 1.2 WL.
  4. I was under impression that once the "trap" catches the bridle and pulls on it, because it's not slippery, it wouldn't release as easily even when it lost some of the tension (never seen it in person, maybe if you or anyone else who's seen/installed it could confirm this)? And if the main and the PC diverge in terms of position/angle, it will keep squeezing the bridle. Other MARDs as I understand them are much more sensitive to relative angle rather than force.
  5. Aside from this one, the only "mechanical MARD" (as they call it) that doesn't allow for release once it begins extraction with the main, that I know of, is Mirage's Trap. Are there any others on the market?
  6. Something like this? (red being the cross connecting lanyard, blue being the reserve rip cord)? If so, this would mean that if one riser releases, it will stay connected to the other one before deploying the reserve? (Not sure if I understood you correctly, but it fits their "release RSL on one side before cutaway" requirement).
  7. Thanks for that, I was sure those two were the same thing. Any chance you could explain the difference in words or a picture (not sure if I'd be hogging the thread but I guess there might be others confusing these two)?
  8. I recommend you watch these two videos (the second one especially on how even the one unaltered after the manufacturer might not be marked properly). It does address some of the problems you might be having. Any chance you could post a photo of what you're describing?
  9. Yeah, what could possibly go wrong with this design? Edit: This not the same as LOR system, see below for details.
  10. As far I understand (of course, possibly wrong) collin's lanyard is symmetric (one riser [one with rsl] releases the other one, but not the other way around). When you say dual collin's lanyard you mean two lanyards so both riser release the other riser on separation? Is this something that's used in any rigs? Curious if it's already "a thing" as I've never heard of it.
  11. I have a jumpsuit with zippers that's more appropriate for a jump. However, I've considered this as a simple hop 'n' pop jump without a freefall and the only thing I've left in my pockets was the pull-up cord which couldn't really cause any damage if it fell out (or so I thought).
  12. One of the most ridiculous things happened to me today (even though it's completely my fault, I find it very very very improbable set of coincidences). I jumped hop 'n' pop from 1200m and didn't bother to put on my jumpsuit and went with shorts and shirt instead. After packing the canopy, I put my pull-up cord in the pocket (no zipper or anything). Upon jumping and deploying, the cord slipped from the pocket, went up into the canopy at some point during the snivel, passed through the slider grommet and locked the slider up. I managed to get it down somewhere a bit above 700m. I've had my hard deck set for ~650m (the decision to cutaway). There was a lot of thermics and the canopy seemed too unstable to be safely landable. I've always looked at "don't jump with stuff in your pockets" as "you can drop that stuff and lose it + it could kill someone below. Never considered it could also go up. The takeway: don't jump with wih stuff in your pockets (that could slip out).
  13. Add another pair of 3-rings to "extend" the riser on demand. If one breaks it will extend the other one as well. Obviously this would all be a lot smaller and shorter and protected by a cover which also limits the distance between the risers.
  14. As far as I've managed to follow, 7 and 8 have the exact same sensor. The major difference is, yet again, more RAM and with that better stabilization (and the obvious physical design/appearance differences you've mentioned). I'd say "better video quality" comes from GoPro's fancy colormaps which amplify color saturation to make videos look more vivid. You could always do this manually during editing, probably do even better job. Stabilization on 7 is already very good in my opinion. You can find many comparison videos on YT to actually see the difference in image and stabilization.
  15. @Maddingo First, a disclaimer, I have ~250 jumps so nowhere near competent to provide any strong opinions. However, I have had a coach for proximity flying and have been flying along those lines with two of my friends (so the 3 of us in flock), so I'll share some of the things we were taught and found useful, but take it all with a bit of salt :) Revise your EPs including wraps and entanglements (e.g. Both of you keep a knife or two or more on you (as the joke says, the second one is for you to use after you drop your first one :)). Depending on the size of the plane and the DZ, make sure to plan accordingly with other people as you'll most likely be hogging the airspace a bit longer than the others. The three of us jump hop n pops with 3 seconds of separation. We started with 5 seconds until we got used to it. So all of us deploy right away, but we make some slight horizontal separation. Depending on the plane (we jump mostly from C-182), it can be useful that the next person is basically already outside of the plane with their feet out at least when the first one jumps (to save time). When your canopy deploys, hold the rears and be ready to avoid any unintentional docking :) As you have some stuff to do before the flying starts (disconnect RSL, loosen the chest strap, pull down the slider, whatever you do) first turn 90 degrees from the flight direction for safety and then do all that stuff. Decide with your partner that you both turn the same direction (both 90 left, or both 90 right). This will save you time later as you'll be closer to each other once you're both ready. We usually do one of the two formations, either stack (2nd flying a bit above and behind the 1st, the 3rd flying a bit above and behind the 2nd) or side-by-side (the 1st in the center, 2nd on one side of the 1st, 3rd on the other side of the 1st). The leader (1st) always announces the intent with their legs (if they're going to turn left or right) and executes a second or two afterwards so that everyone can coordinate properly. In the stack, watch out for the turbulence of the canopy in front of you (the turbulence on the sides seems to be much stronger and will push you out of the formation). In side-by-side, if you get very close, the close parts of the canopies will slow down and will begin to turn the canopies into each other. So if you're getting significantly close, be sure to watch out for this. Fly slightly braked (toggles around neck/ears). If you're both flying in full speed, the faster one (or the one in front) can slow down, but the one behind cannot speed up. If you cannot catch up to the one in front of you, cutting the corners during turns can help. This is why announcing turns is important. Discuss leg signals for announcing turns, as well as "slow down"/"speed up" and "separate". What we found really useful is bluetooth communicators. We use Lexin LX-B4FM. It lets you try a bit of more stuff and still stay safe, as you can announce the intent or problems more clearly. Watch out for other traffic and for each other. If you're using communicators, we found it useful to announce the altitude from time to time. We usually fly the formation down to the landing, trying to all land in a line at the same time. Swap positions (we usually keep the same ones in a single day) so you don't get used to and overfit to a single position. It's useful that one person does nothing (just flies mostly straight), and the other one tries out different things to see how it affects their flight (front risers, rear risers, toggles, sashay...). I hope you find all of this at least somewhat useful. And again, please take this with a bit of salt and ideally discuss with someone more experienced :) P. S. Sorry I forgot to address some of the specific questions you had. 0.2 WL difference isn't significant if they're same/similar canopy model (you can fly with that, I did). A katana will dive deeper than a safire so you'll have significantly different paths even on the same WL. As for the turn you described, I didn't fully understand it. What we usually do is fly a pattern (like large rectangles) while we're up. The leader plans for those and decides when we turn. After you get a bit used to flying proximity, you can try adding different things like swapping positions in air for example.